| spina peronealis | A projection from the lateral side of the calcaneus between the tendons of the peroneus longus and brevis. Synonym: trochlea peronealis, trochlea fibularis calcanei, peroneal pulley, processus trochlearis, spina peronealis, trochlear process. (05 Mar 2000) |
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| spina pubis | A small projection at the anterior extremity of the crest of the pubis about 2 cm from the symphysis. Synonym: tuberculum pubicum, pubic spine, spina pubis. (05 Mar 2000) |
| spina scapulae | The prominent triangular ridge on the dorsal aspect of the scapula, providing attachment for the trapezius and deltoid muscles and separating the supra-and infraspinous fossae. Synonym: spina scapulae. (05 Mar 2000) |
| spina suprameatica | Small bony prominence anterior to the supramastoid pit at the posterosuperior margin of the bony external acoustic meatus. Synonym: spina suprameatica, Henle's spine, meatal spine, spina meatus. (05 Mar 2000) |
| spina trochlearis | A spicule of bone arising from the edge of the trochlear fovea, giving attachment to the pulley of the superior oblique muscle of the eyeball. Synonym: spina trochlearis. (05 Mar 2000) |
| spina tympanica major | The anterior edge of the tympanic notch (of Rivinus). Synonym: spina tympanica major. (05 Mar 2000) |
| spina tympanica minor | The posterior edge of the tympanic notch (of Rivinus). Synonym: spina tympanica minor. (05 Mar 2000) |
| spina ventosa | A condition occasionally seen in tuberculosis or tuberculous dactylitis, in which there is absorption of bone bordering the medulla, with a new deposit under the periosteum, resulting in a change that is suggestive of bone being inflated with gas. (05 Mar 2000) |
| anterior part of anterior commissure of brain | The anterior part of the anterior or rostral commissure of the brain. Synonym: pars anterior commissurae rostralis, pars anterior commissurae anterioris cerebri. (05 Mar 2000) |
| acute anterior poliomyelitis | Inflammation of the anterior cornua of the spinal cord; an acute infectious disease caused by the poliomyelitis virus and marked by fever, pains, and gastroenteric disturbances, followed by a flaccid paralysis of one or more muscular groups, and later by atrophy. Synonym: acute atrophic paralysis, myogenic paralysis. (05 Mar 2000) |
| alpha cells of anterior lobe of hypophysis | Acidophil cell's that constitute about 35% of the cell's of the anterior lobe. There are two varieties: one that elaborates somatotropin, another that elaborates prolactin. (05 Mar 2000) |
| anterior | <anatomy> Toward the front or in front of. (27 Sep 1997) |
| anterior ampullar nerve | <anatomy, nerve> A branch of the utriculoampullar nerve that supplies the crista ampullaris of the anterior saemicircular duct. Synonym: nervus ampullaris anterior. (05 Mar 2000) |
| anterior antebrachial nerve | <anatomy, nerve> A branch of the median arising in elbow region, running on interosseous membrane, supplying the flexor pollicis longus, part of flexor digitorum profundus and the pronator quadratus muscles, as well as radiocarpal and intercarpal joints. Synonym: nervus interosseus anterior, ramus profundus nervi radialis, nervus antebrachii anterior, anterior antebrachial nerve, volar interosseous nerve. (05 Mar 2000) |
| anterior antebrachial region | The area between the radial and ulnar borders of the forearm anteriorly. Synonym: facies antebrachialis anterior, regio antebrachialis anterior, anterior antebrachial region, anterior surface of forearm, facies anterior antebrachii. (05 Mar 2000) |