Recognizing Compound Indirect Objects. A) The sternocleidomastoid is the prime mover, and the splenius cervicis is the fixator. Effects of experimental muscle pain on muscle activity and co Which of the following muscles is an elbow extensor? The muscle that is contracting is called. What experience do you need to become a teacher? Synergist: Masseter, Action: Flex & Rotate neck This can cause atrophy (shrinking) in the affected SCM and may cause difficulty in turning the head and bending the neck. Agonist and Antagonist Pairs and Origin and Insertion Terms A. rectus abdominis B. transversus abdominis C. erector spinae D. latissimus dorsi. Antagonist: Brachioradialis Antagonist: Digastric Synergist: pectineus, Action: Hip flexor Antagonist: Extensor carpi ulnaris 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) Synergist: Gluteus maximus, Action: Medially rotates leg at thigh Flexion of the head and cervical spine when anterior fibers act bilaterally, 3. MBLEx Review: Interactions of Skeletal Muscles; Agonist, Antagonist Antagonist: infraspinatus Sternocleidomastoid (SCM) muscle pain in the neck typically results from muscle tension or performing repeated motions. Middle deltoid c. Posterior deltoid d. Superior deltoid. Contraction of the muscle gives rise to a condition called torticollis or wry neck, and this can have a number of causes. Synergist: NA, Action: Planatar flexion when knee is extended Cookies collect information about your preferences and your devices and are used to make the site work as you expect it to, to understand how you interact with the site, and to show advertisements that are targeted to your interests. Synergist muscles help other muscles perform one or more functions. The sternocleidomastoid is the prime mover and the splenius cervicis is the fixator. Sternocleidomastoid muscle - Wikipedia a. Levator scapulae b. Pectoralis minor c. Rhomboid d. Serratus anterior e. Trapezius. These cookies will be stored in your browser only with your consent. These cookies do not store any personal information. An impairment or injury to the spinal accessory nerve can cause weakness or paralysis to the SCM. antagonist; erector spinae, synergist: hamsting muscles "offense, offence". Antagonist: Gracilis Essential Clinical Anatomy - Moore, Keith L | PDF | Anatomical Terms Of (d) Segmental branches. Synergists (Neutralizers): Muscles that contract to assist the prime movers, either by: adding force to the movement and making it more refined Or . Click to see the original works with their full license. The antagonist of the splenius capitis muscle is the Sternocleidomastoid. (b) Analyze Cause and Effect: How do the soothsayers' predictions help prompt the king's wishes? Describe how the prime move As they ascend, the CH spirals behind the SH and blends with its deep surface below the middle of the neck, forming a thick rounded belly. By clicking Accept All, you consent to the use of ALL the cookies. The scalenes are synergist muscles, or helper, muscles to the sternocleidomastoid. synergist that assists an agonist by preventing or reducing movement at another joint, thereby stabilizing the origin of the agonist flexion movement that decreases the angle of a joint fulcrum an axis of rotation, like a joint fusiform muscle that has fascicles that are spindle-shaped to create large bellies insertion Benign fibrosis, hypoplasia or aplasia of SCM is the most common cause of congenital torticolis. Which of the following muscles is most active during lateral rotation of the arm? Nerve Supply: Cervical nerve 7. 9th - 12th grade. Antagonist: tensor fascia latae antagonist: latissimus dorsi, pectoralis major (for adduction), synergist: teres major, pectoralis major, latissimus dorsi Head and neck to opposite side, elevate the scapula, upwardly rotate the scapula The function of this muscle is to rotate the head to the opposite side or obliquely rotate the head. for free. Muscle Synergists and Antagonists Flashcards | Quizlet _____ was likely to be burnt at the stake. Synergist: infraspinatus, Action: stabilizes scapula Antagonist: Flexor carpi ulnaris Physiopedia articles are best used to find the original sources of information (see the references list at the bottom of the article). a) Zygomaticus major b) Digastric c) Sternohyoid d) Depressor anguli oris. The fibers from the accessory nerve nucleus travel upward to enter the cranium via the foramen magnum. 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? 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. (a) latissimus dorsi (b) pectoralis major (c) rhomboid (d) subclavius (e) trapezius. Meanwhile, a muscle with the opposite action of the prime mover is called an antagonist. There are also cases presenting with extra sternal and clavicular heads of origin in SCM.These additional heads, may be unilateral or bilateral and cause significant stenosis of the lesser supraclavicular fossa, imposing complications for anesthesiologists during the anterior central venous catheterization approach. Drug combinations may exhibit synergistic or antagonistic effects. Necessary cookies are absolutely essential for the website to function properly. Clavo-trapezius (posterior; superior to acromio-trapezius) . The muscle that is contracting is called the agonist and the muscle that is relaxing or lengthening is called the antagonist. load is the weight of the object. This cookie is set by GDPR Cookie Consent plugin. Antagonist Muscles On the opposite side of the body from the multifidus and erector spinae are the abdominal muscles. Sternocleidomastoid Function with and without the Longus Colli. Scalene Muscles Copyright American Academy of Manual Medicine Did Marta's family fly(5)\overset{\text{(5)}}{{\underline{\text{fly}}}}fly(5) in a time machine on the way back from Sydney? Antagonist: external intercostals When the clavicular origin is broad, it is occasionally subdivided into several slips, separated by narrow intervals. What muscle attaches at the anterior superior iliac spine, and crosses both the hip and knee joints? 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. Bilateral SCM muscle contraction thrusts the chin forward when your head is level. Lippincott, Williams and Wilkins. They assist the SCM in turning and tilting both the head and neck. antagonist; adductor group, gracilis, synergist: gluteus medius and tensor fasciae latae A. Frontalis B. Lateral rectus C. Sternocleidomastoid D. Masseter E. Hyoglossus, Which of the muscles listed below initiates movement at the talocrural (ankle) joint? Antagonist: deltoid There are reports of a broad clavicular head splitting into multiple small muscular slips. This tent is in the Indian stile formed of a number of (8) dressed Buffaloe skins sewed together with sinues. Because drugs manifest their action via their targets, the effects of drug combinations should depend on the interaction of their targets in a network manner. Which of the following muscles is part of the rotator cuff? Antagonist: tensor fascia latae 11 times. Antagonist: Adductor mangus Synergist: teres minor, Action: Lifts ribs The ACH causes the resting potential to increase above -55mV, thus initiating an action potential which travels along the muscle fiber. 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. Muscles and nerves MBLEx. Origin vs. insertion b. Intrinsic vs. extrinsic c. Agonist vs. antagonist 2. Ch. 11 Key Terms - Anatomy and Physiology | OpenStax In most cases Physiopedia articles are a secondary source and so should not be used as references. Six heads of origin of sternocleidomastoid muscle: a rare case. Top Contributors - Venus Pagare, Admin, Kim Jackson, Joao Costa, Daniele Barilla, WikiSysop, Joshua Samuel, Evan Thomas, Tarina van der Stockt and Lucinda hampton, Sternocleidomastoid (SCM) (synonym musculus sternocleidomastoideus)is a paired superficial muscle in the anterior portion of the neck. Synergist: Abductor pollicis longus, Action: forearm flexor Insert a caret (^) to show where the word only should be placed to match the meaning in parentheses. Which of the following muscles is most active during extension of the arm/glenohumeral joint? Other functions of the SCM include assisting in breathing, maintaining neck posture, and helping the temporomandibular joint (TMJ) function. The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck. 3 months ago. [medical citation needed]. Action: draws eyebrows together and inferiorly; wrinkles forehead vertically (frowning) Action: bilaterally- flexes & rotates lumbar region; compresses abdomen; unilaterally- trunk rotation and lateral flexion. 2 What are synergist muscles? Synergist: Gastrocnemius, Action:Flexes big toe 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. What Is the Antagonist Muscle Group for the Back Extension? Synergist: Brachioradialis, Action: Extends thumb E. The sternocleidomastoid is the synergist and the splenius cervicis is the fixator. 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 The supraspinatus and infraspinatus muscles have the main part of their body attached to which of the following bone? In the Middle Ages, when the Catholic Church was all-powerful, a(n) When both SCM muscles contract, the movements can include: Simultaneous bilateral SCM muscle contraction also plays a role in the breathing process. Synergist: Splenius, Action: adducts and medially rotates arm We therefore modeled the effects of drug . S, sternocleidomastoid: 7", trapezius; D, deltoid; . The muscle allows the head and vertebrae to extend. Which of the following muscles performs cervical extension only? LAB 5 Muscle I Axial Muscular System Objectives: To know the primary functions of the muscular system. Middle deltoid c. Posterior deltoid d. Superior deltoid, Which shoulder joint muscle is associated with humeral abduction, flexion, horizontal adduction and internal rotation? The passage is written by Lewis and dated April 7, 1805. skeletal muscle is attached to bone at origin and insertion. Synergist: palmaris longus, Action: Tenses skin & fascia of palm Get Top Tips Tuesday and The Latest Physiopedia updates, The content on or accessible through Physiopedia is for informational purposes only. a) trapezius b) levator scapula c) serratus anterior d) latissimus dorsi. Muscle Anatomy Chart - Muscle Origin Insertion Action Muscle - StuDocu Synergist: gluteus maximus, Action: extends knee and stabilizes it (b) The glenohumeral joint allows for movement in which dimensions? C. censure Muscles: Action, Antagonist and Synergist Flashcards | Quizlet