chapter 22 Carvascular; vessels and circulation

Question 1

what are the three layers of the arteries and vein walls?

Answer 1

tunica intima, tunica media, tunica externa

Question 2

tunica intima is the

Answer 2

innermost layer of a blood vessel

Question 3

tunica media is that

Answer 3

middle layer and contains smooth muscle tissue in a framework of loose connective tissue

Question 4

the tunica externa is the

Answer 4

outer most layer that forms a connective sheath around the vessel

Question 5

what are muscular arteries?

Answer 5

transport blood to the bodys skeletal muscle and internal organs

Question 6

what are arterioles?

Answer 6

smaller than muscular arteries and control the blood flow between arteries and capillaries

Question 7

what are capillaries?

Answer 7

smallest and most delicate blood vessels

Question 8

why are capillaries important?

Answer 8

bc they are the only blood vesseld whose walls permit exchange between the blood and the surrounding interestial fluid

Question 9

what are the three types of capillaries?

Answer 9

continuous, fenestrated and sinusoids

Question 10

continuous capillaries

Answer 10

found in most regions of the body

Question 11

fenestrated capillaries

Answer 11

capillaries that contain “windows” in their walls found in kidneys

Question 12

Sinusoids

Answer 12

resemble fenestrated capillaries except they have larger pores and a thinner basal lining. found in the liver, bone marrow and adrenal glands

Question 13

what are venules?

Answer 13

the smallest veins, collect blood from capillaries

Question 14

what are venous valves?

Answer 14

one way valves that are formed from infoldings of the tunica intima