| ARC | accelerating rate calorimetry; acquired immunodeficiency syndrome-related complex; active renin conc... |
|---|---|
| ARN | acute renal necrosis; acute retinal necrosis; arcuate nucleus; Association of Rehabilitation Nurses |
| ACL | Achievement Check List; acromegaloid features, cutis verticis gyrata, corneal leukoma [syndrome]; an... |
| ATF | activating transcription factor; anterior talofibular [ligament]; ascites tumor fluid |
| CAL | cafe au lait; calcium test; calculated average life; calories; chronic airflow limitation; computer-... |
| arcuate line of ilium | The iliac portion of the linea terminalis of the bony pelvis. Synonym: linea arcuata ossis ilii. (05 Mar 2000) |
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| arcuate line of rectus sheath | A crescentic line, not always clearly defined, which marks the lower limit of the posterior layer of the sheath of the rectus abdominis muscle. Synonym: linea arcuata vaginae musculi recti abdominis, Douglas' line, linea saemicircularis, saemicircular line. (05 Mar 2000) |
| arcuate nuclei | A variable assembly of small cell groups, probably outlying components of the pontine nuclei, on the ventral and medial aspects of the pyramid in the medulla oblongata. Synonym: nuclei arcuati. (05 Mar 2000) |
| arcuate nucleus | A nucleus located in the middle hypothalamus in the most ventral part of the third ventricle near the entrance of the infundibular recess. Its small cells are in close contact with the ependyma. (12 Dec 1998) |
| arcuate nucleus of thalamus | The small ventral region of the ventral posteromedial nucleus of thalamus in which the fibres of the gustatory lemniscus and secondary trigeminal tracts terminate; it projects to the lower part of the postcentral gyrus of the cerebral cortex. Synonym: arcuate nucleus, nucleus arcuatus thalami, nucleus arcuatus, semilunar nucleus of Flechsig, thalamic gustatory nucleus. (05 Mar 2000) |
| arcuate scotoma | A scotoma extending from the blind spot and arching into the nasal field following the lines of retinal nerve fibres. (05 Mar 2000) |
| arcuate uterus | A uterus with a depression at the fundus; an incomplete uterus bicornis. Synonym: uterus arcuatus. (05 Mar 2000) |
| arcuate veins of kidney | Veins that parallel the arcuate arteries, receive blood from interlobular veins and straight venules, and terminate in interlobar veins. Synonym: venae arcuatae renis, arciform veins of kidney. (05 Mar 2000) |
| arcuate zone | The inner third of the basilar membrane of the cochlear duct extending from the tympanic lip of the osseous spiral lamina to the outer pillar cell of the spiral organ (of Corti). Synonym: zona arcuata, zona tecta. (05 Mar 2000) |
| myometrial arcuate arteries | Branches of the uterine and ovarian artery's. (05 Mar 2000) |
| internal arcuate fibres | <anatomy> Fibres that arise in the cuneate and gracile nuclei, pass in a curving course across the midline of the medulla oblongata, and form the contralateral medial lemniscus. It also designates other fibres such as those of the olivocerebellar tract that arch through the substance of the medulla and form sensory decussation. Synonym: fibrae arcuatae internae. (05 Mar 2000) |
| external arcuate fibres | They include: 1) dorsal external arcuate fibres that arise from cells in the accessory or lateral cuneate nucleus and pass to the cerebellum; 2) ventral external arcuate fibres that arise from the arcuate nuclei at the base of the medulla oblongata and pass around the lateral surface of the medulla; both enter the cerebellum as components of the restiform portion of the inferior cerebellar peduncle. Synonym: fibrae arcuatae externae. (05 Mar 2000) |
| antebrachial flexor retinaculum | Thickening of distal antebrachial fascia just proximal to radiocarpal (wrist) joint. Continuous with extensor retinaculum at margins of forearm. This structure is distinct from the transverse carpal ligament, commonly called "the flexor retinaculum," which forms the roof of the carpal tunnel. Synonym: flexor retinaculum of forearm, palmar carpal ligament. (05 Mar 2000) |
| caudal retinaculum | Fibrous bands, remnants of the notochord, that extend from the skin to the coccyx, forming the coccygeal foveola. Synonym: retinaculum caudale, caudal ligament, ligamentum caudale. (05 Mar 2000) |
| patellar retinaculum | Extensions of the aponeuroses of the vasti medialis and lateralis muscles which pass on each side of the patella, attaching to the margins of the patella and patellar ligament anteriorly, the collateral ligaments posteriorly and the tibial condyles distally; form the anteromedial and (with the fibrous expansion of the iliotibial tract) the anteromedial portions of the fibrous capsule of the knee. See: lateral patellar retinaculum, medial patellar retinaculum. (05 Mar 2000) |