BIOS 252 Anatomy & Physiology II Exam
3 (Latest Update ) Anatomy
and Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which structure of the heart receives oxygenated blood from
the lungs?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Correct Answer: A. Left atrium
Rationale: The left atrium receives oxygen-rich blood from the
pulmonary veins.
2. Which valve prevents backflow of blood from the left ventricle
to the left atrium?
A. Mitral (bicuspid) valve
B. Tricuspid valve
C. Pulmonary valve
D. Aortic valve
,Correct Answer: A. Mitral (bicuspid) valve
Rationale: Ensures one-way flow from left atrium to left ventricle.
3. Which valve prevents backflow from the right ventricle to the
right atrium?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Tricuspid valve
Rationale: Separates right atrium and right ventricle.
4. Which valve prevents backflow from the aorta to the left
ventricle?
A. Aortic valve
B. Pulmonary valve
C. Tricuspid valve
D. Mitral valve
Correct Answer: A. Aortic valve
Rationale: Semilunar valve preventing backflow into ventricle.
5. Which valve prevents backflow from pulmonary artery to right
ventricle?
A. Pulmonary valve
B. Aortic valve
,C. Tricuspid valve
D. Mitral valve
Correct Answer: A. Pulmonary valve
Rationale: Semilunar valve preventing backflow into right ventricle.
6. Which blood vessel carries oxygenated blood to the body?
A. Aorta
B. Pulmonary artery
C. Superior vena cava
D. Inferior vena cava
Correct Answer: A. Aorta
Rationale: Distributes oxygen-rich blood from left ventricle to
systemic circulation.
7. Which blood vessel carries deoxygenated blood to the lungs?
A. Pulmonary artery
B. Pulmonary vein
C. Aorta
D. Coronary artery
Correct Answer: A. Pulmonary artery
Rationale: Carries oxygen-poor blood from right ventricle to lungs.
8. Which blood vessels return oxygenated blood to the heart?
A. Pulmonary veins
B. Pulmonary arteries
, C. Superior vena cava
D. Coronary sinus
Correct Answer: A. Pulmonary veins
Rationale: Return oxygen-rich blood from lungs to left atrium.
9. Which blood vessels carry blood away from the heart?
A. Arteries
B. Veins
C. Capillaries
D. Venules
Correct Answer: A. Arteries
Rationale: Arteries transport blood from heart to tissues.
10. Which vessels allow exchange of gases, nutrients, and wastes?
A. Capillaries
B. Veins
C. Arteries
D. Arterioles
Correct Answer: A. Capillaries
Rationale: Thin-walled vessels for diffusion between blood and
tissues.
11. Which layer of the heart wall contains cardiac muscle?
A. Myocardium
B. Endocardium
3 (Latest Update ) Anatomy
and Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which structure of the heart receives oxygenated blood from
the lungs?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Correct Answer: A. Left atrium
Rationale: The left atrium receives oxygen-rich blood from the
pulmonary veins.
2. Which valve prevents backflow of blood from the left ventricle
to the left atrium?
A. Mitral (bicuspid) valve
B. Tricuspid valve
C. Pulmonary valve
D. Aortic valve
,Correct Answer: A. Mitral (bicuspid) valve
Rationale: Ensures one-way flow from left atrium to left ventricle.
3. Which valve prevents backflow from the right ventricle to the
right atrium?
A. Tricuspid valve
B. Mitral valve
C. Pulmonary valve
D. Aortic valve
Correct Answer: A. Tricuspid valve
Rationale: Separates right atrium and right ventricle.
4. Which valve prevents backflow from the aorta to the left
ventricle?
A. Aortic valve
B. Pulmonary valve
C. Tricuspid valve
D. Mitral valve
Correct Answer: A. Aortic valve
Rationale: Semilunar valve preventing backflow into ventricle.
5. Which valve prevents backflow from pulmonary artery to right
ventricle?
A. Pulmonary valve
B. Aortic valve
,C. Tricuspid valve
D. Mitral valve
Correct Answer: A. Pulmonary valve
Rationale: Semilunar valve preventing backflow into right ventricle.
6. Which blood vessel carries oxygenated blood to the body?
A. Aorta
B. Pulmonary artery
C. Superior vena cava
D. Inferior vena cava
Correct Answer: A. Aorta
Rationale: Distributes oxygen-rich blood from left ventricle to
systemic circulation.
7. Which blood vessel carries deoxygenated blood to the lungs?
A. Pulmonary artery
B. Pulmonary vein
C. Aorta
D. Coronary artery
Correct Answer: A. Pulmonary artery
Rationale: Carries oxygen-poor blood from right ventricle to lungs.
8. Which blood vessels return oxygenated blood to the heart?
A. Pulmonary veins
B. Pulmonary arteries
, C. Superior vena cava
D. Coronary sinus
Correct Answer: A. Pulmonary veins
Rationale: Return oxygen-rich blood from lungs to left atrium.
9. Which blood vessels carry blood away from the heart?
A. Arteries
B. Veins
C. Capillaries
D. Venules
Correct Answer: A. Arteries
Rationale: Arteries transport blood from heart to tissues.
10. Which vessels allow exchange of gases, nutrients, and wastes?
A. Capillaries
B. Veins
C. Arteries
D. Arterioles
Correct Answer: A. Capillaries
Rationale: Thin-walled vessels for diffusion between blood and
tissues.
11. Which layer of the heart wall contains cardiac muscle?
A. Myocardium
B. Endocardium
