BLOOD VESSELS

Question 1

form a closed vascular system that transports blood to the tissues and back to the heart

Answer 1

blood vessels

Question 2

carry blood away from the heart

Answer 2

arteries and arterioles

Question 3

return blood toward the heart

Answer 3

venules and veins

Question 4

play a role in exchange of substances between tissues and blood

Answer 4

capillaries

Question 5

the walls of blood vessels that have three layers

Answer 5

tunics

Question 6

friction reducing lining made up of squamous epithelium and loose connective tissue

Answer 6

tunica intima

Question 7

composed of smooth muscle and elastic fibers that allows blood vessels to vasoconstrict or vasodilate

Answer 7

tunica media

Question 8

form protective outermost covering made of fibrous connective tissue

Answer 8

tunica externa

Question 9

Which has thicker and larger tunica media, arteries or veins?

Answer 9

arteries

Question 10

vessel that directly connects the arteriole to venule

Answer 10

vascular shunt

Question 11

actual exchange vessels

Answer 11

true capillaries

Question 12

blood flow through a capillary bed

Answer 12

microcirculation

Question 13

guards the capillary bed and acts as a valve that regulate the flow of blood in the capillary

Answer 13

precapillary sphincters

Question 14

When the sphincters are closed, blood flows through the ___

Answer 14

vascular shunt

Question 15

measurement of arterial pulse, blood pressure, respiratory rate, and body temperature

Answer 15

vital signs

Question 16

alternate expansion and recoil of a blood vessel wall (the pressure wave) that occurs as the heart beats

Answer 16

arterial pulse

Question 17

pulse average in a healthy person

Answer 17

70-75 beats per minute at rest

Question 18

pressure the blood exerts against the inner walls of the blood vessels

Answer 18

blood pressure

Question 19

pressure in the arteries at the peak of ventricular contraction

Answer 19

systolic

Question 20

pressure when ventricles relax

Answer 20

diastolic

Question 21

is an indirect method of measuring systemic arterial blood pressure, most often in the brachial artery

Answer 21

Auscultatory method

Question 22

directly related to cardiac output and peripheral resistance

Answer 22

Arterial blood pressure

Question 23

the amount of blood pumped out of the left ventricle per minute

Answer 23

cardiac output

Question 24

the amount of friction blood encounters as it flows through vessels

Answer 24

peripheral resistance

Question 25

True or false: Heat has a vasoconstricting effect

Answer 25

False. Heat has a vasodilating effect while cold has a vasoconstricting effect

Question 26

low systolic, warning sign for circulatory shock

Answer 26

hypotension

Question 27

elevated arterial pressure of 140/90

Answer 27

hypertension

Question 28

is found between cells; where the substances diffuse into

Answer 28

interstitial fluid

Question 29

True or false: Lipid-soluble substances can pass through plasma membranes

Answer 29

True

Question 30

an oval pore and is usually covered by a delicate membrane

Answer 30

fenestra

Question 31

draws fluid into capillaries because blood has a higher solute concentration than interstitial fluid since blood contains plasma proteins

Answer 31

Osmotic pressure

Question 32

True or false: Blood pressure is lower than osmotic pressure at the arterial end of the capillary bed

Answer 32

False. BP is high than osmotic pressure in the arterial end. And vice versa at the venous end

Question 33

carries nutrients and oxygen from maternal blood to fetal blood

Answer 33

umbilical cord

Question 34

part of the umbilical cord that carries nutrients and oxygen-rich blood to the fetus

Answer 34

umbilical vein

Question 35

part of the umbilical cord that carry wastes and carbon dioxide rich blood from the fetus to placenta

Answer 35

umbilical arteries

Question 36

connects aorta and pulmonary trunk

Answer 36

Ductus arteriosus