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Veins

Biology VectorsVena cava

The Veins of the Thorax (Fig. 577)
The innominate veins (vv. anonymæ; brachiocephalic veins) are two large trunks, placed one on either side of the root of the neck, ...

 


veins Thin-walled vessels that carry blood to the heart. Units of the circulatory system that carry blood to the heart.

Veins of the torso Coronary
coronary sinus (great cardiac, left marginal, small cardiac, middle cardiac, posterior of the left ventricle, oblique of the left atrium) - anterior cardiac (right marginal) - pulmonary
Thorax/
SVC ...

veins
Vessels which carry blood back to the heart from the tissues. Veins are thin walled and will collapse if empty. They have a series of one-way valves to prevent blood from flowing backwards.

leaf veins Vascular tissue in leaves, arranged in a net-like network (reticulate vennation) in dicots, and running parallel (parallel vennation) to each other in monocots.

Leaf Veins
Not only must the cells of the palisade and spongy layers be close to their air supply
to secure CO2 and
release O2
(and the reverse in the dark)
but they must be close to a leaf vein with its ...

Leaf veins -- In monocots, there are usually a number of major leaf veins which run parallel the length of the leaf; in dicots, there are usually numerous auxillary veins which reticulate between the major ones.

veins Blood vessels conducting blood toward the heart in any animal. Also more heavily sclerotized portions of wings of insects, which are remains of lacunae.
velarium Shelf-like extension of the subumbrella edge in cubozoans (phylum Cnidaria).

Netlike veins in the leaves
flower parts are usually in fours or fives
a ring of primary vascular bundles in the stem ...

pertaining to veins
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
...

If you think of a red blood cell going through your veins and arteries and capillaries as a water balloon, ...

Some vessels lead away from the heart (arteries) and some toward the heart (veins). The arteries have thicker walls than the veins. The veins can be distinguished from arteries by the fact that they have valves to prevent back flow of the blood.

Arteries, Capillaries, And Veins
Your arteries carry blood from your heart, out to the rest of your body. They have very thick walls, which allow them to withstand the immense pressure created as your heart pumps blood forcefully.

Each leaf trace further branches into the familiar veins that can often be seen along the surface of leaves, and the veins repeatedly subdivide as well.

skeletonize. To remove leaf tissue between the veins, leaving the network of veins intact.
soil profile. A vertical section of the soil through all its horizontal layers, extending into the parent material.

Capillaries are very small and have thin walls to allow easier passage of compounds including nutrients, glucose, carbon dioxide, and waste products. After the capillaries, your blood passes through venules and veins.

. veins in the neck and chest to improve ... its use as a treatment option for individuals ... of Interventional Radiology,s 36th Annual Scientific Meeting in ... a thin tube into a vein or artery ...

Hemorrhoids dilated or varicose veins in the anal area‚ often due to difficulty passing feces due to a low fiber diet
(hemo = blood; rheo = flow‚ current; -oid = like‚ form) ...

venation - the manner in which veins are arranged as of insects' wings (Webster)
venomous - having a poison gland or glands; able to inflict a poisonous wound by biting or stinging (Webster) ...

[Gk. kardio, heart + L. vasculum, a small vessel]
A closed circulatory system with a heart and branching network of arteries, capilleries, and veins.
carnivore ...

[L. vitellus - yolk of an egg]. The embryonic circulatory system supplying blood to the yolk sac via vitelline arteries and its return to embryo through the vitelline veins.

Articles
Adams, A. 2002. Prospecting for gold in genome gulch. The Scientist
16:36-38. Modern-day bioprospectors combine association, functional, and gene expression data to stake their claims in the rich veins of human DNA.

Photosynthesis occurs within the mesophyll cells in C3 plants, which form a dense layer on the upper surface of the leaf and a spongy layer on the lower surface. Bundle-sheath cells surrounding the veins are not photosynthetic.

vitelline circulation [L. vitellus - yolk of an egg]. The embryonic circulatory system supplying blood to the yolk sac via vitelline arteries and its return to embryo through the vitelline veins.

See also: Human, Trans, Tissue, Class, Vessels