EMT-B MIDTERM EXAM
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1. Deoxygenated blood from the body returns to the: A. right atrium.
A. right atrium.
B. right ventricle.
C. left atrium.
D. left ventricle.
2. Blood that is ejected from the right ventricle: B. flows into the pul-
A. enters the systemic circulation. monary arteries.
B. flows into the pulmonary arteries.
C. has a high concentration of oxygen.
D. was received directly from the aorta.
3. Which of the following blood vessels transports oxy- D. pulmonary veins
genated blood?
A. superior vena cava
B. pulmonary arteries
C. inferior vena cava
D. pulmonary veins
4. What is the function of the left atrium? B. It receives oxygenated
A. It ejects oxygenated blood into the aorta. blood from the lungs.
B. It receives oxygenated blood from the lungs.
C. It receives blood from the pulmonary arteries.
D. It receives oxygenated blood from the vena cava.
5. The left ventricle has the thickest walls because it: C. pumps blood into the
A. pumps blood to the lungs to be reoxygenated. aorta and systemic circu-
B. uses less oxygen than other chambers of the heart. lation.
C. pumps blood into the aorta and systemic circula-
tion.
D. receives blood directly from the systemic circula-
tion.
, EMT-B MIDTERM EXAM
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6. The electrical impulse generated by the heart origi- C. sinoatrial (SA) node.
nates in the:
A. bundle of His.
B. coronary sinus.
C. sinoatrial (SA) node.
D. atrioventricular (AV) node.
7. When an electrical impulse reaches the AV node, it is A. blood can pass from the
slowed for a brief period of time so that: atria to the ventricles.
A. blood can pass from the atria to the ventricles.
B. blood returning from the body can fill the atria.
C. the impulse can spread through the Purkinje fibers.
D. the SA node can reset and generate another im-
pulse.
8. The ability of cardiac muscle cells to contract sponta- D. automaticity.
neously without a stimulus from a nerve source is
called:
A. excitability.
B. contractility.
C. impulsivity.
D. automaticity.
9. The electrical stimulus that originates in the heart's D. autonomic nervous sys-
primary pacemaker is controlled by impulses from tem.
the
brain that arrive by way of the:
A. parietal lobe.
B. pons and medulla.
C. somatic nervous system.
D. autonomic nervous system.
10.
, EMT-B MIDTERM EXAM
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Which of the following is NOT a function of the sym- B. constriction of blood
pathetic nervous system? vessels in the muscles
A. dilation of blood vessels in the muscles
B. constriction of blood vessels in the muscles
C. increases in the heart and respiratory rates
D. constriction of blood vessels in the digestive system
11. In contrast to the sympathetic nervous system, the C. slows the heart and res-
parasympathetic nervous system: piratory rates.
A. prepares the body to handle stress.
B. causes an increase in the heart rate.
C. slows the heart and respiratory rates.
D. dilates the blood vessels in the muscles.
12. When the myocardium requires more oxygen: B. the arteries supplying
A. the heart contracts with less force. the heart dilate.
B. the arteries supplying the heart dilate.
C. the heart rate decreases significantly.
D. the AV node conducts fewer impulses.
13. The myocardium receives oxygenated blood from the D. coronary arteries, aorta
__________, which originate(s) from the
__________.
A. coronary sinus, vena cava
B. aorta, inferior vena cava
C. vena cava, coronary veins
D. coronary arteries, aorta
14. Which of the following would cause the greatest in- A. increased heart rate and
crease in cardiac output? increased stroke volume
A. increased heart rate and increased stroke volume
B. decreased stroke volume and increased heart rate
, EMT-B MIDTERM EXAM
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C. decreased heart rate and increased stroke volume
D. decreased stroke volume and decreased heart rate
15. The right coronary artery supplies blood to the: B. right ventricle and infe-
A. left ventricle and inferior wall of the right atrium. rior wall of the left ventri-
B. right ventricle and inferior wall of the left ventricle. cle.
C. right atrium and posterior wall of the right ventri-
cle.
D. left ventricle and posterior wall of the right ventri-
cle.
16. The head and brain receive their supply of oxygenated C. carotid arteries.
blood from the:
A. iliac arteries.
B. brachial arteries.
C. carotid arteries.
D. subclavian arteries.
17. The descending aorta divides into the two iliac arteries B. umbilicus.
at the level of the:
A. nipple line.
B. umbilicus.
C. iliac crest.
D. pubic symphysis.
18. Which of the following veins is located inferior to the C. saphenous
trunk?
A. cephalic
B. axillary
C. saphenous
D. subclavian
19. A. femoral arteries.
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1. Deoxygenated blood from the body returns to the: A. right atrium.
A. right atrium.
B. right ventricle.
C. left atrium.
D. left ventricle.
2. Blood that is ejected from the right ventricle: B. flows into the pul-
A. enters the systemic circulation. monary arteries.
B. flows into the pulmonary arteries.
C. has a high concentration of oxygen.
D. was received directly from the aorta.
3. Which of the following blood vessels transports oxy- D. pulmonary veins
genated blood?
A. superior vena cava
B. pulmonary arteries
C. inferior vena cava
D. pulmonary veins
4. What is the function of the left atrium? B. It receives oxygenated
A. It ejects oxygenated blood into the aorta. blood from the lungs.
B. It receives oxygenated blood from the lungs.
C. It receives blood from the pulmonary arteries.
D. It receives oxygenated blood from the vena cava.
5. The left ventricle has the thickest walls because it: C. pumps blood into the
A. pumps blood to the lungs to be reoxygenated. aorta and systemic circu-
B. uses less oxygen than other chambers of the heart. lation.
C. pumps blood into the aorta and systemic circula-
tion.
D. receives blood directly from the systemic circula-
tion.
, EMT-B MIDTERM EXAM
Study online at https://quizlet.com/_eakplu
6. The electrical impulse generated by the heart origi- C. sinoatrial (SA) node.
nates in the:
A. bundle of His.
B. coronary sinus.
C. sinoatrial (SA) node.
D. atrioventricular (AV) node.
7. When an electrical impulse reaches the AV node, it is A. blood can pass from the
slowed for a brief period of time so that: atria to the ventricles.
A. blood can pass from the atria to the ventricles.
B. blood returning from the body can fill the atria.
C. the impulse can spread through the Purkinje fibers.
D. the SA node can reset and generate another im-
pulse.
8. The ability of cardiac muscle cells to contract sponta- D. automaticity.
neously without a stimulus from a nerve source is
called:
A. excitability.
B. contractility.
C. impulsivity.
D. automaticity.
9. The electrical stimulus that originates in the heart's D. autonomic nervous sys-
primary pacemaker is controlled by impulses from tem.
the
brain that arrive by way of the:
A. parietal lobe.
B. pons and medulla.
C. somatic nervous system.
D. autonomic nervous system.
10.
, EMT-B MIDTERM EXAM
Study online at https://quizlet.com/_eakplu
Which of the following is NOT a function of the sym- B. constriction of blood
pathetic nervous system? vessels in the muscles
A. dilation of blood vessels in the muscles
B. constriction of blood vessels in the muscles
C. increases in the heart and respiratory rates
D. constriction of blood vessels in the digestive system
11. In contrast to the sympathetic nervous system, the C. slows the heart and res-
parasympathetic nervous system: piratory rates.
A. prepares the body to handle stress.
B. causes an increase in the heart rate.
C. slows the heart and respiratory rates.
D. dilates the blood vessels in the muscles.
12. When the myocardium requires more oxygen: B. the arteries supplying
A. the heart contracts with less force. the heart dilate.
B. the arteries supplying the heart dilate.
C. the heart rate decreases significantly.
D. the AV node conducts fewer impulses.
13. The myocardium receives oxygenated blood from the D. coronary arteries, aorta
__________, which originate(s) from the
__________.
A. coronary sinus, vena cava
B. aorta, inferior vena cava
C. vena cava, coronary veins
D. coronary arteries, aorta
14. Which of the following would cause the greatest in- A. increased heart rate and
crease in cardiac output? increased stroke volume
A. increased heart rate and increased stroke volume
B. decreased stroke volume and increased heart rate
, EMT-B MIDTERM EXAM
Study online at https://quizlet.com/_eakplu
C. decreased heart rate and increased stroke volume
D. decreased stroke volume and decreased heart rate
15. The right coronary artery supplies blood to the: B. right ventricle and infe-
A. left ventricle and inferior wall of the right atrium. rior wall of the left ventri-
B. right ventricle and inferior wall of the left ventricle. cle.
C. right atrium and posterior wall of the right ventri-
cle.
D. left ventricle and posterior wall of the right ventri-
cle.
16. The head and brain receive their supply of oxygenated C. carotid arteries.
blood from the:
A. iliac arteries.
B. brachial arteries.
C. carotid arteries.
D. subclavian arteries.
17. The descending aorta divides into the two iliac arteries B. umbilicus.
at the level of the:
A. nipple line.
B. umbilicus.
C. iliac crest.
D. pubic symphysis.
18. Which of the following veins is located inferior to the C. saphenous
trunk?
A. cephalic
B. axillary
C. saphenous
D. subclavian
19. A. femoral arteries.
