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Why does the veins constrict and dilate during exercise?
Almost all the veins and arteries constrict and dilate during heavy exercise. Even capillaries bring a flush to the face and skin by dilation.
The Spleen is composed of this material that also surrounds veins and arteries?
Lymph tissue
Are veins or arteries more superficial in the body?
Veins tend to be more superficial, meaning they lie closer to the surface of the skin. Arteries usually, but not always, run deeper in the tissue than veins.
Which of the following is a difference between arteries and veins?
artery walls have more elastic tissue and smooth muscle than veins,
Embedded in tissue what smallest type of blood vessel connect arteries and veins?
Capillaries
What type of tissue is found in the walls of the arteries that leave the heart but not in the walls of the large veins that enter the heart?
elastic tissue
What is the different between viens and arteries?
Veins take blood to the heart, while arteries take blood away from the heart. Also, veins have valves that don't allow backflow because their wall contains almost no smooth muscle to pump the blood - they cannot constrict and dilate on their own. Veins rely on the body's muscular movement to move the blood contained in them. Arteries, however, can constrict or dilate to diver blood flow to different parts of the body and to keep blood pressure relatively constant. They have a large smooth muscle component in their walls.
Name three blood vessels?
the three blood vessels are the Veins capillaries Arteries the arteries.
What is the function of the coronary arteries and veins in fetal pigs?
carries blood to heart tissue riched with O2
Why can veins develop problems?
Veins are more likely than arteries to expand or dilate if blood volume or pressure increases, because they consist of only one layer of tissue; this is in contrast to arteries, in which there are three layers.
What do arteries and veins drain?
Arteries drain (pump blood) into veins. Veins drain into your lungs and heart to be re-oxygenated. (This is not true for veins and arteries to and from your lungs.)
Contrast the structure of veins and arteries for thickness of muscle and elastic tissue?
The more pressure it uses, the thicker the walls will be. Veins have very low pressure which means they have thin walls and vice/versa for arteries which have a higher pressure and thicker walls than veins.
