| AIS | Abbreviated Injury Scale; amniotic infection syndrome; androgen insensitivity syndrome; anterior int... |
|---|---|
| ANAS | anastomosis; auditory nerve activating substance |
| ANI | acute nerve irritation |
| anti-PNM Ab | anti-peripheral nerve myelin antibody |
| C1 | first cervical nerve; first cervical vertebra; first component of complement |
| synovial sheath | See: synovial tendon sheath, vagina synovialis trochleae, synovial sheaths of digits of hand, synovial sheaths of digits of foot. (05 Mar 2000) |
|---|---|
| synovial tendon sheath | A sheath of synovial membrane enveloping certain of the tendons; it contains a small amount of synovial fluid. Synonym: vagina synovialis tendinis, mucous sheath of tendon, theca tendinis, vagina mucosa tendinis, vaginal synovial membrane. (05 Mar 2000) |
| dural sheath | An extension of the dura mater that ensheathes the roots of spinal nerves or, more particularly, the vagina externa nervi optici. (05 Mar 2000) |
| infundibuliform sheath | The fascia enclosing the femoral vessels, formed by the transversalis fascia anteriorly and the iliac fascia posteriorly; two septa divide the sheath into three compartments, the lateral of which contains the femoral artery and the femoral branch of the genitofemoral nerve, the middle the femoral vein, and the medial is the femoral canal. Synonym: crural sheath, infundibuliform sheath. (05 Mar 2000) |
| inner sheath | The material that encases the two central microtubules of the ciliary axoneme. (18 Nov 1997) |
| intertubercular sheath | The extension of the synovial membrane of the shoulder joint downward in the intertubercular groove to surround the tendon of the long head of the biceps. Synonym: vagina intertubercularis. (05 Mar 2000) |
| tail sheath | The protoplasmic envelope in the tail of a spermatozoon. (05 Mar 2000) |
| tendon sheath | <anatomy> A membranous sleeve which envelops the tendon and creates a lubricated low-friction environment for easy movement. (13 Jan 1998) |
| tendon sheath of abductor pollicis longus and extensor pollicis brevis muscles | The synovial sheath lining the compartment of the extensor retinaculum that contains the abductor pollicis longus and extensor pollicis brevis tendons. Synonym: vagina tendinum musculorum abductoris longi et extensoris brevis pollicis. (05 Mar 2000) |
| tendon sheath of extensor carpi radialis muscles | The synovial sheath lining the compartment of the extensor retinaculum containing the tendons of the extensor carpi radialis longus and brevis muscles. Synonym: vagina tendinum musculorum extensorum carpi radialium. (05 Mar 2000) |
| tendon sheath of extensor carpi ulnaris muscle | The synovial sheath surrounding the tendon of the extensor carpi ulnaris in its course deep to the extensor retinaculum. Synonym: vagina tendinis musculi extensoris carpi ulnaris, peritenon. (05 Mar 2000) |
| tendon sheath of extensor digiti minimi muscle | <anatomy> The synovial sheath surrounding the tendon of the extensor digiti minimi in its passage deep to the extensor retinaculum. Synonym: vagina tendinis musculi extensoris digiti minimi. (05 Mar 2000) |
| tendon sheath of extensor digitorum and extensor indicis muscles | The synovial sheath that surrounds the four tendons of the extensor digitorum muscle and the tendon of the extensor indicis deep to the extensor retinaculum. Synonym: vagina tendinum musculorum extensoris digitorum et extensoris indicis. (05 Mar 2000) |
| 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) |
| 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) |