BATES CHAPTER 16
CARDIOVASCULAR 2026 CLINICAL
SCRIPT SOLVED QUESTIONS
VERIFIED ANSWERS A+
◉ Blood that is ejected from the right ventricle:
A. enters the systemic circulation.
B. flows into the pulmonary arteries.
C. has a high concentration of oxygen.
D. was received directly from the aorta.
Answer: B
◉ Which of the following blood vessels transports oxygenated blood?
A. superior vena cava
B. pulmonary arteries
C. inferior vena cava
D. pulmonary veins
Answer: D
◉ What is the function of the left atrium?
A. It ejects oxygenated blood into the aorta.
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.
,Answer: B
◉ The left ventricle has the thickest walls because it:
A. pumps blood to the lungs to be reoxygenated.
B. uses less oxygen than other chambers of the heart.
C. pumps blood into the aorta and systemic circulation.
D. receives blood directly from the systemic circulation.
Answer: C
◉ The electrical impulse generated by the heart originates in the:
A. bundle of His.
B. coronary sinus.
C. sinoatrial (SA) node.
D. atrioventricular (AV) node.
Answer: C
◉ When an electrical impulse reaches the AV node, it is slowed for a
brief period of time so that:
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 impulse.
Answer: A
,◉ The ability of cardiac muscle cells to contract spontaneously without
a stimulus from a nerve source is called:
A. excitability.
B. contractility.
C. impulsivity.
D. automaticity.
Answer: D
◉ The electrical stimulus that originates in the heart's primary
pacemaker is controlled by impulses from the brain that arrive by way of
the:
A. parietal lobe.
B. pons and medulla.
C. somatic nervous system.
D. autonomic nervous system.
Answer: D
◉ Which of the following is NOT a function of the sympathetic nervous
system?
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
, Answer: B
◉ In contrast to the sympathetic nervous system, the parasympathetic
nervous system:
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.
Answer: C
◉ When the myocardium requires more oxygen:
A. the heart contracts with less force.
B. the arteries supplying the heart dilate.
C. the heart rate decreases significantly.
D. the AV node conducts fewer impulses.
Answer: B
◉ The myocardium receives oxygenated blood from the __________,
which originate(s) from the __________.
A. coronary sinus, vena cava
B. aorta, inferior vena cava
C. vena cava, coronary veins
D. coronary arteries, aorta
Answer: D
CARDIOVASCULAR 2026 CLINICAL
SCRIPT SOLVED QUESTIONS
VERIFIED ANSWERS A+
◉ Blood that is ejected from the right ventricle:
A. enters the systemic circulation.
B. flows into the pulmonary arteries.
C. has a high concentration of oxygen.
D. was received directly from the aorta.
Answer: B
◉ Which of the following blood vessels transports oxygenated blood?
A. superior vena cava
B. pulmonary arteries
C. inferior vena cava
D. pulmonary veins
Answer: D
◉ What is the function of the left atrium?
A. It ejects oxygenated blood into the aorta.
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.
,Answer: B
◉ The left ventricle has the thickest walls because it:
A. pumps blood to the lungs to be reoxygenated.
B. uses less oxygen than other chambers of the heart.
C. pumps blood into the aorta and systemic circulation.
D. receives blood directly from the systemic circulation.
Answer: C
◉ The electrical impulse generated by the heart originates in the:
A. bundle of His.
B. coronary sinus.
C. sinoatrial (SA) node.
D. atrioventricular (AV) node.
Answer: C
◉ When an electrical impulse reaches the AV node, it is slowed for a
brief period of time so that:
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 impulse.
Answer: A
,◉ The ability of cardiac muscle cells to contract spontaneously without
a stimulus from a nerve source is called:
A. excitability.
B. contractility.
C. impulsivity.
D. automaticity.
Answer: D
◉ The electrical stimulus that originates in the heart's primary
pacemaker is controlled by impulses from the brain that arrive by way of
the:
A. parietal lobe.
B. pons and medulla.
C. somatic nervous system.
D. autonomic nervous system.
Answer: D
◉ Which of the following is NOT a function of the sympathetic nervous
system?
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
, Answer: B
◉ In contrast to the sympathetic nervous system, the parasympathetic
nervous system:
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.
Answer: C
◉ When the myocardium requires more oxygen:
A. the heart contracts with less force.
B. the arteries supplying the heart dilate.
C. the heart rate decreases significantly.
D. the AV node conducts fewer impulses.
Answer: B
◉ The myocardium receives oxygenated blood from the __________,
which originate(s) from the __________.
A. coronary sinus, vena cava
B. aorta, inferior vena cava
C. vena cava, coronary veins
D. coronary arteries, aorta
Answer: D
