Exam 4 Part 2 Flashcards
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.
d. neither anti-a nor anti-b antibodies.
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.
c. antigens on erythrocytes.
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.
d. monocytes and neutrophils.
Leukocytes that enter body tissues to become macrophages are:
a. basophils.
b. lymphocytes.
c. monocytes.
d. eosinophils.
c. monocytes.
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
d. Neutrophils
A hormone that stimulates the production of neutrophils is:
a. thymosin
b. Multi-CSF
c. G-CSF
d. M-CSF
e. GM-CSF
c. G-CSF
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
b. Adds strength and prevents over expansion
Blood flows from the superior vena cava into the:
a. Pulmonary trunk
b. Right atrium
c. Aorta
d. Left atrium
e. Inferior vena cava
b. Right atrium
The right atrium receives blood directly from the:
a. venae cavae.
b. pulmonary veins.
c. aorta.
d. pulmonary trunk
a. venae cavae.
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
e. all of the above
The thinnest walls in the heart are found in the:
a. Atrium
Blood returning to the right atrium is:
a. deoxygenated.
b. oxygenated.
a. deoxygenated.
The correct sequence of vessels in the flow of blood is:
c. heart - arteries - capillaries - veins - heart
A slow heart rate of less than 60 beats per minute is known as
bradycardia.
The portion of the circulatory system carrying oxygenated blood to body tissues and returning deoxygenated blood to the heart is the
a. systemic circuit.
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
d. SA node - AV node - AV bundle - Purkinje fibers
Arteries always carry:
a. Blood to the heart
b. Oxygenated blood
c. Blood away from the heart
d. Deoxygenated blood
c. Blood away from the heart
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
not d
Cardiac output would be greatest when:
a. sympathetic stimulation of the heart increases.
b. parasympathetic stimulation of the heart increases.
a. sympathetic stimulation of the heart increases.
The portion of an electrocardiogram that is formed by depolarization of the ventricles is the:
a. P wave.
b. T wave.
c. QRS wave.
c. QRS wave.
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.
d. parietal pericardium and an outer fibrous pericardium.
As a result of the long refractory period, cardiac muscle cannot exhibit:
a. recruitment.
b. tetanus.
c. Temporal summation.
d. fatigue.
e. treppe.
not c
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.
not b
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.
d. ventricle to an atrium.
