| collateral | <anatomy> Situated side by side, adjacent and on the same radius of an axis. (09 Oct 1997) |
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| collateral artery | <anatomy, artery> One that runs parallel with a nerve or other structure, one through which a collateral circulation is established. See: articular vascular network. (05 Mar 2000) |
| collateral branches of posterior intercostal arteries 3-11 | Branch arising near angle of rib and descending to run along superior border of rib below; distribution: lower half of intercostal spaces 3-11; anastomoses: collateral branches of anterior intercostal arteries. Synonym: ramus collateralis arteriarum intercostalium posteriorum III-XI. (05 Mar 2000) |
| collateral circulation | Compensatory circulation carried on through secondary channels after obstruction of the principal vessel supplying the part. (12 Dec 1998) |
| collateral digital artery | <anatomy, artery> Terminal branches of the common palmar digital artery that pass to the side of each finger. Synonym: arteria digitalis palmaris propria, collateral digital artery, digital collateral artery. (05 Mar 2000) |
| collateral eminence | A longitudinal elevation of the floor of the collateral trigone of the lateral ventricle of the brain, between the hippocampus and the calcar avis, caused by the proximity of the floor of the collateral fissure. Synonym: eminentia collateralis. (05 Mar 2000) |
| collateral fissure | A long, deep sagittal fissure on the undersurface of the temporal lobe, marking the border between the fusiform gyrus laterally and the hippocampal and lingual gyri medially; the great depth of the collateral sulcus results in a bulging of the floor of the occipital and temporal horn of the lateral ventricle, the collateral eminence. Synonym: sulcus collateralis, sulcus occipitotemporalis, collateral fissure, fissura collateralis, occipitotemporal sulcus. (05 Mar 2000) |
| collateral inheritance | The appearance of characters in collateral members of a family group, as when an uncle and a niece show the same character inherited from a common ancestor; in recessive characters it may appear irregularly, in contrast to dominant characters transmitted directly from one generation to the next. (05 Mar 2000) |
| collateral ligament | <anatomy> One of a number of ligaments on either side of, and serving as a radius of movement of, a joint having a hingelike movement; they occur at the following joints: elbow, knee, wrist, and the metacarpo-or metatarsophalangeal, proximal interphalangeal, and distal interphalangeal joints of the hands and feet. Synonym: ligamentum collaterale. (05 Mar 2000) |
| collateral ligaments | A number of ligaments on either side of, and serving as a radius of movement of, a joint having a hingelike movement. They occur at the elbow, knee, wrist, metacarpo- and metatarsophalangeal, proximal interphalangeal, and distal interphalangeal joints of the hands and feet. (12 Dec 1998) |
| collateral sulcus | A long, deep sagittal fissure on the undersurface of the temporal lobe, marking the border between the fusiform gyrus laterally and the hippocampal and lingual gyri medially; the great depth of the collateral sulcus results in a bulging of the floor of the occipital and temporal horn of the lateral ventricle, the collateral eminence. Synonym: sulcus collateralis, sulcus occipitotemporalis, collateral fissure, fissura collateralis, occipitotemporal sulcus. (05 Mar 2000) |
| collateral trigone | A triangular prominence of the floor of the lateral ventricle at the transition between occipital and temporal horn, continuous rostrally with the collateral eminence and, like the latter, caused by the deep penetration of the collateral sulcus from the ventral surface of the temporal lobe. Synonym: trigonum collaterale, trigone of lateral ventricle, trigonum ventriculi, ventricular trigone. (05 Mar 2000) |
| collateral vessel | A branch of an artery running parallel with the parent trunk, a vessel that runs in parallel with another vessel, nerve, or other long structure. Synonym: vas collaterale. (05 Mar 2000) |
| radial collateral artery | <anatomy, artery> The anterior terminal branch of the profunda brachii, anastomosing with the radial recurrent, forming part of the articular network of the elbow. Synonym: arteria collateralis radialis. (05 Mar 2000) |
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| radial collateral ligament | The ligament that connects the lateral epicondyle of the humerus with the annular ligament of the radius. Synonym: ligamentum collaterale radiale, lateral ligament of elbow, radial collateral ligament. (05 Mar 2000) |
| radial collateral ligament of elbow | The ligament that connects the lateral epicondyle of the humerus with the annular ligament of the radius. Synonym: ligamentum collaterale radiale, lateral ligament of elbow, radial collateral ligament. (05 Mar 2000) |
| radial collateral ligament of wrist | The ligament that extends distally from the styloid process of the radius to the carpal bones. Synonym: ligamentum collaterale carpi radiale, external collateral ligament of wrist, lateral ligament of wrist. (05 Mar 2000) |
| medial collateral | <anatomy> A strong ligament which connects the femur to the tibia, stabilising the inner aspect of the knee joint. (27 Sep 1997) |
| medial collateral ligament, knee | A broad, flat, longitudinal band on the medial side of the knee joint. It is attached superiorly to the medial epicondyle of the femur, inferiorly to the medial surface of the body of the tibia, and in between to the medial meniscus. It is a frequent site of injury, particularly rupture and tear. (12 Dec 1998) |
| medial collateral ligament of elbow | The triangular ligament extending from the medial epicondyle of the humerus to the medial side of the coronoid process and olecranon of the ulna. Synonym: ligamentum collaterale ulnare, medial collateral ligament of elbow, ulnar collateral ligament. (05 Mar 2000) |
| middle collateral artery | <anatomy, artery> The posterior terminal branch of the profunda brachii, anastomosing with the arteries which form the articular network of the elbow. Synonym: arteria collateralis media. (05 Mar 2000) |
| superior ulnar collateral artery | <anatomy, artery> Origin, brachial; distribution, elbow joint; anastomoses, posterior ulnar recurrent and inferior ulnar collateral, as part of the articular vascular network of the elbow. Synonym: arteria collateralis ulnaris superior. (05 Mar 2000) |
| digital collateral artery | <anatomy, artery> Terminal branches of the common palmar digital artery that pass to the side of each finger. Synonym: arteria digitalis palmaris propria, collateral digital artery, digital collateral artery. (05 Mar 2000) |
| inferior ulnar collateral artery | <anatomy, artery> Origin, brachial; distribution, arm muscles at back of elbow; anastomoses, anterior and posterior ulnar recurrent, superior ulnar collateral, profunda brachii, and recurrent interosseous, as part of the articular network of the elbow. Synonym: arteria collateralis ulnaris inferior, arteria anastomotica magna, great anastomotic artery. (05 Mar 2000) |
| internal collateral ligament of the wrist | A ligament that passes from the styloid process of the ulna to the pisiform and triquetrum. Synonym: ligamentum collaterale carpi ulnare, internal collateral ligament of the wrist, medial ligament of wrist. (05 Mar 2000) |
| tibial collateral ligament | <anatomy> The broad fibrous band that passes from the medial epicondyle of the femur to the medial margin and medial surface of the tibia; the medial meniscus is attached to its deep surface; it is continuous with (a thickening of) the fibrous capsule of the knee joint. Synonym: ligamentum collaterale tibiale, medial ligament of knee. (05 Mar 2000) |
| external collateral ligament of wrist | The ligament that extends distally from the styloid process of the radius to the carpal bones. Synonym: ligamentum collaterale carpi radiale, external collateral ligament of wrist, lateral ligament of wrist. (05 Mar 2000) |
| ulnar collateral ligament | The triangular ligament extending from the medial epicondyle of the humerus to the medial side of the coronoid process and olecranon of the ulna. Synonym: ligamentum collaterale ulnare, medial collateral ligament of elbow, ulnar collateral ligament. (05 Mar 2000) |