| tendon sheath of extensor digitorum longus muscle of foot | The synovial sheath that surrounds the tendons of the extensor digitorum longus muscle and the peroneus tertius in their passage across the ankle. Synonym: vagina tendinum musculi extensoris digitorum pedis longi. (05 Mar 2000) |
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| tendon sheath of extensor hallucis longus muscle | <anatomy> The synovial sheath that surrounds the tendon of the extensor hallucis longus in its passage across the ankle. Synonym: vagina tendinis musculi extensoris hallucis longi. (05 Mar 2000) |
| tendon sheath of extensor pollicis longus muscle | <anatomy> The synovial sheath surrounding the extensor pollicis longus tendon in its passage deep to the extensor retinaculum. Synonym: vagina tendinis musculi extensoris pollicis longi. (05 Mar 2000) |
| extensor muscle of fingers | <anatomy, muscle> Origin, lateral epicondyle of humerus; insertion, by four tendons into the base of the proximal and middle and base of the second and third phalanges of 4 fingers; action, extends fingers and hand; nerve supply, radial (posterior interosseous). Synonym: musculus extensor digitorum, extensor muscle of fingers, musculus extensor digitorum communis. (05 Mar 2000) |
| extensor muscle of little finger | <anatomy, muscle> Origin, lateral epicondyle of humerus; insertion, dorsum of proximal, middle, and distal phalanges of little finger; action, extends fingers; nerve supply, radial (posterior interosseous). Synonym: musculus extensor digiti minimi, extensor muscle of little finger, musculus extensor digiti quinti proprius, musculus extensor minimi digiti. (05 Mar 2000) |
| long extensor muscle of great toe | <anatomy, muscle> Origin, lateral surface of tibia and interosseous membrane; insertion, base of distal phalanx of great toe; action, extends the great toe; nerve supply, anterior tibial. Synonym: musculus extensor hallucis longus, long extensor muscle of great toe. (05 Mar 2000) |
| long extensor muscle of thumb | <anatomy, muscle> Origin, posterior surface of ulna; insertion, base of distal phalanx of thumb; action, extends distal phalanx of thumb; nerve supply, radial. Synonym: musculus extensor pollicis longus, long extensor muscle of thumb, musculus extensor longus pollicis. (05 Mar 2000) |
| long extensor muscle of toes | <anatomy, muscle> Origin, lateral condyle of tibia, upper two-thirds of anterior margin of fibula; insertion, by four tendons to the dorsal surfaces of the bases of the proximal, middle, and distal phalanges of the second to fifth toes; action, extends the four lateral toes; nerve supply, deep branch of peroneal. Synonym: musculus extensor digitorum longus, long extensor muscle of toes, musculus extensor longus digitorum. (05 Mar 2000) |
| anterior rectus muscle of head | <anatomy, muscle> Origin, transverse process and lateral mass of atlas; insertion, basilar process of occipital bone; action, turns and inclines head forward; nerve supply, ventral primary ramus of first and second cervical spinal nerve. Synonym: musculus rectus capitis anterior, anterior rectus muscle of head, musculus rectus capitis anticus minor. (05 Mar 2000) |
| greater posterior rectus muscle of head | <anatomy, muscle> Origin, spinous process of axis; insertion, middle of inferior nuchal line of occipital bone; action, rotates and draws head backward; nerve supply, dorsal branch of first cervical (suboccipital). See: suboccipital muscles. Synonym: musculus rectus capitis posterior major, greater posterior rectus muscle of head, musculus rectus capitis posticus major. (05 Mar 2000) |
| semispinal muscle of head | <anatomy, muscle> Origin, transverse processes of five or six upper thoracic and articular processes of four lower cervical vertebrae; insertion, occipital bone between superior and inferior nuchal lines; action, rotates head and draws it backward; nerve supply, dorsal primary rami of cervical spinal nerves. Synonym: musculus semispinalis capitis, musculus complexus, semispinal muscle of head. (05 Mar 2000) |
| humeroulnar head of flexor digitorum superficialis muscle | <anatomy> The head of the superficial flexor of the digits that attaches to both the humerus and the ulna. Synonym: caput humeroulnare musculi flexoris digitorum superificialis. (05 Mar 2000) |
| short head of biceps brachii muscle | <anatomy> Head of biceps brachii originating from coracoid process of scapula. Synonym: caput breve musculi bicipitis brachii. (05 Mar 2000) |
| short head of biceps femoris muscle | <anatomy> Part of biceps femoris originating from linea aspera of distal half of femur. Synonym: caput breve musculi bicipitis femoris. (05 Mar 2000) |
| smaller posterior rectus muscle of head | <anatomy, muscle> Origin, from posterior tubercle of atlas; insertion, medial third of inferior nuchal line of occipital bone; action, rotates head and draws it backward; nerve supply, dorsal branch of first cervical (suboccipital). See: suboccipital muscles. Synonym: musculus rectus capitis posterior minor, musculus rectus capitis posticus minor, smaller posterior rectus muscle of head. (05 Mar 2000) |