In the space at the left, write the letter of the pair of words related to each other in the same way as the capitalized pair. Kendall, Florence Peterson, McCreary, Elizabeth Kendall, and Provance, Patricia Geise. antagonist: gluteal muscles, adductor muscles, tensor fascia latae, synergist: adductor muscles, gracilis Synergist: Trapezius, Action: prime mover of inspiration This paired muscle is fan-like in shape and covers the upper lateral side of either buttock. O pectoralis major O latissimus dorsi O deltoid O biceps brachii, Protrusion-Retrusion involves the movements of which muscle? The world divides(7)\overset{\text{(7)}}{{\underline{\text{divides}}}}divides(7) into 242424 time zones so that the sun is high in the sky at noon almost everywhere on earth. a. platysma b. occipitalis c. sternohyoid d. mylohyoid. Synergist: Sternohyoid Antagonist: Sternothyroid . [7], The sternocleidomastoid is within the investing fascia of the neck, along with the trapezius muscle, with which it shares its nerve supply (the accessory nerve). Synergist: adductor longus, Action: adducts, flexes and medially rotates thigh a) Long head of biceps brachii b) Pectoralis minor c) Coracobrachialis d) Short head of biceps brachii. (a) Deltoid (b) Flexor digitorum superficialis (c) Biceps brachii (d) Teres major. Synergist: Platysma, Action: Flexes neck forward when together [2] It protects the vertical neurovascular bundle of neck, branches of cervical plexus, deep cervical lymph nodes and soft tissues of neck from damage [2 . It is thick and thus serves as a primary landmark of the neck, as it divides the neck into anterior and posterior cervical triangles (in front and behind the muscle, respectively) which helps define the location of structures, such as the lymph nodes for the head and neck.[8]. A. abductor pollicis brevis B. flexor pollicis longus C. medial heads of flexor digitorum profundus D. superficial head of flexor pollicis brevis E. pronator quadratus, Which of the following muscles are innervated by the trigeminal nerve? L. languish Antagonist: deltoid Which of the following muscles is most active during flexion of the arm/glenohumeral joint? Lower: Serratus anterior, pectoralis minor, spine extensors, Upper: Rhomboids, neck flexors Acetylcholine (ACH) is released from vesicles and is sent over the synaptic cleft to receptors on the postsynaptic bulb. Synergist: serratus anterior, Action: Moves scapula towards chest wall joint act as a fulcrum. Peripheral Nerve Surgical Procedures for Cervical Dystonia", "64 Cranial Nerve XI: The Spinal Accessory Nerve", https://en.wikipedia.org/w/index.php?title=Sternocleidomastoid_muscle&oldid=1134499511. Sternocleidomastoid (SCM) muscle pain in the neck typically results from muscle tension or performing repeated motions. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The splenius captis is located on the lateral side of the C7. This cookie is set by GDPR Cookie Consent plugin. D. cognizant We also use third-party cookies that help us analyze and understand how you use this website. b) orbicularis oris. The muscle that is contracting is called. A. Sternocleidomastoid. Scalenes, opposite side of splenius capitis, Anterior,Medial, and Posterior Transverse Processes of the Cervical Vertabrae, Bilaterally: Elevate the ribs during Inhalation (ALL), Posterior neck muscles/ extensors opposite scalenes, External occipital protuberance, medial portion of superior nuchal line of the occiput. Antagonist: deltoid The SCN can produce several different neck movements. Muscles Testing and Function with Posture and Pain. One head attaches to the front (i.e., the anterior surface) of the manubrium. Unilaterally: Elevate the scapula, downwardly rotate scapula, laterally flex the head and neck, rotate the head and neck, Spinous processes of all vertebrae except C-1, Bilaterally: Extend the vertebral column 2 What muscle is behind the sternocleidomastoid? Torticollis gives the appearance of a tilted head on the side involved. Which of the following muscle is most active during the abductive of the arm? Synergist: psoas, Action: adducts thigh Studies report that morphometric and cross-sectional area a-symmetry between SCM of two sides result from unequal growth in utero and play an important role in the genesis of tension type headache. Sternocleidomastoid. Did Marta's family fly(5)\overset{\text{(5)}}{{\underline{\text{fly}}}}fly(5) in a time machine on the way back from Sydney? The longus colli is a deep cervical flexor acting as an important synergist with the sternocleidomastoid muscle. Get Top Tips Tuesday and The Latest Physiopedia updates, The content on or accessible through Physiopedia is for informational purposes only. Antagonist: deltoid antagonist: deltoid, teres minor, infraspinatus, synergist: pectoralis major and serratus anterior, synergist: latissimus dorsi, subscapularis, teres major, biceps brachii, latissimus dorsi, deltoid, synergist: pectoralis minor kleine weie friedenstaube text und noten. Muscles have a point of origin and a point of insertion origin - (head) - normally is more stationary than insertion insertion - undergoes more movement. We were now about to penetrate a country at least two thousand miles in width, on which the foot of civilized man had never (3) trodden; the good or evil it had in store for us was for experiment yet to determine, and these little vessells contained every article by which we were to expect to (4) subsist or defend ourselves. Synergist: Tensor fascia latae, Action: Extends thigh Antagonist: Extensor digitorium longus Antagonist: Sartorious The supraspinatus and infraspinatus muscles have the main part of their body attached to which of the following bone? Synergist: teres major, Action: Lateral rotation of humerus Use each word once. on 2022-08-08. ), In American English, words ending in the sound ens are usually spelled with -nce, as in reverence. (a) Teres major (b) Triceps brachii (c) Pectoralis major (d) Latissimus dorsi. Antagonist: Triceps brachii K. irascible Antagonist: Biceps femoris skeletal muscle contracts and pulls on bone. (Select all that apply.) The SCMs on each side of your body course from the breastbone and collar bone in the upper part of the chest to the back of the head. It can be felt on each side of the neck when a person moves their head to the opposite side. Antagonist: triceps brachii Along the muscle fibers are t-tubule openings which facilitate the spread of the action potential into the muscle fibers. Antagonist: Flexor carpi ulnaris The movement of troponin and tropomyosin is key in facilitating the myosin head to move along the thin filament, resulting in a contraction of the sternocleidomastoid muscle. What appendicular muscles are needed to maintain the upper limbs pointed straight ahead, with the fingers pointed (extended), palms down (pronated), forearms extended, and arms fully flexed, with scapulae elevated and upwardly rotated (the glenoid cavitie, Which of the following muscles moves both the pectoral girdle and the glenohumeral joint? The manubrium is the uppermost section of the breastbone. Cervical Muscle Myoelectric Response to Acute Experimental Sternocleidomastoid Pain. The following passage is from a journal kept by Meriwether Lewis and William Clark during their heralded exploration of the American West. Insertion: Attaches to the mastoid process and the lateral half of the superior nuchal line of the occipital bone. a. Biceps brachii b. Triceps brachii c. Jaw d. Tongue. The sternocleidomastoid muscle is an axial muscle located on either side of the neck and supports forward and lateral flexion at the neck as well as rotation and elevation of the sternum and. 83% average accuracy. Contraction of the muscle gives rise to a condition called torticollis or wry neck, and this can have a number of causes. a) Anterior Deltoid b) Teres Major c) Infraspinatus d) Latissimus Dorsi, Which of the following muscles acts to flex and adduct the arm? Which of these muscles is not the muscle of inspiration? Antagonist: Sternocleidomastoid; Longus colli and capitis; Scalenus anterior, . Synergist: Tibialis posterior, Action: Keeps foot flat on ground As the muscles contract across the shoulder joint it brings your shoulder upward into flexion as you push the ball the opposite happens and the antagonist becomes your deltoid and the latissimus dorsi becomes your agonist. Save. . Antagonist: pectoralis major antagonist; adductor group, gracilis, synergist: hamstring muscles and gracilis (b) Analyze Cause and Effect: How do the soothsayers' predictions help prompt the king's wishes? For example, the agonist, or prime mover, for hip flexion would be the iliopsoas. Antagonist: Gracilis It tilts your head to the ipsilateral (same) side to which the muscle is located. Antagonist: Masseter The antagonist of the splenius capitis muscle is the Sternocleidomastoid. Verywell Health's content is for informational and educational purposes only. That is usually the journal article where the information was first stated. Cervical isometrics in various directions including flexion, side bending, and rotation. B. Abdominal. A synergist that makes the insertion site more stable is called a fixator. (a) What does the king specify as his wish for Mari Djata? Antagonist: Soleus [2]. Antagonist: deltoid One side can contract, or both sides can contract. G. enmity Which of the following muscles is primarily a postural muscle? Bilateral SCM muscle contraction thrusts the chin forward when your head is level. Coming back to Los Angeles, however, they werearriving(4)\overset{\text{(4)}}{{\underline{\text{were arriving}}}}werearriving(4) at a time three and one-half hours earlier than when they left Sydney. It IS NOT medical advice. The sternal head is a round fasciculus, tendinous in front, fleshy behind, arising from the upper part of the front of the manubrium sterni. It is partially covered by the gluteus maximus. When you visit the site, Dotdash Meredith and its partners may store or retrieve information on your browser, mostly in the form of cookies. The sternocleidomastoids (SCMs) are superficially located neck muscles that play an important role in tilting your head and turning your neck, as well as other movements. Which of these muscles is the prime mover of elbow extension? These muscles also support and provide protection for the internal structures of the neck. In the case of the sternocleidomastoid muscle, it is innervated by the accessory nerve (cranial nerve XI). The sternocleidomastoid muscles flex the neck and the splenius cervicis muscles extend it. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. In most cases Physiopedia articles are a secondary source and so should not be used as references. Action: draws eyebrows together and inferiorly; wrinkles forehead vertically (frowning) Action: bilaterally- flexes & rotates lumbar region; compresses abdomen; unilaterally- trunk rotation and lateral flexion. The function of this muscle is to rotate the head to the opposite side or obliquely rotate the head. Capt. Moore, Keith, L., Dalley, Arthur, F. Clinically Oriented Anatomy. Antagonist: Brachioradialis Synergist: Brachioradialis, Action: Extends thumb Synergist: infraspinatus, Action: stabilizes scapula c. Spinalis. (I bought one thing for Dad. (a) Teres major (b) Supraspinatus (c) Biceps brachii (d) Brachialis (e) Pectoralis major. a) orbicularis oris b) platysma c) orbicularis oculi d) sternocleidomastoid, What muscle is directly lateral to the sternohyoid? What experience do you need to become a teacher? The major muscles of the neck include the semispinalis capitis, splenius capitus, levator scapulae, scalenes, trapezius, sternohyoid, onohyoid, and the sternocleidomastoid. Antagonist: To identify the relationship between bones and skeletal muscles in producing movement. Lower: Levator Scapulae. Antagonist: gastrocnemius Treatment for this involves strengthening exercises for the SCM muscle, and repair of the nerve if possible. 9th - 12th grade. [4], They arise from the anterolateral surface of the manubrium sterni and the medial third of the superior surface of the clavicle, respectively. E. The. Interrelationship of the Spine, Rib Cage, and Shoulder", "28. Synergist: flexor carpi radialis, Action: Arm abduction Origin vs. insertion b. Intrinsic vs. extrinsic c. Agonist vs. antagonist 2. When you take a deep bow, which of the following muscles do you use? This website uses cookies to improve your experience while you navigate through the website. How did the United States respond to Jewish refugees after Kristallnacht? Which muscle acts as an agonist with the teres minor during lateral rotation of the shoulder? Antagonist: sartorious a) Gluteus maximus b) Iliopsoas c) Extensor hallucis longus d) Lumbricals e) Dorsal interosseous, Which of the following muscles acts primarily to plantarflex toes 2-5? Describe the relationship between bones and skeletal muscles in the production of body movements. The platysma muscle is a superficial muscle of the human neck that overlaps the sternocleidomastoid. It also acts as an accessory muscle of inspiration. (a) Latissimus dorsi (b) Infraspinous (c) Supraspinous (d) Subscapularis. They may not cause any functional advantage or disadvantage in neck movement but might be physically interfering during invasive procedures. Role of muscles . Synergist: Abductor pollicis longus, Action: forearm flexor The passage is written by Lewis and dated April 7, 1805. Synergist: Scalenes, Action: elevates hyoid bone a. Abductor pollicis brevis b. Opponens pollicis c. Flexor pollicis brevis d. Extensor pollicis longus, Which of the following muscles is (only) responsible for scapular protraction, downward rotation, and depression? synergist and antagonist musclesnixon high school yearbooks synergist and antagonist muscles. Describe how the prime move The sternocleidomastoid is the prime mover and the splenius cervicis is the synergist. (a) splenius capitis (b) semispinalis capitis (c) longissimus capitis (d) both (a) and (b) (e) all of the above. This category only includes cookies that ensures basic functionalities and security features of the website. Lateral flexion of the head and cervical spine when acting unilaterally [2] Itprotects the vertical neurovascular bundle of neck, branches of cervical plexus, deep cervical lymph nodes and soft tissues of neck from damage[2], Image: Sternocleidomastoid muscle (highlighted in green) - anterior view[3], This 2 minute video is a good summary of the sternocleidomastoid muscle. Antagonist: Gastrocnemius (Sternocleidomastoid synergist) Muscle Origin Insertion Action Muscle that Move the Pectoral Girdle Trapezius Occipital bone, ligamentum nuchae, spinous process C 7 - T 12. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Antagonist: extensor carpi ulnaris Scalene Muscle Group Synergist: Sternocleidomastoid, Longus colli and capitis c) brachialis. Necessary cookies are absolutely essential for the website to function properly. (c) Transverse cervical. The sternocleidomastoid muscles flex the neck, and the splenius cervicis muscles extend it. Anatomy of the Human Body. Churchill Livingstone. These cookies ensure basic functionalities and security features of the website, anonymously. [3][4] The sternocleidomastoid is thick and narrow at its centre, and broader and thinner at either end. Six heads of origin of sternocleidomastoid muscle: a rare case. The antagonist of the splenius capitis muscle is the Sternocleidomastoid. scalenes 3 months ago. We therefore modeled the effects of drug . E. The sternocleidomastoid is the synergist and the splenius cervicis is the fixator. Our vessels consisted of six small canoes, and two large (1) pirogues. (b) The glenohumeral joint allows for movement in which dimensions? Antagonist: Sartorious https://www.kenhub.com/en/library/anatomy/sternocleidomastoid-muscle, https://www.youtube.com/watch?v=eD3Ds3GIt9M, https://www.physio-pedia.com/index.php?title=Sternocleidomastoid&oldid=299309, a medial rounded and tendinous sternal head (SH). Antagonist: Splenius Extension of the head and cervical spine when posterior fibers act bilaterally, 2. All rights reserved. The SCM muscle helps turn and bend your neck. Strap-like; e.g., sternocleidomastoid Or: They assist the SCM in turning and tilting both the head and neck. When refering to evidence in academic writing, you should always try to reference the primary (original) source. Which of the following muscles flexes the neck? Like Seeleys essentials of anatomy physiology ( etc.)? roberta snider hartville ohio obituary la dissolution est une transformation chimique ou physique i would appreciate any feedback you can provide carbon nation tribe . a. Pectoralis major b. Serratus anterior c. Supraspinatus d. Teres major. Anne Asher, ACE-certified personal trainer, health coach, and orthopedic exercise specialist, is a back and neck pain expert. Unilaterally- Laterally Flex the head and neck, rotate. On the answer line, write the word from the box that completes item below. Synergist: rectus femoris, Muscles of the Forearm & Hand(Bio 107: Anatom, Head and Neck Muscles - Action, Antagonist, S, Muscles of the Forearm That Move Wrist, Hand, Byron Almen, Dorothy Payne, Stefan Kostka, Eric Hinderaker, James A. Henretta, Rebecca Edwards, Robert O. Self, By the People: A History of the United States, AP Edition. Synergist: NA, Action: Forearm supinator Which of the following muscles does not attach to the humerus? Contralateral rotation of the head and cervical spine when acting unilaterally. Rotation, retraction, elevation, and depression of scapula, serratus anterior muscle, Latissimus dorsi, Pectoralis Major. The two heads are separated by a triangular surface depression, the lesser supraclavicular fossa. Encircles mouth, inserts into muscle/skin at mouth angle. last ten years, I could but esteem this moment of my departure as among the most happy of my life. The sternocleidomastoid muscles help to flex the neck. The sternocleidomastoid is innervated by accessory nerve of the same side. Coloring helps memory retention. Antagonist: tensor fascia latae antagonist: adductor group, gracilis, synergist: gluteus medius, gluteus minimus, gluteus maximus Which of the following muscles is used in breathing? Spinal accessory nerve (XI), with sensory supply from C2 & C3 (for proprioception), Sternocleidomastoid branch of the Occipital artery, Draws the mastoid process down toward the same side which causes the chin to turn up toward the opposite side; acting together, the muscles of the two sides flex the neck. ibed_guidance published Seeleys essentials of anatomy physiology ( etc.) Finally, look up each word in the dictionary and record the definitions on the lines below. New York. Synergist Agonist Antagonist Stabilizers Neutralizers. It is also known as SCM or Sternomastoid or Sterno muscle. 1 What is the synergist muscle for sternocleidomastoid? The thickness of the CH is variable. Synergist: Masseter, Action: Wrinkles chin You also have the option to opt-out of these cookies. synergist: sternocleidomastoid, rhomboids, synergists: middle deltoid and infraspinatus, synergist: teres minor, subscapularis, supraspinatus, deltoids, synergist: deltoid, pectoralis major, latissimus dorsi, subscapularis, synergist: rhomboids, pectoralis major, teres major, synergist: supraspinatus and pectoralis major (for flexion) d) biceps brachii. This muscle binds the skull to the sternum and clavicle. They assist the SCM in turning and tilting both the head and neck. Synergist: Sartorious, Action: Powerful hip extensor a. rhomboid major b. rhomboid minor c. trapezius d. serratus anterior, Which of the following posterior muscles is associated with shoulder joint adduction, extension, internal rotation, and horizontal abduction? What muscle(s) serves as an antagonist to the biceps? Antagonist: gluteus maximus Antagonist: Extensor digitorium longus 2023 Dotdash Media, Inc. All rights reserved. Action: When it is acting superiorly, it elevates the 1st rib as in the process of inhalation; inferiorly, assists in flexion and rotation of the neck. b) gastrocnemius. - a synergist - an antagonist - a fixator - a prime mover - an antagonist. Variations Of The Sternocleidomastoid Muscle: A Literature Review. When they flied(3)\overset{\text{(3)}}{{\underline{\text{flied }}}}flied(3) from Los Angeles to Sydney, Australia, they arrived at a time that was nearly 323232 hours later than the time when they left. antagonist; erector spinae, synergist: hamsting muscles The splenius captis is located on the lateral side of the C7. Sternocleidomastoid Synergists Scalenes, opposite side of splenius capitis Sternocleidomastoid Antagonists Upper Traps, opposite side of the SCM Scalenes Origin Anterior,Medial, and Posterior Transverse Processes of the Cervical Vertabrae Scalenes Insertion Anterior Insertion- First Rib Medial Insertion- First Rib Posterior Insertion- Second Rib Antagonist: pronator teres Enterta[in]ing as I do, the most confident hope of succeeding in a voyage which had formed a (7) da[r]ling project of mine for the The signaling process to contract or relax the sternocleidomastoid begins in Cranial Nerve XI, the accessory nerve. H. erroneous a) Depressor anguli oris b) Mentalis c) Depressor labii inferioris d) Platysma e) Masseter, Which of the following muscles has superior, middle and inferior sections? Antagonist: Flexor carpi ulnaris Synergist: supinator, Action: Stabilizes wrist Edit. Innervation is when an organ or body part is supplied with nerves. S, sternocleidomastoid: 7", trapezius; D, deltoid; . Unilaterally: contralateral cervical rotation, ipsilateral cervical flexion An excellent book for those beginning the study of anatomy. A. prime mover (agonist) B. antagonist C. synergist D. fixator E. origin F. insertion, Which muscle extends the elbow? The party are in excellent health and sperits, zealously attached to the enterprise, and anxious to proceed; not a whisper or murmur or discontent to be heard among them, but all act in unison, and with the most perfict harmony. Antagonist: Tibialis posterior Synergist: Sarotious, Action: Abducts and medially rotates thigh Treatment of a shortened SCN involves gentle stretching of a tight SCM muscle to lengthen it to a normal shape. Platysma - single sheetlike; covers anterolateral neck; Sternocleidomastoid - paired muscle; PRAYER MUSCLE Bilaterally: Stabilizes the head, flexion of the head and neck, checkreins backwardmotion of the head and neck, Innervation:Accessory nerve: cranial nerve XII and ventral rami of the (C2, C3), Blood Supply:Branches from the vertebral artery, 1. Meanwhile, a muscle with the opposite action of the prime mover is called an antagonist. Rational design of synergistic drug combinations remains a challenge despite active experimental and computational efforts. The Internet Journal of Human Anatomy 2010. Muscles that work like this are called antagonistic pairs. But opting out of some of these cookies may affect your browsing experience. Action: Flexes or rotates the head Synergist: None Antagonist: None. a. Pectoralis minor b. Subscapularis c. Rhomboid d. Trapezius, Which of the following muscles has two heads? Furthermore, they are components of the boundaries of the submental and submandibular triangles of the neck. a. triceps brachii b. pronator quadratus c. adductor pollicis d. flexor carpi radialis e. abductor pollicis brevis, Which of the following muscles is a lateral rotator of the arm? (a) biceps brachii (b) triceps brachii (c) jaw (d) tongue. process of using agonist and synergist to dynamically move the joint into range of motion. A. Brachialis B. Deltoid C. Triceps Brachii D. Brachioradialis E. Trapezius. Antagonist: tensor fascia latae Antagonist: sternocleidomasteoid chest press -> rotator cuff Antagonist . Unilaterally: Rotation of head to the opposite side, lateral flexion of the neck on the same side English Edition. However, there are many common except ions end ing with -nse, such as suspense. Rotation of the head to the opposite side or obliquely rotate the head. This study described effects of experimental muscle pain on resting EMG activity in a jawclosing muscle and a leg muscle. The time in the first time zone east of the date line is 232323 hours earlier than the time in the first time zone to the west. Which of the following muscles extends the head on the neck? Sternocleidomastoid (anterior fibers) 2. LAB 5 Muscle I Axial Muscular System Objectives: To know the primary functions of the muscular system. The two heads are separated from one another at their origins by a triangular interval (lesser supraclavicular fossa) but gradually blend, below the middle of the neck, into a thick, rounded muscle which is inserted, by a strong tendon, into the lateral surface of the mastoid process, from its apex to its superior border, and by a thin aponeurosis into the lateral half of the superior nuchal line of the occipital bone. Which of the following muscles is completely superficial? What is the function of the sternocleidomastoid muscles? Read the flipbook version of Seeleys essentials of anatomy physiology ( etc.). Synergist: Extensor digitorium, Action: Powerful arm extensor Which of the following is the term that describes the relation of brachioradialis to biceps brachii during forearm flexion? 1 : an agent that increases the effectiveness of another agent when combined with it; especially : a drug that acts in synergism with another. This website uses cookies to improve your experience while you navigate through the website. Antagonist: Gluteus maximus Synergist: pectineus, Action: Hip flexor The muscle allows the head and vertebrae to extend. The muscle fibers of all these layers lie within a common fascial sheath and traverse in the same direction.Knowledge of this layered arrangement and the changes in cases of muscle variations is helpful during muscle flap harvesting procedures. Which of the muscles is involved in the pronation of the forearm? What muscle is behind the sternocleidomastoid? The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck. a. Levator scapulae b. Pectoralis minor c. Rhomboid d. Serratus anterior e. Trapezius, Which of the following muscles is a rotator cuff muscle? Muscles and nerves MBLEx. Antagonist: Extensor digitorium longus The sternocleidomastoid muscles (SCM) help with functions such as head rotation, head tilt, pointing the chin toward the breastbone, and more. testreviewer. Antagonist: Flexor carpi radialis (a) diaphragm (b) triceps brachii (c) pronator teres (d) flexor carpi ulnaris (e) extensor indicis. It is sometimes also called the "prime mover". Antagonist: Latissimus dorsi Antagonist: Supinator This tent is in the Indian stile formed of a number of (8) dressed Buffaloe skins sewed together with sinues. Antagonist: Digastric This condition when present in humans is considered to be a variation from normal. The cookie is used to store the user consent for the cookies in the category "Analytics". The SCM becomes chronically shortened in cases of torticollis. shotty's jello shots vegan; stephanie cartel crew before surgery; what does not retained mean on job application; new restaurants coming to jacksonville nc 2022 It is given the name sternocleidomastoid because it originates at the manubrium of the sternum (sterno-) and the clavicle (cleido-) and has an insertion at the mastoid process of the temporal bone of the skull.[3]. d) occipitalis. Recognizing Compound Indirect Objects. Which muscle acts as an antagonist to trapezius? b. Quadratus lumborum. Which of the following muscles is most active during extension of the arm/glenohumeral joint?