| 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) |
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| 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) |
| 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) |
| acromial articular surface of clavicle | A small oval facet on the lateral end of the clavicle for articulation with the acromion. Synonym: facies articularis acromialis claviculae, acromial articular facies of clavicle. (05 Mar 2000) |
| anterior part of diaphragmatic surface of liver | The part of the diaphragmatic surface of the liver deep to the costal arches and the xiphoid process. Synonym: pars anterior faciei diaphragmatis hepatis. (05 Mar 2000) |
| anterior surface | The surface of a structure or part of the body that faces forward. Synonym: facies anterior. (05 Mar 2000) |
| anterior surface of cornea | The external surface of the cornea. Synonym: facies anterior corneae. (05 Mar 2000) |
| anterior surface of elbow | The area in front of the elbow, including the cubital fossa. Synonym: facies cubitalis anterior, regio cubitalis anterior, anterior cubital region, anterior surface of elbow. (05 Mar 2000) |
| anterior surface of eyelids | anterior surface of eyelids |
| anterior surface of forearm | Synonym: anterior region of forearm. (05 Mar 2000) |
| anterior surface of iris | The anterior surface of the iris of the eye. Synonym: facies anterior iridis. (05 Mar 2000) |
| anterior surface of kidney | The anterior surface of the kidney. Synonym: facies anterior renis. (05 Mar 2000) |
| anterior surface of lens | The anterior surface of the lens of the eye. Synonym: facies anterior lentis. (05 Mar 2000) |