VEIN

n. Van. Gr., 0An/<. Lat., vena. Fr., veine. Ger., Ader, Blutader, Vene. 1. A ve el the function of which is to convey blood toward the heart, [a, 48.] 2. A rib or nervure of an insect's wing. [L, 206 (a, 27).] 3. A distinct thread-like structure in a plant organ, especially one of a group of branching threads, [a, 35, 48.] Acce ory portal v's. Of Sappey, small v's from the areolar ti ue and peritoneal folds around the liver, emptying into the portal v. [C.] Acromio-thoracic v. A v. accompanying the artery of like name, and emptying into the axillary v. [C.] Adipose v's. Lat.,adtposce vence. Ger., Fettvenen. Branches of the emulgent v's arising in the fat around the kidneys. [A, 343.] Alar thoracic v. A branch of the axillary v. accompanying the alar thoracic artery. [C.] Anastomotic v. of Trolard. See VENA com muni cans magna. Angular v. A v. formed by the union of the supra-orbital, frontal, superior palpebral, and nasal v's, emptying into the facial v. [C.] Annular v. See VENA metacarpea ulnar is. Anterior auricular v. A small emptying into the y. temporo-maxillary v. [F.] Anterior cardiac v's. Lat., vence cord is minores. Ger., vordere Kranzblutadern des Herzens. Two or three v's on the front of the right auricle and the right border of the heart, emptying separately into the auricle. [C.] Anterior ciliary v's. Ger., vordere Blendungsblutadern. V's accompanying the anterior ciliary arteries which empty into the ophthalmic v. [L.] Anterior cutaneous v. of the neck. See Anterior jugular v. Anterior ethmoidal v. A v. accompanying the anterior ethmoidal artery, and emptying into the ophthalmic v. [C.] Anterior facial v. See Facial v. Anterior intercostal v's. Small offshoots of the internal mammary v. which accompany the arteries of like name. [L.] Anterior internal maxillary v. See Deep facial v. Anterior jugular v. Ger., vordere oberfldchliche Halsvene. A v. formed by branches from the submaxiljary region, the lower lip, and the chin, and ending in the external jugular v. or in the subclavian v. [C.] Anterior longitudinal spinal v's. Lat., venae spinales longitudinales. Two plexiform v's which extend along the whole spinal canal in front of the cord and connect above with the basilar sinus. [C.] Anterior mediastinal v's. Lat., vence mediastince anteriores. Branches of the innominate v. from the anterior mediastinal space. [L, 332.] Anterior temporal v. A v. running from the diploe of the frontal and temporal bones, and emptying into one of the branches of the temporal v. [L.] Anterior tibial v. Lat., vena poplitea anterior. A y. corresponding to the artery of like name; it empties into the popliteal v. [C.] Anterior ulnar cutaneous v. A v. which ascends from the anterior surface of the wrist and unites below the bend of the elbow with the posterior ulnar cutaneous v. to form the common ulnar cutaneous v. [L.] Anterior ulnar v. A v. which returns the blood from the dorsal plexus of the hand to the posterior ulnar v. or the median basilic v. [C.] Anterior vertebral v. Lat., vena cervical is ascendens. A v. arising from a plexus over the cervical vertebrae, receiving branches from the pre vertebral and scaleni muscles, and emptying into the inferior end of the vertebral v. [C.] Anterior vitelline v. Lat., vena vitellin a anterior, vena omphalomesenterica anterior. Ger., vordere Dottervene. The v. (often two v's) by which the sinus terminal is of the primitive embryonic circulation empties into the posterior vitelline v. [A, 8.] Articular v. A y. that returns blood from the structures of a joint, [a, 34.] Ascending cervical v. See Anterior vertebral v. Ascending lumbar v. A v. formed by a series of vertical communications between the lumbar v's, and also connecting the lateral sacral, ilio-lumbar, and common iliac v's. It empties into the azygous v. of its side. [C.] Auditory y's, Auricular v's. Ger., Gehorblutadern. See VEN^E auditories internee and Deep auricular v's. Axillary v. Lat., vena axillar is. Ger., Achselvene. A v. that returns the blood from the arm. It is a continuation of the basilic v., and extends from the lower border of the teres major muscle to the outer margin of the first rib. It receives the brachial, cephalic, circumflex, subscapular, long thoracic, acromio-thoracic, and superior thoracic v's. [C.] Azygous v. See Large azygous v., Left upper azygous v., and Small azygous v. Basilar v. Lat., vena basilar is. A branch of the v. of Galen from the chorioid plexus and the base of the brain in the vicinity of the inner side of the crus eerebri. [C; L.] Basilic v. Ger., Ellenbogenhauptblutader. A v. formed by the union of the median basilic and posterior ulnar cutaneous v's; continuous with the axillary v. [C.] Bas i vertebral v's. Ger., Wirbelkieferblutadern. Small v's, reduced to their intima, which ramify in the bodies of the vertebras and empty into the anterior longitudinal spinal v's. [L, 332.] Brachial v's. V's, one on each side of the brachial artery, which follow its branches and empty into the axillary v. at the lower border of the subscapular is. [L.] Brachio-cephalic v. See /TIO, no; O", not; O, whole; Th, thin; Th the; U, like oo in [s. 693]