vena

vena /ve·na/ (ve´nah) pl. ve´nae   [L.] vein.

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v. ca´va infe´rior  inferior vena cava: the venous trunk for the lower extremities and the pelvic and abdominal viscera; it begins at the level of the fifth lumbar vertebra by union of the common iliac veins, passes upward on the right of the aorta, and empties into the right atrium of the heart.

v. ca´va supe´rior  superior vena cava: the venous trunk draining blood from the head, neck, upper extremities, and chest; it begins by union of the two brachiocephalic veins, passes directly downward, and empties into the right atrium of the heart.

ve´nae vaso´rum  small veins that return blood from the tissues making up the walls of the blood vessels themselves.

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ve·na (vn)

n. pl. ve·nae (-n)

A vein.

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vena [ve´nah] (pl. ve´nae) (L.)

vein (see also Appendix 2-6).

vena ca´va the inferior vena cava and superior vena cava considered as a unit. See Appendix 2-6.

inferior vena cava the venous trunk for the lower extremities and the pelvic and abdominal viscera; it empties into the right atrium of the heart. See Appendix 2-6.

superior vena cava the venous trunk draining blood from the head, neck, upper extremities, and chest; it empties into the right atrium of the heart. See Appendix 2-6.

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vena

pl. venae [L.] vein. See also Table 15.

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caudal vena caval syndrome

see caudal vena caval thrombosis.

vena cava

one of the large vessels emptying venous blood into the right atrium; includes cranial and caudal venae cavae.

vena cava spontaneous rupture

recorded as a cause of sudden death in horses.

vena cava thrombophlebitis

due usually to spread from a hepatic abscess; a common precursor to vena caval syndrome.

vena caval hiatus

see vena cava foramen.

vena caval syndrome

see caval syndrome.

persistent left cranial vena cava

an uncommon anomaly in dogs, often associated with other vascular anomalies such as persistent right aortic arch and tetralogy of Fallot.

posterior vena cava

caudal vena cava.

cranial vena caval venipuncture

a technique for blood sample collection in pigs; a needle is inserted into the cranial vena cava near the thoracic inlet.

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Patient discussion about vena.

Q. I drink liquor a lot maybe 4x a week and I love drinking but after a couple days my veins star to hurt...Y? It runs in the familly alcohol and bud but I wish I could go a whole year withought poppin bottles.. what will be perscibed to a alki?

A. your veins start to hurt cause you drink to much so try cutting off a little bit and see how it turns out

Q. Are long flights dangerous? I'm flying next week to my vacation, and the flight is going to be rather long (almost 16 hours non-stop). Several years ago, my 75 years-old aunt had blood clot in her lung after a flight of similar length. I also heard that during flight the blood in the legs clots and that it can cause after that problems with the lungs and breathing. Does this mean it's dangerous for me to fly? Should I change my ticket to shorter connection flights?

A. Long flights, especially when seating in crowded cabins without moving the legs for long periods can cause the blood in you legs to clot and after that to move to your lungs and damage them. You may try to move your legs during the flights (like getting up and walking a little etc.) This video has some suggestions:
http://youtube.com/watch?v=_mte4WsVZUk