Anatomy Chapter 11 (part three)

The path of blood flow within the systemic vascular system is ________.

arteries, arterioles, capillary beds, venules, veins

T or F? Arteries branch into smaller vessels known as arterioles.

True

T or F? Exchanges between blood and tissue cells occur in capillary beds.

True.

The largest artery in the body is the ________.

aorta

Which type of vessel has a thick tunica media?

artery

Which type of vessel is constructed only from tunica intima?

capillaries

The flow of blood through a capillary bed is called ________.

microcirculation

Veins ________.

often have valves to prevent the backflow of blood

Arteries are normally depicted as red while veins are colored blue. The exceptions to this rule are the ________ arteries and veins.

pulmonary

T or F? Capillaries are composed only of tunica intima.

true

T or F? When precapillary sphincters are closed, blood flows through the shunts and bypasses the tissue cells.

true...

The correct sequence of layers of a typical blood vessel, from superficial to deep, are ________.

tunica externa, tunica media, tunica intima

Which of these layers is found in capillary walls?

tunica intima

Large veins have ________ to prevent the backflow of blood.

valves

Capillary beds are drained by vessels known as ________.

venules

What is the effect of parasympathetic nervous system control on the vascular system?

little to no effect

Tunica ________, the middle layer of a typical blood vessel, contains smooth muscle and elastic fibers.

media