BIO220 Topic 2 Graded Quiz

10 Jun BIO220 Topic 2 Graded Quiz

Question
Question 1

2.50 points out of 2.50

Question text

All cardiac veins empty into the ________, which then empties into the ______.

Select one:

a. coronary sinus; left atrium

b. coronary sinus; right atrium

c. great cardiac vein; right atrium

d. great cardiac vein; superior vena cava

e. inferior vena cava; left atrium

Question 2

2.50 points out of 2.50

Question text

A stab wound into the heart can result in cardiac tamponade. This means that

Select one:

a. blood enters the pleural cavity.

b. the heart is compressed by blood in the pericardial sac.

c. the electrical conduction system of the heart is damaged.

d. the left coronary artery has been damaged or cut.

e. the heart has lost all of its blood.

Question 3

2.50 points out of 2.50

Question text

Which vessels empty blood into the left atrium?

Select one:

a. aorta

b. right atrium

c. pulmonary trunk

d. pulmonary arteries

e. pulmonary veins

Question 4

2.50 points out of 2.50

Question text

The right side of the heart receives blood from the body and pumps through _________ circulation to the lungs.

Select one:

a. hepatic

b. pulmonary

c. peripheral

d. systemic

Question 5

2.50 points out of 2.50

Question text

The volume of blood pumped during each cardiac cycle is the

Select one:

a. stroke volume.

b. cardiac output.

c. cardiac reserve.

d. end-systolic volume.

e. end-diastolic volume.

Question 6

2.50 points out of 2.50

Question text

The figure illustrates the cardiac action potential. What does “B” represent?

Select one:

a. early repolarization phase

b. plateau phase

c. final repolarization phase

d. depolarization phase

Question 7

2.50 points out of 2.50

Question text

Which of the following heart chambers is ly associated with the blood vessel that enters or leaves it?

Select one:

a. right atrium – pulmonary veins

b. left atrium – aorta

c. right ventricle – pulmonary trunk

d. left ventricle – superior vena cava and inferior vena cava

e. right atrium – aorta

Question 8

2.50 points out of 2.50

Question text

What vessel exits the left ventricle?

Select one:

a. pulmonary trunk

b. pulmonary vein

c. aorta

d. pulmonary artery

Question 9

2.50 points out of 2.50

Question text

What is the importance of the delay in the action potential in the AV node?

Select one:

a. It allows the action potential to reach both ventricles at the same time.

b. It allows an action potential to reach the left atrium so both atria contract together.

c. It slows the rate of contraction of the ventricles.

d. It allows time for the atria to be filled with blood.

Question 10

2.50 points out of 2.50

Question text

Chemoreceptors sensitive to blood oxygen levels are primarily located in the

Select one:

a. medulla oblongata.

b. carotid arteries.

c. right atrium.

d. left ventricle.

e. jugular veins.

Question 11

2.50 points out of 2.50

Question text

The chordae tendineae

Select one:

a. connect the atria to the ventricles.

b. are found in the interventricular septum.

c. are part of the conducting system of the heart.

d. connect the flaps of the AV valves to the papillary muscles.

e. are a part of the myocardium.

Question 12

2.50 points out of 2.50

Question text

Which of the following factors would cause an increase in heart rate?

Select one:

a. increased parasympathetic stimulation

b. stimulation of baroreceptors in the aorta

c. increased epinephrine release from the adrenal medulla

d. increased production of atrial natriuretic factor

e. vagal stimulation

Question 13

2.50 points out of 2.50

Question text

Another name for the visceral pericardium is the

Select one:

a. endocardium.

b. epicardium.

c. isocardium.

d. myocardium.

e. visocardium.

Question 14

2.50 points out of 2.50

Question text

Aortic stenosis results from

Select one:

a. a hole in the interatrial septum.

b. a weakening of heart muscle.

c. a narrowed opening through the aortic valve.

d. low oxygen levels.

e. leakage from the AV valves.

Question 15

2.50 points out of 2.50

Question text

The valve located between the right ventricle and the pulmonary trunk is the

Select one:

a. aortic semilunar valve.

b. pulmonary semilunar valve.

c. tricuspid valve.

d. mitral valve.

e. bicuspid valve.

Question 16

2.50 points out of 2.50

Question text

The period of time in which the myocardium is insensitive to further stimulation is called the

Select one:

a. absolute refractory period.

b. hyperpolarization period.

c. AV period.

d. SA period.

e. ectopic focus.

Question 17

2.50 points out of 2.50

Question text

Which of the following layers forms the bulk of the heart wall?

Select one:

a. epicardium

b. pericardium

c. endocardium

d. myocardium

e. visceral pericardium

Question 18

2.50 points out of 2.50

Question text

Which of the following is mismatched?

Select one:

a. opening of sodium channels – depolarization

b. closing of calcium channels – plateau phase

c. opening of potassium channels – rapid repolarization

d. closure of sodium channels – early repolarization

e. opening of calcium channels – plateau phase

Question 19

2.50 points out of 2.50

Question text

When a pacemaker potential in the SA node reaches threshold,

Select one:

a. the permeability to K+ ions increases.

b. many voltage-gated Ca2+ channels open.

c. voltage-gated Ca2+ channels close.

d. RMP has been restored.

e. permeability of the cell does not change.

Question 20

2.50 points out of 2.50

Question text

Blood does not enter or leave the ventricles during the period called

Select one:

a. ejection.

b. rapid filling.

c. atrial systole.

d. isovolumetric contraction.

e. active and passive filling.