| optic nerve sheath fenestration | The cutting of a window in the dura of the optic nerve sheath to relieve papilledema and prevent further loss of optic nerve fibres. (05 Mar 2000) |
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| 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) |
| 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) |
| tendon sheath of flexor carpi radialis muscle | <anatomy> The synovial sheath enclosing the tendon of the flexor carpi radialis as it crosses the wrist. Synonym: vagina tendinis musculi flexoris carpi radialis. (05 Mar 2000) |
| tendon sheath of flexor digitorum longus muscle of foot | The synovial sheath that envelops the flexor digitorum longus tendons as they pass into the foot deep to the flexor retinaculum. Synonym: vagina tendinum musculi flexoris digitorum pedis longi. (05 Mar 2000) |
| tendon sheath of flexor hallucis longus muscle | <anatomy> The synovial sheath that envelops the tendon of the flexor hallucis longus as it passes into the foot deep to the flexor retinaculum. Synonym: vagina tendinis musculi flexoris hallucis longi. (05 Mar 2000) |
| tendon sheath of flexor pollicis longus muscle | <anatomy> The synovial sheath that envelops the tendon of the flexor pollicis longus in its course through the carpal canal; it is continuous with the digital sheath of the thumb, the two generally being considered as one sheath. Synonym: vagina tendinis musculi flexoris pollicis longi, radial bursa. (05 Mar 2000) |