| LADA | laboratory animal dander allergy; left acromio-dorso-anterior [position]; left anterior descending a... |
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| OA | obstructive apnea; occipital artery; occipito-anterior; occiput anterior; octanoic acid; ocular albi... |
| Sa | the most anterior point of the anterior contour of the sella turcica [point]; saline; Staphylococcus... |
| ACA | Anterior Cerebral Artery |
| A-COM | Anterior COMmunicating artery |
| tarsal cartilage | Incorrect term sometimes applied to the inferior tarsus and superior tarsus. See: tarsus. (05 Mar 2000) |
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| tarsal coalition | <radiology> Abnormal fusion of one or more tarsal bones, aetiology: congenital, infection, trauma, articular disorders, surgery, age: 20-30's, symptoms: pain upon standing or with prolonged activity types:, calcaneonavicular most common, seen on 45 degree medial oblique view, talocalcaneal usually b/w talus and sustentaculum tali, talar beaking, talar broadening, narrowing of posterior subtalar joint, ball-and-socket ankle joint, talonavicular uncommon, calcaneocuboid very rare (12 Dec 1998) |
| tarsal cyst | Also called a Meibomian cyst or a chalazian. A tarsal cyst is an inflammation of the oil gland of the eyelid. (12 Dec 1998) |
| tarsal fold | The fold marking the attachment of the levator palpebrae superioris muscle into the skin of the upper eyelid. (05 Mar 2000) |
| tarsal glands | Sebaceous glands embedded in the tarsal plate of each eyelid, discharging at the edge of the lid near the posterior border. Their secretions create a lipid barrier along the margin of the eyelids which contains the normal secretions in the conjunctival sac by preventing the watery fluid from spilling over the barrier when the eye is open. Synonym: glandulae tarsales, meibomian glands, palpebral glands. (05 Mar 2000) |
| tarsal joints | The synovial joints which unite the tarsal bones. Synonym: articulationes intertarseae, intertarsal articulations, tarsal joints. (05 Mar 2000) |
| tarsal ligaments | The ligaments that interconnect the tarsal bones; they are grouped into three sets: dorsal tarsal ligaments, interosseous tarsal ligaments, and plantar tarsal ligaments, and are individually named according to their attachments. Synonym: ligamenta tarsi. (05 Mar 2000) |
| tarsal plates | See: superior tarsus, inferior tarsus. (05 Mar 2000) |
| tarsal tunnel syndrome | <syndrome> Compression of the posterior tibial nerve caused by thickening of the laciniate ligament or by gouty or arthritic deposits around the ankle joint leading to symptoms of pain or paresthesia over the sole of the foot. (12 Dec 1998) |
| transverse tarsal articulation | The synovial joints between the talus and navicular bone medially and the calcaneus and navicular bones laterally which act as a unit in allowing the front of the foot to pivot relative to the back of the foot about the longitudinal axis of the foot, contributing to the total inversion and eversion movements. Synonym: articulatio tarsi transversa, Chopart's joint, midtarsal joint, transverse tarsal articulation. (05 Mar 2000) |
| transverse tarsal joint | The synovial joints between the talus and navicular bone medially and the calcaneus and navicular bones laterally which act as a unit in allowing the front of the foot to pivot relative to the back of the foot about the longitudinal axis of the foot, contributing to the total inversion and eversion movements. Synonym: articulatio tarsi transversa, Chopart's joint, midtarsal joint, transverse tarsal articulation. (05 Mar 2000) |
| lateral tarsal artery | <anatomy, artery> Origin, dorsalis pedis; distribution, tarsal joints and extensor digitorum brevis muscle; anastomoses, arcuate, peroneal, lateral plantar, anterior lateral malleolar. Synonym: arteria tarsea lateralis. (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) |