4.3.2

Question 1

what are the 3 structural types

Answer 1

continuous, fenestrate, sinusoidal

Question 2

which part of the body is there no continous capillaries

muscles

skin

kidney

lungs

cns

Answer 2

kidney

Question 3

job of pinocytocic vesciles

Answer 3

carry fluid across endothelial cells

Question 4

what is the difference between the BBB and the rest of the body

Answer 4

BBB have tight junctions all around unlike rest of body which has some tight junctions and some intracelullar clefts

Question 5

what are the most common structural type of capillaries

Answer 5

continous capillaries

Question 6

why are fenestrated capillaries called little windows

Answer 6

permeable for small solutes and fluids

Question 7

function of fenestrated capillaries

Answer 7

absorptiona d filtrate formations

Question 8

where are fenestrated capillaries found

small intestines

heart

endocrine glands

CNS

kidneys

Answer 8

SI, Endo glands, Kidneys

Question 9

characterstics of sinusdoidal capillaries

Answer 9

fewer tight junctions, large irrugular lumens, large intracellular clefts, usually fenestrtated

Question 10

where is sinusodial capilaries commonly found

Answer 10

liver, bone, spleen, lumphoid tissues, endocrine glands

Question 11

what are the two types of capilarie beds

Answer 11

shunt and true capillaries

Question 12

directly connects the terminal rteriole and a postcapillary venule

vascular shunt or true capillaries

Answer 12

vascular shunt

Question 13

10-100 exchange vessels per capillary bed

branch off the metarteriole or terminal arteriole

vascular shunt or true capillaries

Answer 13

true capillaries

Question 14

what stops blood from going through the capillaries bed in true capillaries?

Answer 14

precapillary sphincters

Question 15

what stops blood from going through the capillaries bed in vascular shunt

Answer 15

vasconstriction of arteriole

Question 16

when are veins formed

Answer 16

when venules converge

Question 17

compared to arteries veins have _____ lumens and _______ walls

larger;thicker

smaller; thinner

larger;thinner

Answer 17

larger;thinner

Question 18

blood pressure is lower in arteries than veins

T/F

Answer 18

F

Question 19

veins have a thick/thin tunica media and a thick/thin thunica externa consisting of collagen ibers and elsatic networks

Answer 19

thin tunica media and thick tunica externa

Question 20

% of blood volume in veins? capilaries? pulmonary blood vessel? systemic arteria and arterioles?

Answer 20

60-65%

5%

12%

15%