bio 224 heart and vessel quizes

Question 1

The right atrioventicualr valve is also called the

Answer 1

Tricuspid

Question 2

Respectively the right and left atrioventricular valves are also known as

Answer 2

tricuspid and mitral

Question 3

Which valve regulates blood flow into the pulmonary trunk

Answer 3

Pulmonic

Question 4

Which structure is directly attached to the right and left atrioventricular valves

Answer 4

chordea tendinea

Question 5

The right ventricle of the heart acts as a pump for the

Answer 5

pulmonary circulation

Question 6

In which choice are the components of the cardiac conduction system listed in the correct sequence?

Answer 6

SA node, AV node, AV bundle, purkinje fibers

Question 7

a 30 year old male with normal resting heart would have a stroke vloume of ___

Answer 7

70

Question 8

the plateau phase of the cardiac contractile cell action potential is caused by

Answer 8

Ca2+ inflow

Question 9

Contraction of a ventricular chamber is called

Answer 9

systole

Question 10

For any given action potential associated with the cardiac contracting cells, the pleteau results from the influx of _____ ion to get full credit

Answer 10

calcium

Question 11

What structure is attcahed to the leaflets of the atrioventricualr valves to the papillary muscle

Answer 11

chordae tendineae

Question 12

Blood vessels carrying blood away from the heart is termed ___ while blood vessels carrying blood to the heart is termed ___

Answer 12

Artery, veins

Question 13

The right atrioventricualr valve is called the ___ valve while the left semilunar valve is called the ___ valve

Answer 13

Tricuspid, aortic

Question 14

During ventricular filling, the mitral valve is _____ while the aortic valve is

Answer 14

Opened, closed

Question 15

During ventricular ejection, the volume of blood ejection from the left ventricle is called the ____

Answer 15

Stroke volume

Question 16

the first heart sound is heard during ________while the second heart sound is heard during __________

Answer 16

Isovolumetric contraction ,
isovolumetric relaxation

Question 17

The specialized cardiac tissues acting as the pacemaker of the heart is referred to as the _______,

Answer 17

Sinoatrial node

Question 18

relating to cardiac output, the difference between the end diastolic volume ( EDV) and the end systolic volume ( ESV) is known as the _______

Answer 18

Stroke volume

Question 19

The _____ Pressure tends to push water out of the capillary while the ___ pressure draws or pulls water back into the capillary

Answer 19

Hydrostatic, osmotic

Question 20

Blood returining to the heart from the pulmonary circuit first enters the

Answer 20

Left atrium

Question 21

Which chamber of the heart receives blood from the pulmonary vein

Answer 21

left atrium

Question 22

Contractions of the papillary muscles

Answer 22

Prevent the atrioventricular valves frim reversing into the atria

Question 23

Cavity of the heart that normally has the thickest wall is the

Answer 23

left ventricle

Question 24

during the period of ventricualr filling

Answer 24

blood flows through the atria and the open AV valves

Question 25

The structure reffered to as the pacemaker of the heart is the

Answer 25

SA node

Question 26

Which valve regulates blood flow into the pulmonary trunk

Answer 26

pulmonic

Question 27

When the right atrium contracts it pushes blood into the

Answer 27

right ventricle

Question 28

posterior interventricular artery is a branch of the

Answer 28

right coronary artery

Question 29

Which of the following structure IS part of the conduction system of the heart

Answer 29

Purkinje fibers, sinoatrial node, av node and bundle of his

Question 30

Which of the following vessels carries blood form the lungs to the heart?

Answer 30

Pulmonary vein

Question 31

Small blood vessels in the tunica externa of a blood vessel that supply blood to the outer parts vessel wall are called

Answer 31

vasa vasora

Question 32

Small openings in the endothelial linning of capillaries are termed

Answer 32

fenestrations

Question 33

Damage to the left ventricualr myocardium can cause

Answer 33

Pulmonary edema

Question 34

If a persons BP is 110/70 mm hg then the

Answer 34

pluse presure is 40 mm hg

Question 35

All these following factors will decrease peripheral resistacne EXCEPT

Answer 35

INCREASE blood viscosity

Question 36

The anterior interventricualr artery is a brach of the

Answer 36

left coronary artery

Question 37

The middle layer of the heart wall is refered to as the

Answer 37

myocardium

Question 38

The pericardial cavity is between the

Answer 38

Visceral pericardium and parietal pericardium

Question 39

which chamber of the heart has to pump against the grestest presure gradient?

Answer 39

left ventricle

Question 40

function of the pericardial fluid is to

Answer 40

reduce friction between the pericardial membranes

Question 41

The saclike structure around the heart is

Answer 41

pericardium

Question 42

Innermost layer of the heart is the

Answer 42

endocardium

Question 43

the muscular layer of the heart wall is the

Answer 43

myocardium

Question 44

the visceral pericardium is also called the

Answer 44

epicardium

Question 45

Which of the follwoing statments is most correct for blood vessels

Answer 45

Veins contain valves and arteries do not

Question 46

Blood going to the lungs through pulmonary arteries contain a high concentration of __ and a low concentration of ___

Answer 46

CO2, Oxygen

Question 47

Hypertension is defined physiologically as a condition of sustained arterial pressure of _____mm Hg or higher

Answer 47

140/90 mm Hg

Question 48

In which sitation would stroke volume be the greatest

Answer 48

When the venous return is increased

Question 49

Permitting the exchange of nutriens and gases between the blood and tissue cells is the primary function

Answer 49

capillaries

Question 50

left heart is responsible for pumping

Answer 50

oxygenated blood to the body

Question 50

What is the second structure pierced by the sword

Answer 50

Parietal pericardium

Question 51

Which of the following contains deoxygenated blood

Answer 51

coronary sinus

Question 52

Blood is prevented from backflow into the right ventrucle by the

Answer 52

coronary sinus

Question 53

The ventricualr pressure is 135 mm hg and the aortic pressure is 120 mm hg what phase of the cardiac cycle is the heart in

Answer 53

Ventricualr ejection

Question 54

Which of the following statements is most correct for the heart

Answer 54

Opening of the semilunar valves requires a higher pressure in the ventricles than the great vessels

Question 55

Rapid depolarization phase

Answer 55

Na+ active and Na+ enters, rapid depolarizing

Question 56

Initial repolarization phase

Answer 56

Na+ are inactive, some K+ channels open and K+ leaks of excitment

Question 57

Plateau phase

Answer 57

Ca+ open and enter, K+ exit and prolnging depolarization

Question 58

Repolarization phase

Answer 58

Na+ and Ca+ channels close, K+ countinue to exit causing repolorization