Circulatory System Review

Question 1

the vessels carrying blood to & from the lungs are called the ____ loop of the circulatory system

Answer 1

pulmonary

Question 2

the vessels carrying blood to and from tissues of the body (other than the lungs) are called the ____ loops of the circulatory system

Answer 2

systemic

Question 3

in the capillaries of the lungs, the blood is exposed to ____

Answer 3

oxygen

Question 4

usually blood draining from capillaries passes through (arteries/veins) directly back to the (heart/lung)

Answer 4

veins, heart

Question 5

the chambers of the heart that receive blood from the veins are the right and left ____

Answer 5

atria

Question 6

in the systemic loop, blood drains back to the heart from the (systemic veins/pulmonary veins) into the (right/left) atrium

Answer 6

systemic, right

Question 7

in the pulmonary loop, blood drains back to the heart from the (systemic veins/pulmonary veins) into the (right/left) atrium

Answer 7

pulmonary, left

Question 8

blood passes from the right atrium through the ____ valve in to the ____ ventricle

Answer 8

tricuspid, right

Question 9

blood passes from the left atrium through the ____ valve in to the ____ ventricle

Answer 9

bicuspid, left

Question 10

the right ventricle pumps blood into the ___ loop

Answer 10

pulmonary

Question 11

the left ventricle pumps blood into the ____ loop

Answer 11

systemic

Question 12

the semilunar valves are located at the beginning of the (aorta/pulmonary trunk) and at the end of the (aorta/pulmonary trunk).

Answer 12

pulmonary trunk, aorta

Question 13

the valve btwn the right atrium and right ventricle is the ____

Answer 13

tricuspid

Question 14

the valve btwn the left atrium and left ventricle is the ___

Answer 14

bicuspid

Question 15

the atrioventricular valves have ______ at their free edges

Answer 15

chordae tendineae

Question 16

the myocardium is made up of ___ musce

Answer 16

cardiac

Question 17

the chamber of the heart w/ the thickest myocardium is the ____ ventricle

Answer 17

left

Question 18

the outer surface of the heart is covered w/ the (parietal/visceral) pericardium.

Answer 18

parietal

Question 19

the sinoatrial node is called the pacemaker bc it is normally the first part of the heart to ____

Answer 19

depolarize

Question 20

the depolarization of the 5-A node causes the contraction of the (atria/ventricle)

Answer 20

atria

Question 21

the AV node is connected to the (AV bundle/Purkinjie Fibers)

Answer 21

AV bundle

Question 22

the AV bundle leads the depolarization into the ____ of the heart along the purkinjie fibers

Answer 22

ventricles

Question 23

the 1st part of the ventricles to depolarize is the (apex/ventricular septum), then the (apex/ventricular septum)

Answer 23

Ventricular septum, apex

Question 24

then the depolarization continues back toward the (papillary muscles/ purkinjie fibers)

Answer 24

papillary muscles

Question 25

this means the ventricles contract from the (apex up, valves down)

Answer 25

apex up

Question 26

during diastole the myocardium is relaxed. This allows blood to flow into the heart from the (systemic and pulmonary veins/arteries). the semilunar valves are ___. this means the pressure in the aorta and pulmonary arteries must be (greater/less) than that of the ventricles.

Answer 26

systemic and pulmonary veins closed greater

Question 27

when the atria contract, more blood is forced into the ___

Answer 27

ventricles

Question 28

when the ventricular myocardium begins to contract, the pressure in the ventricles (increases/decreases)

Answer 28

increases

Question 29

the 1st effect of the rise in pressure is to cause the (AV/cuspid) valves to (close/open)

Answer 29

AV, close

Question 30

the semilunar valves do not open until the pressure in the ventricles exceeds the pressure in the (arteries/ventricles)

Answer 30

arteries

Question 31

the semilunar valves close when the pressure in the arteries becomes (greater/less) than that of the ventricles

Answer 31

greater

Question 32

if the arterial blood pressure is elevated, it becomes (easier/harder) for the ventricles to eject blood

Answer 32

harder

Question 33

The layer (tunic)present in all vessels shown is the ___.

Answer 33

tunica interna

Question 34

the tunica interna in the capillary is made of ____ tissue

Answer 34

epithelium

Question 35

would epithelial tissue allow interchange of materials btwn the blood and the surrounding interstitial fluid?

Answer 35

yes

Question 36

if the precapillary sphincter in the arteriole constricts, the blood flow into the capillary will (increase/decrease)

Answer 36

decrease

Question 37

the tunica media in the aorta contains much ___ tissue

Answer 37

connective

Question 38

the tunica media of the muscular artery is primarily composed of ___ muscle tissue

Answer 38

smooth

Question 39

when the contraction of smooth muscle increase, the vessel's lumen (decreases/increases)

Answer 39

decrease

Question 40

if the contraction in the smooth muscle in arteries and arterioles increases, then arteriol blood pressure should (decrease/increase)

Answer 40

increase

Question 41

valves in veins prevent blood from flowing back toward the ___

Answer 41

capillaries