| MSA | major serologic antigen; male-specific antigen; mannitol salt agar; Medical Services Administration;... |
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| MSE | medical support equipment; mental status examination; muscle-specific enolase |
| msp | muscle spasm |
| MSR | macrophage scavenger receptor; Member of the Society of Radiographers; monosynaptic reflex; muscle s... |
| MT | magnetization transfer; malaria therapy; malignant teratoma; mammary tumor; mammilothalamic tract; m... |
| coracobrachial muscle | <anatomy> Relating to the coracoid process of the scapula and the arm. <muscle> Origin, coracoid process of scapula; insertion, middle of medial border of humerus; action, adducts and flexes the arm; resists downward dislocation of shoulder joint; nerve supply, musculocutaneous. See: coracobrachial bursa. Synonym: musculus coracobrachialis, Casser's perforated muscle, coracobrachial muscle. (05 Mar 2000) |
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| corrugator cutis muscle of anus | Smooth muscle fibres radiating from the anal opening superficial to the external sphincter. Synonym: musculus corrugator cutis ani. (05 Mar 2000) |
| corrugator muscle | <anatomy, muscle> Origin, from orbital portion of musculus orbicularis oculi and nasal prominence; insertion, skin of eyebrow; action, draws medial end of eyebrow downward and wrinkles forehead vertically; nerve supply, facial. Synonym: musculus corrugator supercilii, Coiter's muscle, corrugator muscle, wrinkler muscle of eyebrow. (05 Mar 2000) |
| cowl muscle | <anatomy, muscle> Origin, medial third of superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous processes of seventh cervical and the thoracic vertebrae and corresponding supraspinous ligaments; insertion, lateral third of posterior surface of clavicle, anterior side of acromion, and upper and medial border of the spine of the scapula; action, when scapulae are fixed, portions of muscle can act independently: cervical portion elevates scapula, thoracic portion contributes to depression of scapula; upper and lowermost portions act simultaneously to rotate glenoid fossa superiorly; when the entire muscle and especially middle part contracts, the scapulae retract; draws head to one side or backward; nerve supply, motor by accessory, sensory by cervical plexus. Synonym: musculus trapezius, cowl muscle, trapezius. (05 Mar 2000) |
| Crampton's muscle | <anatomy> The part of the ciliary muscle formed by the meridional fibres. Synonym: Crampton's muscle. (05 Mar 2000) |
| cricopharyngeus muscle | <anatomy, muscle> This is the horizontal muscle located at the top of the oesophagus. (13 Nov 1997) |
| posterior auricular muscle | <anatomy, muscle> Origin, mastoid process; insertion, posterior portion of root of auricle; action, draws back the pinna; nerve supply, facial. Synonym: musculus auricularis posterior, musculus retrahens aurem, musculus retrahens auriculam. (05 Mar 2000) |
| posterior belly of digastric muscle | <anatomy> Portion of digastric muscle posterior to the intermediate tendon, attaching to the digastric groove of the temporal bone. Synonym: venter posterior musculi digastrici. (05 Mar 2000) |
| posterior cricoarytenoid muscle | <anatomy, muscle> Origin, depression on posterior surface of lamina of cricoid; insertion, muscular process of arytenoid; action, abducts vocal folds, widening rima glottidis as for taking a breath; nerve supply, recurrent laryngeal. Synonym: musculus cricoarytenoideus posterior. (05 Mar 2000) |
| cruciate muscle | <anatomy> A general type of muscle in which the muscles or bundles of muscle fibres cross in an X-shaped configuration; e.g., the oblique arytenoid muscles. Synonym: musculus cruciatus. (05 Mar 2000) |
| posterior scalene muscle | <anatomy, muscle> Origin, posterior tubercles of transverse processes of fourth to sixth cervical vertebrae; insertion, lateral surface of second rib; action, elevates second rib; nerve supply, cervical and brachial plexuses. Synonym: musculus scalenus posterior, musculus scalenus posticus, posterior scalene muscle. (05 Mar 2000) |
| posterior tibial muscle | <anatomy, muscle> Origin, soleal line and posterior surface of tibia, the head and shaft of the fibula between the medial crest and interosseous border, and the posterior surface of interosseous membrane; insertion, navicular, three cuneiform, cuboid, and second, third, and fourth metatarsal bones; action, plantar flexion and inversion of foot; nerve supply, tibial. Synonym: musculus tibialis posterior, musculus tibialis posticus, posterior tibial muscle. (05 Mar 2000) |
| cutaneomucous muscle | <anatomy> The "sucking muscle," a labial muscle formed by sagittal fibres running from the skin to the mucous membrane. Synonym: Aeby's muscle, Bovero's muscle, compressor muscle of lips, Klein's muscle, Krause's muscle, mucocutaneous muscle, musculus cutaneomucosus. (05 Mar 2000) |
| Pozzi's muscle | extensor digitorum brevis muscle of hand |
| cutaneous muscle | <anatomy> A muscle that lies in the subcutaneous tissue and attaches to the skin; it may or may not have a bony attachment. The muscles of expression are the chief examples of cutaneous muscles in the human. Synonym: musculus cutaneus. (05 Mar 2000) |