| armilla | <zoology> A ring of hair or feathers on the legs. Origin: L. A bracelet. (04 Mar 1998) |
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| Armillaria mellea neutral proteinase | <enzyme> Specific for lysine Registry number: EC 3.4.99.32 (26 Jun 1999) |
| Armillifer | A genus of Pentastomida (order Porocephalida, family Porocephalidae); adults are found in the lungs of reptiles and the young in many mammals, including man. Origin: O. Fr. Armille, fr. L. Armilla, a bracelet Armillifer armillatus, species occurring in the python, the larva or nymph being occasionally found in man. Synonym: Porocephalus armillatus. (05 Mar 2000) |
| armin | <chemical> Ethyl-p-nitrophenyl ethylphosphonate. A reversible organophosphorus cholinesterase inhibitor. It also affects the presynaptic membrane and inhibits membrane postsynaptic cholinergic receptors. The compound had former use as a miotic. Pharmacological action: cholinesterase inhibitor. (12 Dec 1998) |
| armor heart | Extensive to complete calcification (rarely ossification) of the pericardium usually producing constrictive pericarditis. (05 Mar 2000) |
| armored heart | Calcareous deposits in the pericardium due to subacute or chronic pericarditis. Synonym: panzerherz. (05 Mar 2000) |
| armpit | <anatomy> The underarm area. (16 Dec 1997) |
| Armstrong, Arthur Riley | <person> Canadian physician, *1904. See: King-Armstrong unit. (05 Mar 2000) |
| Armstrong, Henry | <person> British physician. (05 Mar 2000) |
| army worm | <zoology> A lepidopterous insect, which in the larval state often travels in great multitudes from field to field, destroying grass, grain, and other crops. The common army worm of the northern United States is Leucania unipuncta. The name is often applied to other related species, as the cotton worm. The larva of a small two-winged fly (Sciara), which marches in large companies, in regular order. See Cotton worm, under Cotton. Source: Websters Dictionary (01 Mar 1998) |
| posterior region of arm | The back of arm. Synonym: facies brachialis posterior, regio brachialis posterior, posterior brachial region, posterior surface of arm. (05 Mar 2000) |
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| posterior surface of arm | The back of arm. Synonym: facies brachialis posterior, regio brachialis posterior, posterior brachial region, posterior surface of arm. (05 Mar 2000) |
| stabilizing circumferential clasp arm | An arm that is relatively rigid and embraces the height of contour of the tooth. (05 Mar 2000) |
| deep fascia of arm | The deep fascia of the arm; it is continuous proximally with the pectoral fascia and the fascia covering the deltoid; distally it is continuous with the antebrachial fascia. Synonym: fascia brachii, deep fascia of arm. (05 Mar 2000) |
| dynein arm | A structure extending clockwise from one tubule of each of the 9 doublet microtubules toward the adjacent doublet seen in the axoneme of cilia or flagella (including human sperm tails); congenital absence of dynein, reflected structurally by absence of dynein arm's, can account for symptoms seen in Kartagener's syndrome and in immotile cilia syndromes. (05 Mar 2000) |
| q arm | <cell biology> The long arm of a chromosome. All human chromosomes have 2 arms: the short (p) arm and the long (q) arms. (12 Dec 1998) |
| triceps muscle of arm | <anatomy, muscle> Origin, long or scapular head: lateral border of scapula below glenoid fossa, lateral head: lateral and posterior surface of humerus below greater tubercle, medial head: posterior surface of humerus below radial groove; insertion, olecranon of ulna; action, extends elbow; nerve supply, radial. Synonym: musculus triceps brachii, triceps muscle of arm. (05 Mar 2000) |
| upper lateral cutaneous nerve of arm | <anatomy, nerve> The terminal branch of the axillary nerve supplying the skin over the lower portion of the deltoid and for a distance below its insertion. Synonym: nervus cutaneus brachii lateralis superior, upper lateral cutaneous nerve of arm. (05 Mar 2000) |
| lateral surface of arm | The lateral surface of the arm. Synonym: facies lateralis brachii. (05 Mar 2000) |
| lower lateral cutaneous nerve of arm | <anatomy, nerve> A branch of the radial nerve supplying the skin of the lower lateral aspect of the arm; it frequently is a branch of the posterior antebrachial nerve. Synonym: nervus cutaneus brachii lateralis inferior, lower lateral cutaneous nerve of arm. (05 Mar 2000) |