blood vessels (novak)

Question 1

vessel tunics

Answer 1

tunica intima, media, externa

Question 2

tunica interna

Answer 2

simple squamous endothemium

Question 3

tunica media

Answer 3

circularly arranged smooth muscle fibers; vasodilation and vasoconstriction

Question 4

tunica externa

Answer 4

collagen and elastic fibers

Question 5

tunics in arteries

Answer 5

thickest tunica media

Question 6

tunics in caillaries

Answer 6

only tunica intima allowing for quick gas exchange

Question 7

tunics in veins

Answer 7

thickest tunica externa, smaller tunica media than arteries, valves

Question 8

properties of elastic arteries

Answer 8

largest arteries; conducting arteries; high elastin content to stretch during heart contractions

Question 9

ex of elastic arteries

Answer 9

aorta and its major branches

Question 10

properties of muscular arteries

Answer 10

distributing arteries; thick tunica media; diameter of lumen changes to regulate blood flow to organs

Question 11

ex of muscular arteries

Answer 11

brachial, coronary, inferior mesenteric, etc

Question 12

flow of blood from artery to vein

Answer 12

elastic artery, mucular artery, arteriole, continuous/fenstrated capillaries, venule, medium vein, large vein

Question 13

arterioles

Answer 13

primary resistance vessels, diameter regulated by local tissue factors and sns

Question 14

capillaries

Answer 14

smallest vessels, endothelium only

Question 15

venules

Answer 15

smallest veins, location of diapedesis

Question 16

continuous capillary

Answer 16

most common, muscle, skin, lungs, and cns

Question 17

fenstrated capillary

Answer 17

small intestine, exocrine, kidneys

Question 18

sinusoid capillary

Answer 18

bone marrow, spleen, liver

Question 19

t/f. bp is lower in veins compared to arteries

Answer 19

true

Question 20

what are vericose veins

Answer 20

dysfunctions valves that lead to blood pooling in the superficial limb veins (hemorrhoids - vericose veins of the anorectal region)

Question 21

parts of fetal circulation

Answer 21

umbilical cord (2 umbilical arteries and 1 vein), ductus venosus, foramen ovale, ductus arteriosus

Question 22

ductus venosus

Answer 22

(takes blood from the unbilical vein to the inf vena cava, bypassing the liver)

Question 23

foramen ovale

Answer 23

diverts blod from the ra to the la, bypassing the immature lungs

Question 24

ductus arteriosus

Answer 24

ddiverts blood from the pulmonary trunk to the aortic arch, bypassing the immature lungs

Question 25

arterial blood pressure

Answer 25

100 mmHg into aorta, 35 mmHg at the start of capillaries

Question 26

capillary hydrostatic pressure

Answer 26

pressure within capillary walls; 35 mmHg at begining, 18 at end

Question 27

venous pressure

Answer 27

pressure withing the venous system; 18 mmHg to 2

Question 28

total peripheral resistance

Answer 28

vascular resistance, blood viscosity, turbulence

Question 29

vascualr resistance

Answer 29

friction between blood and vessel walls (drinking a milkshake out of a super long straw = high resistance)

Question 30

blood viscosity

Answer 30

like drinking a milkshake is more viscous than a soda; anemia decreases viscosity

Question 31

turbulence

Answer 31

creates swirls and eddies due to high flow rates, irregular surfaces, sudden changes in vessel diameter; found in atria and ventricles/ventricles and trunks/atherosclerotic plaque