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K: Human Biology (Circulatory System-Heart Structure and Function)
K1,6-K Blood pressure will be at its highest when
a. atria relaxes b. atria contracts c. ventricles relax d. ventricles contract
K2-K The coordinating structure responsible for an intrinsic heart beat is the
a. cerebellum c. chordae tendinae
b. sinoatrial node d. sympathetic nervous system
Use the following diagram to answer question ??
K6-U Systole of the ventricles is occurring at
a. W b. X c. Y d. Z
Use the following diagram to answer question ??
K1-K The structures labelled X and Y in the diagram above are the
a. aorta and the left ventricle
b. pulmonary trunk and the right ventricle
c. anterior vena cava and the left ventricle
d. anterior vena cava and the right ventricle
Use the following diagram to answer question ??
K1,2,6-H The diagram represents what happens in the heart as a result of
a. systole of the atria c. the opening of the semi-lunar valves
b. systole of the ventricles d. the sino-atrial (SA) node not functioning
Use the following diagram to answer questions ?? and ??
K1-U The function of the structure labelled X is to
a. initiate heartbeat c. carry blood to the heart muscle
b. channel blood to the ventricles d. prevent the valves from inverting
K1-K The anterior (superior) vena cava is labelled
a. V b. W c. Y d. Z
K2-U The atrioventricular (AV) node stimulates the
a. aorta c. sinoatrial (SA) node
c. Purkinje fibers d. atrioventricular valves
K5,6-U Which of the following is normal resting systolic blood pressure for an adult?
a. 50 mm Hg b. 80 mm Hg c. 120 mm Hg d. 180 mm Hg
Use the following information to answer question ??
1. systole of the ventricles
2. opening of the atrio-ventricular valves
3. electrical impulse sent from the AV node
4. atria fill with blood
K1,2,3-H The order in which the events occur during one heartbeat (the cardiac cycle) is
a. 2, 1, 3, 4 b. 2, 3, 4, 1 c. 4, 1, 3, 2 d. 4, 3, 2, 1
K1-K Blood leaves the right ventricle via the
a. aorta b. pulmonary trunk c. coronary arteries d. anterior vena cava
K4,6-U Hypertension would be indicated by a blood pressure reading of
a. 100/80 b. 120/50 c. 120/80 d. 150/110
K1-U The path followed by blood on one circuit through the heart is
a. ventricle, atrioventricular valve, semilunar valve, atrium
b. atrium, atrioventricular valve, ventricle, semilunar valve
c. atrium, ventricle, atrioventricular valve, semilunar valve
d. atrium, semilunar valve, ventricle, atrioventricular valve
K2-H A condition called tachycardia exists when a person’s heartrate is abnormally high. Which of the
following explains how tachycardia may arise?
a. the Purkinje fibres are over-stimulating the pacemaker
b. the sinoatrial (SA) node is receiving increased stimulation
c. there is increased stimulation by the parasympathetic nervous system
d. impulses from the sinoatrial (SA) node are not reaching the atrioventricular (AV) node
Use the following diagram to answer question ??
K1,6-U The heart shown above is in the process of
a. atrial and ventricular systole c. atrial systole and ventricular diastole
b. atrial and ventricular diastole d. atrial diastole and ventricular systole
K2-H An irregular heartbeat where contraction of the atria does not always result in contraction of the
ventricles, likely indicates a problem with the
a. SA node b. AV node c. AV valve d. semi-lunar valve
K4-H An increase in which of the following would cause hypertension?
a. heart rate c. arteriole dilation
b. cardiac output d. reabsorption of water by the kidneys
K1,6-U What happens during atrial diastole?
a. atria fill with blood c. ventricles fill with blood
b. semi-lunar valves close d. atrioventricular valves open
Use the following diagram to answer question ??
K2-U Which area indicated in the diagram is the location of the AV node?
a. W b. X c. Y d. Z
K1-K Which chamber of the heart pumps oxygenated blood into the aorta?
a. left atrium b. right atrium c. left ventricle d. right ventricle
Use the following diagram to answer question ??
K1,J5-H The diagram shows a heart defect that occurs approximately once in every 500 births. Babies born
with this defect have
a. a lower than normal heart rate c. difficulty closing the atria-ventricular valves
b. a decreased production of red blood cells d. oxygenated and deoxygenated blood mixed
together
K1,J6,2-U How many heart valves would a blood cell traveling from the renal vein to the pulmonary
vein pass through?
a. none b. one c. two d. four
K1-K The chordae tendinae function to
a. give support to the septum c. open the atrioventricular valves
b. open the semi-lunar valves d. prevent valves in the heart from inverting
Use the following information to answer question ??
1. Sinoatrial (SA) node
2. Purkinje fibers
3. Atrioventricular (AV) node
K2-H Trace the pathway of electrical activity of the heart beginning with atrial systole and ending with
ventricular systole by identifying, in order, the structures above
a. 1, 2, 3 b. 1, 3, 2 c. 3, 1, 2 d. 3, 2, 1
Use the following diagram to answer questions ?? and ??
K1,J4-U Structure X carries blood to the
a. lungs b. heart tissue c. lower body d. upper body
K1-K Structure Y is the
a. septum b. right ventricle c. coronary artery d. chordae tendinae
Use the following diagram to answer question ??
K1-U The function of structure X is to
a. initiate the atrial contraction
b. act as the pacemaker of the heart
c. prevent the atrioventricular (AV) valve from inverting
d. open the atrioventricular (AV) valve when stimulated by an electrical impulse
