BIOS 252 Anatomy & Physiology II Exam
final (Latest Update ) Anatomy
and Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which heart chamber receives oxygenated blood from the
lungs?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: C. Left atrium
Rationale: Pulmonary veins deliver oxygen-rich blood to the left
atrium.
2. Which heart chamber pumps blood to the systemic circulation?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: D. Left ventricle
,Rationale: Left ventricle has thick muscular walls to pump blood
into the aorta.
3. Which heart valve prevents backflow into the left atrium?
A. Mitral valve
B. Tricuspid valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Mitral valve
Rationale: Prevents regurgitation from left ventricle during systole.
4. Which heart valve prevents backflow into the right atrium?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Tricuspid valve
Rationale: Located between right atrium and ventricle; ensures one-
way flow.
5. Which heart valve allows blood to exit the right ventricle?
A. Pulmonary valve
B. Tricuspid valve
C. Mitral valve
D. Aortic valve
,Correct Answer: A. Pulmonary valve
Rationale: Opens during ventricular systole to pulmonary artery.
6. Which heart valve allows blood to exit the left ventricle?
A. Aortic valve
B. Mitral valve
C. Tricuspid valve
D. Pulmonary valve
Correct Answer: A. Aortic valve
Rationale: Opens during ventricular systole to aorta.
7. Which vessels carry blood away from the heart?
A. Arteries
B. Veins
C. Capillaries
D. Venules
Correct Answer: A. Arteries
Rationale: Arteries transport blood from the heart to tissues.
8. Which vessels carry blood toward the heart?
A. Veins
B. Arteries
C. Capillaries
D. Arterioles
, Correct Answer: A. Veins
Rationale: Veins return blood to the heart under low pressure.
9. Which layer of blood vessel contains smooth muscle?
A. Tunica media
B. Tunica intima
C. Tunica externa
D. Endothelium
Correct Answer: A. Tunica media
Rationale: Smooth muscle allows vasoconstriction and vasodilation.
10. Which layer of blood vessel is in direct contact with blood?
A. Tunica intima
B. Tunica media
C. Tunica externa
D. Adventitia
Correct Answer: A. Tunica intima
Rationale: Endothelium lines the lumen of blood vessels.
11. Which type of vessel allows exchange of gases and nutrients?
A. Capillaries
B. Arteries
C. Veins
D. Arterioles
final (Latest Update ) Anatomy
and Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which heart chamber receives oxygenated blood from the
lungs?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: C. Left atrium
Rationale: Pulmonary veins deliver oxygen-rich blood to the left
atrium.
2. Which heart chamber pumps blood to the systemic circulation?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: D. Left ventricle
,Rationale: Left ventricle has thick muscular walls to pump blood
into the aorta.
3. Which heart valve prevents backflow into the left atrium?
A. Mitral valve
B. Tricuspid valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Mitral valve
Rationale: Prevents regurgitation from left ventricle during systole.
4. Which heart valve prevents backflow into the right atrium?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Tricuspid valve
Rationale: Located between right atrium and ventricle; ensures one-
way flow.
5. Which heart valve allows blood to exit the right ventricle?
A. Pulmonary valve
B. Tricuspid valve
C. Mitral valve
D. Aortic valve
,Correct Answer: A. Pulmonary valve
Rationale: Opens during ventricular systole to pulmonary artery.
6. Which heart valve allows blood to exit the left ventricle?
A. Aortic valve
B. Mitral valve
C. Tricuspid valve
D. Pulmonary valve
Correct Answer: A. Aortic valve
Rationale: Opens during ventricular systole to aorta.
7. Which vessels carry blood away from the heart?
A. Arteries
B. Veins
C. Capillaries
D. Venules
Correct Answer: A. Arteries
Rationale: Arteries transport blood from the heart to tissues.
8. Which vessels carry blood toward the heart?
A. Veins
B. Arteries
C. Capillaries
D. Arterioles
, Correct Answer: A. Veins
Rationale: Veins return blood to the heart under low pressure.
9. Which layer of blood vessel contains smooth muscle?
A. Tunica media
B. Tunica intima
C. Tunica externa
D. Endothelium
Correct Answer: A. Tunica media
Rationale: Smooth muscle allows vasoconstriction and vasodilation.
10. Which layer of blood vessel is in direct contact with blood?
A. Tunica intima
B. Tunica media
C. Tunica externa
D. Adventitia
Correct Answer: A. Tunica intima
Rationale: Endothelium lines the lumen of blood vessels.
11. Which type of vessel allows exchange of gases and nutrients?
A. Capillaries
B. Arteries
C. Veins
D. Arterioles
