Exam 4 Part 2

Question 1

A person with type AB blood has plasma that contains:

a. anti-a and anti-b antibodies.
b. anti-a antibodies only.
c. anti-b antibodies only.
d. neither anti-a nor anti-b antibodies.

Answer 1

d. neither anti-a nor anti-b antibodies.

Question 2

ABO and Rh blood types are determined by the presence or absence of:

a. antibodies on erythrocytes.
b. antigens in plasma.
c. antigens on erythrocytes.
d. antigens on leukocytes.

Answer 2

c. antigens on erythrocytes.

Question 3

The two leukocytes that are most important in phagocytizing disease organisms and cellular debris are:

a. eosinophils and neutrophils.
b. lymphocytes and monocytes.
c. basophils and monocytes.
d. monocytes and neutrophils.

Answer 3

d. monocytes and neutrophils.

Question 4

Leukocytes that enter body tissues to become macrophages are:

a. basophils.
b. lymphocytes.
c. monocytes.
d. eosinophils.

Answer 4

c. monocytes.

Question 5

Mrs. Granger has an infected bedsore. It is swollen and has lots of pus. Which white blood cells are currently most active in her arm?

a. Basophils
b. Lymphocytes
c. Eosinophils
d. Neutrophils

Answer 5

d. Neutrophils

Question 6

A hormone that stimulates the production of neutrophils is:

a. thymosin
b. Multi-CSF
c. G-CSF
d. M-CSF
e. GM-CSF

Answer 6

c. G-CSF

Question 7

The fibrous connective tissue of the heart:

a. Assists in conducting the action potentials from the atrium to the ventricles
b. Adds strength and prevents over expansion
c. Helps reduce friction around the heart
d. Contracts so blood can be pumped

Answer 7

b. Adds strength and prevents over expansion

Question 8

Blood flows from the superior vena cava into the:

a. Pulmonary trunk
b. Right atrium
c. Aorta
d. Left atrium
e. Inferior vena cava

Answer 8

b. Right atrium

Question 9

The right atrium receives blood directly from the:

a. venae cavae.
b. pulmonary veins.
c. aorta.
d. pulmonary trunk

Answer 9

a. venae cavae.

Question 10

Damage to the chordae tendineae in the left ventricle may result in:

a. mitral regurgitation.
b. mitral valve prolapse.
c. bicuspid regurgitation.
d. bicuspid prolapse.
e. all of the above

Answer 10

e. all of the above

Question 11

The thinnest walls in the heart are found in the:

Answer 11

a. Atrium

Question 12

Blood returning to the right atrium is:

a. deoxygenated.
b. oxygenated.

Answer 12

a. deoxygenated.

Question 13

The correct sequence of vessels in the flow of blood is:

Answer 13

c. heart - arteries - capillaries - veins - heart

Question 14

A slow heart rate of less than 60 beats per minute is known as

Answer 14

bradycardia.

Question 15

The portion of the circulatory system carrying oxygenated blood to body tissues and returning deoxygenated blood to the heart is the

Answer 15

a. systemic circuit.

Question 16

Select the correct sequence of impulse transmission in the heart.

a. AV bundle - AV node - SA node - Purkinje fibers
b. AV node - SA node - AV bundle - Purkinje fibers
c. SA node - AV bundle - AV node - Purkinje fibers
d. SA node - AV node - AV bundle - Purkinje fibers

Answer 16

d. SA node - AV node - AV bundle - Purkinje fibers

Question 17

Arteries always carry:

a. Blood to the heart
b. Oxygenated blood
c. Blood away from the heart
d. Deoxygenated blood

Answer 17

c. Blood away from the heart

Question 18

The volume of blood left in the ventricle at the end of diastole is:

a. Cardiac output
b. ESV
c. Cardiac reserve volume
d. Stroke volume
e. preload

Answer 18

not d

Question 19

Cardiac output would be greatest when:

a. sympathetic stimulation of the heart increases.
b. parasympathetic stimulation of the heart increases.

Answer 19

a. sympathetic stimulation of the heart increases.

Question 20

The portion of an electrocardiogram that is formed by depolarization of the ventricles is the:

a. P wave.
b. T wave.
c. QRS wave.

Answer 20

c. QRS wave.

Question 21

The double-layered, loosely fitting sac around the heart is formed of an inner:

a. visceral pericardium and an outer parietal pericardium.
b. parietal pericardium and an outer visceral pericardium.
c. fibrous pericardium and an outer parietal pericardium.
d. parietal pericardium and an outer fibrous pericardium.

Answer 21

d. parietal pericardium and an outer fibrous pericardium.

Question 22

As a result of the long refractory period, cardiac muscle cannot exhibit:

a. recruitment.
b. tetanus.
c. Temporal summation.
d. fatigue.
e. treppe.

Answer 22

not c

Question 23

The first heart sound of the cardiac cycle is produced by:

a. opening of the semilunar valves.
b. closure of the semilunar valves.
c. closure of the atrioventricular valves.
d. opening of the atrioventricular valves.

Answer 23

not b

Question 24

An atrioventricular valve prevents the flow of blood from a/an:

a. ventricle to a large artery.
b. atrium to a ventricle.
c. atrium to a large artery.
d. ventricle to an atrium.

Answer 24

d. ventricle to an atrium.

Question 25

When the left ventricle contracts, the distance from the apex to the base:

a. increases.
b. decreases.
c. remains unchanged.

Answer 25

b. decreases.

Question 26

During ventricular systole, the:

a. atria are contracting.
b. AV valves are closed.
c. pressure in the ventricles declines.
d. ventricles are relaxed.
e. blood is entering the ventricles.

Answer 26

b. AV valves are closed.