| ACD | absolute cardiac dullness; absolute claudication distance; acid-citrate-dextrose [solution]; actinom... |
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| ACF | accessory clinical findings; acute care facility; anterior cervical fusion; area correction factor; ... |
| AChA | anterior choroidal artery |
| ACL | Achievement Check List; acromegaloid features, cutis verticis gyrata, corneal leukoma [syndrome]; an... |
| ACLR | anterior capsulolabral reconstruction |
| 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) |
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| 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) |
| anterior aphasia | A type of aphasia in which there is a deficit in speech production or language output, often accompanied by a deficit in communicating by writing, signs, etc. The patient is aware of his impairment. Synonym: anterior aphasia, ataxic aphasia, Broca's aphasia, expressive aphasia, nonfluent aphasia. (05 Mar 2000) |
| anterior arch of atlas | An arch that connects the lateral masses of the atlas anteriorly and articulates with the anterior articular facet of the dens of the axis. Synonym: arcus anterior atlantis. (05 Mar 2000) |
| anterior asynclitism | Inclination of the foetal head in cases of flat pelvis, so that the biparietal diameter is oblique in relation to the plane of the pelvic brim, the anterior parietal bone presenting to the parturient canal. Synonym: anterior asynclitism. (05 Mar 2000) |
| anterior auricular | <anatomy, muscle> Origin, galea aponeurotica; insertion, cartilage of auricle; action, draws pinna of ear upward and forward; nerve supply, facial. Considered by some to be the anterior part of the temporoparietal muscle. Synonym: musculus auricularis anterior, musculus attrahens aurem, musculus attrahens auriculam, zygomaticoauricularis. (05 Mar 2000) |
| anterior auricular branches of superficial temporal artery | <anatomy, artery> Distribution, auricle, earlobe and external acoustic meatus. Synonym: rami auriculares anteriores arteriae temporalis superficialis. (05 Mar 2000) |
| anterior auricular groove | A notch between the supratragic tubercle and the crus of the helix. Synonym: incisura anterior auris, anterior auricular groove, auricular notch, sulcus auriculae anterior. (05 Mar 2000) |
| anterior auricular nerves | Branches of the auriculotemporal nerve that supply the tragus and upper part of the auricle. Synonym: nervi auriculares anteriores. (05 Mar 2000) |
| anterior auricular vein | <anatomy, vein> One of several veins draining the auricle and acoustic meatus and emptying into the retromandibular vein. Synonym: vena auricularis anterior, vena preauricularis. (05 Mar 2000) |
| anterior axillary fold | Bounds axilla anteriorly; formed by skin and fascia overlying inferior border of pectoralis major muscle. (05 Mar 2000) |
| anterior axillary line | A vertical line extending inferiorly from the anterior axillary fold. Synonym: linea axillaris anterior, linea preaxillaris, preaxillary line. (05 Mar 2000) |
| anterior basal branch | Anterior basal branch of basal parts of the inferior lobar branches of the right and left pulmonary arteries, and superior basal branches of the right and left inferior pulmonary veins. Synonym: ramus basalis anterior. (05 Mar 2000) |
| anterior basal segment | Anterior basal segment of inferior lobe of right and left lung; lies between middle lobe and diaphragm. Synonym: segmentum basale anterius. (05 Mar 2000) |
| anterior belly of digastric muscle | <anatomy> The portion of the digastric muscle which extends anteriorly from the intermediate tendon, and attaches to the posterior aspect of the mandible. Synonym: venter anterior musculi digastrici. (05 Mar 2000) |