Sperm are moved along the ductus deferens (vas deferens) by
A) hydrostatic force.
B) ciliary action.
C) peristaltic contractions.
D) suction.
E) hydraulic action.
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Question 2) The phase in the cardiac cycle when the mitral valve is closed and the aortic valve is open is the
A) atrial systole.
B) early diastolic filling phase.
C) late diastolic filling phase.
D) systolic ejection phase.
E) dicrotic phase.
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Question 3) The male gonad is called a(n)
A) seminal vesicle.
B) epididymis.
C) rete.
D) testis.
E) prostate.
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Question 4) Considering the left ventricle, why does isovolumetric ventricular contraction occur during ventricular systole?
A) The ventricle needs to pressurize the blood to close the aortic valve.
B) Ventricular pressure is greater than atrial pressure so the ventricle cannot eject blood.
C) The bicuspid valve needs time to shut before the ventricle can eject blood.
D) Aortic pressure is higher than ventricular pressure and the ventricle must pressurize the blood to open the aortic valve.
E) The ventricle is still filling with blood and therefore cannot eject blood during this time.
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Question 5) The reproductive organ that produces gametes is called a
A) duct.
B) gland.
C) gonad.
D) womb.
E) girdle.
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Question 6) The first heart sound (lubb) is associated with
A) atrial systole.
B) closing of the atrioventricular valves.
C) opening of the atrioventricular valves.
D) closing of the semilunar valves.
E) opening of the semilunar valves.
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Question 7) The reproductive system includes all of the following except
A) gonads and external genitalia.
B) ducts that receive and transport the gametes.
C) accessory glands and organs that secrete fluids.
D) organs for copulation.
E) glands and organs that produce and store urine.
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Question 8) An ECG is used to diagnose all of the following conditions except
A) an AV block.
B) an ectopic pacemaker.
C) angina pectoris.
D) premature atrial contractions.
E) ventricular tachycardia.
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Question 9) Administration of a medication in the elderly can result in a much higher dosage than the clinician might intend because
A) the metabolic rate in the elderly is so high.
B) the kidneys of the elderly do not work well.
C) the elderly have less water content in the body.
D) other medications they take might enhance the concentration of another drug.
E) they cannot regulate pH well.
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Question 10) The AV node delay is beneficial because
A) it allows time for the atria to contract.
B) it allows time for the ventricles to contract.
C) it allows time to send feedback to the brain about heartrate.
D) it decreases neural stimulation of the heart.
E) it hyperpolarizes the ventricular cell membranes.
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