BIOS 256 Week 6 Quiz Final Exam
(Latest Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. What is the main function of the cardiovascular system?
A. Produce hormones
B. Transport nutrients, gases, and wastes
C. Filter toxins
D. Digest food
Correct Answer: B
Rationale: The cardiovascular system transports oxygen, nutrients,
and wastes to and from body tissues.
2. Which chamber receives deoxygenated blood from the body?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Correct Answer: B
Rationale: The right atrium receives deoxygenated blood from the
superior and inferior vena cava.
,3. Which chamber pumps blood to the lungs?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: B
Rationale: The right ventricle pumps deoxygenated blood into the
pulmonary artery.
4. Which chamber pumps blood to systemic circulation?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: D
Rationale: The left ventricle pumps oxygenated blood into the aorta
for body distribution.
5. Which valve prevents backflow into the right atrium?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A
,Rationale: The tricuspid valve ensures one-way flow from the right
atrium to the right ventricle.
6. Which valve prevents backflow into the left atrium?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: B
Rationale: The mitral valve prevents blood from flowing back into
the left atrium.
7. Which valve prevents backflow from the left ventricle to the
aorta?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: D
Rationale: The aortic valve ensures one-way flow from the left
ventricle to the systemic circulation.
8. Which valve prevents backflow from the right ventricle to the
pulmonary artery?
, A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: C
Rationale: The pulmonary valve prevents blood from returning to
the right ventricle.
9. Which node initiates the heartbeat?
A. AV node
B. SA node
C. Purkinje fibers
D. Bundle of His
Correct Answer: B
Rationale: The SA node generates electrical impulses, acting as the
natural pacemaker.
10. Which node delays the electrical impulse to allow ventricular
filling?
A. AV node
B. SA node
C. Purkinje fibers
D. Bundle of His
Correct Answer: A
(Latest Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A –
Chamberlain
1. What is the main function of the cardiovascular system?
A. Produce hormones
B. Transport nutrients, gases, and wastes
C. Filter toxins
D. Digest food
Correct Answer: B
Rationale: The cardiovascular system transports oxygen, nutrients,
and wastes to and from body tissues.
2. Which chamber receives deoxygenated blood from the body?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Correct Answer: B
Rationale: The right atrium receives deoxygenated blood from the
superior and inferior vena cava.
,3. Which chamber pumps blood to the lungs?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: B
Rationale: The right ventricle pumps deoxygenated blood into the
pulmonary artery.
4. Which chamber pumps blood to systemic circulation?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: D
Rationale: The left ventricle pumps oxygenated blood into the aorta
for body distribution.
5. Which valve prevents backflow into the right atrium?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A
,Rationale: The tricuspid valve ensures one-way flow from the right
atrium to the right ventricle.
6. Which valve prevents backflow into the left atrium?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: B
Rationale: The mitral valve prevents blood from flowing back into
the left atrium.
7. Which valve prevents backflow from the left ventricle to the
aorta?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: D
Rationale: The aortic valve ensures one-way flow from the left
ventricle to the systemic circulation.
8. Which valve prevents backflow from the right ventricle to the
pulmonary artery?
, A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: C
Rationale: The pulmonary valve prevents blood from returning to
the right ventricle.
9. Which node initiates the heartbeat?
A. AV node
B. SA node
C. Purkinje fibers
D. Bundle of His
Correct Answer: B
Rationale: The SA node generates electrical impulses, acting as the
natural pacemaker.
10. Which node delays the electrical impulse to allow ventricular
filling?
A. AV node
B. SA node
C. Purkinje fibers
D. Bundle of His
Correct Answer: A
