Anatomy & Physiology Final Exam 2026 | Illustrated
Study Questions & Rationales
1. Which organelle is known as the “powerhouse of the cell”?
A. Ribosome
B. Nucleus
C. Mitochondrion
D. Golgi apparatus
Correct Answer: C. Mitochondrion
Rationale:
Mitochondria produce ATP through cellular respiration, supplying energy for cellular
activities. Ribosomes synthesize proteins, the nucleus stores DNA, and the Golgi apparatus
packages proteins.
2. What is the primary function of red blood cells?
A. Fight infection
B. Carry oxygen
C. Produce antibodies
D. Form blood clots
Correct Answer: B. Carry oxygen
Rationale:
Red blood cells contain hemoglobin, which binds oxygen and transports it throughout the
body. White blood cells fight infection, platelets assist in clotting, and antibodies are
produced by plasma cells.
3. Which part of the brain controls balance and coordination?
A. Cerebrum
B. Medulla oblongata
C. Cerebellum
D. Hypothalamus
Correct Answer: C. Cerebellum
Rationale:
,The cerebellum coordinates voluntary movement, posture, and balance. The cerebrum
handles higher thinking, the medulla controls vital functions, and the hypothalamus
regulates homeostasis.
4. Which chamber of the heart pumps oxygenated blood to the body?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: D. Left ventricle
Rationale:
The left ventricle pumps oxygen-rich blood into the aorta for systemic circulation. The right
ventricle sends deoxygenated blood to the lungs.
5. What is the functional unit of the kidney?
A. Alveolus
B. Neuron
C. Nephron
D. Osteon
Correct Answer: C. Nephron
Rationale:
Nephrons filter blood, remove waste, and regulate fluid balance. Alveoli are found in lungs,
neurons in the nervous system, and osteons in bone tissue.
6. Which hormone lowers blood glucose levels?
A. Glucagon
B. Cortisol
C. Insulin
D. Epinephrine
Correct Answer: C. Insulin
Rationale:
, Insulin promotes glucose uptake into cells, decreasing blood glucose levels. Glucagon raises
blood sugar, while cortisol and epinephrine increase glucose during stress.
7. Which type of muscle is involuntary and striated?
A. Skeletal muscle
B. Smooth muscle
C. Cardiac muscle
D. Tendon tissue
Correct Answer: C. Cardiac muscle
Rationale:
Cardiac muscle is involuntary and striated, found only in the heart. Skeletal muscle is
voluntary, while smooth muscle is involuntary but nonstriated.
8. What is the largest organ in the human body?
A. Liver
B. Brain
C. Skin
D. Lungs
Correct Answer: C. Skin
Rationale:
The skin is the body’s largest organ and provides protection, temperature regulation, and
sensation.
9. Which blood vessels carry blood away from the heart?
A. Veins
B. Capillaries
C. Arteries
D. Venules
Correct Answer: C. Arteries
Rationale:
Arteries transport blood away from the heart. Veins return blood to the heart, while
capillaries allow exchange of gases and nutrients.
Study Questions & Rationales
1. Which organelle is known as the “powerhouse of the cell”?
A. Ribosome
B. Nucleus
C. Mitochondrion
D. Golgi apparatus
Correct Answer: C. Mitochondrion
Rationale:
Mitochondria produce ATP through cellular respiration, supplying energy for cellular
activities. Ribosomes synthesize proteins, the nucleus stores DNA, and the Golgi apparatus
packages proteins.
2. What is the primary function of red blood cells?
A. Fight infection
B. Carry oxygen
C. Produce antibodies
D. Form blood clots
Correct Answer: B. Carry oxygen
Rationale:
Red blood cells contain hemoglobin, which binds oxygen and transports it throughout the
body. White blood cells fight infection, platelets assist in clotting, and antibodies are
produced by plasma cells.
3. Which part of the brain controls balance and coordination?
A. Cerebrum
B. Medulla oblongata
C. Cerebellum
D. Hypothalamus
Correct Answer: C. Cerebellum
Rationale:
,The cerebellum coordinates voluntary movement, posture, and balance. The cerebrum
handles higher thinking, the medulla controls vital functions, and the hypothalamus
regulates homeostasis.
4. Which chamber of the heart pumps oxygenated blood to the body?
A. Right atrium
B. Right ventricle
C. Left atrium
D. Left ventricle
Correct Answer: D. Left ventricle
Rationale:
The left ventricle pumps oxygen-rich blood into the aorta for systemic circulation. The right
ventricle sends deoxygenated blood to the lungs.
5. What is the functional unit of the kidney?
A. Alveolus
B. Neuron
C. Nephron
D. Osteon
Correct Answer: C. Nephron
Rationale:
Nephrons filter blood, remove waste, and regulate fluid balance. Alveoli are found in lungs,
neurons in the nervous system, and osteons in bone tissue.
6. Which hormone lowers blood glucose levels?
A. Glucagon
B. Cortisol
C. Insulin
D. Epinephrine
Correct Answer: C. Insulin
Rationale:
, Insulin promotes glucose uptake into cells, decreasing blood glucose levels. Glucagon raises
blood sugar, while cortisol and epinephrine increase glucose during stress.
7. Which type of muscle is involuntary and striated?
A. Skeletal muscle
B. Smooth muscle
C. Cardiac muscle
D. Tendon tissue
Correct Answer: C. Cardiac muscle
Rationale:
Cardiac muscle is involuntary and striated, found only in the heart. Skeletal muscle is
voluntary, while smooth muscle is involuntary but nonstriated.
8. What is the largest organ in the human body?
A. Liver
B. Brain
C. Skin
D. Lungs
Correct Answer: C. Skin
Rationale:
The skin is the body’s largest organ and provides protection, temperature regulation, and
sensation.
9. Which blood vessels carry blood away from the heart?
A. Veins
B. Capillaries
C. Arteries
D. Venules
Correct Answer: C. Arteries
Rationale:
Arteries transport blood away from the heart. Veins return blood to the heart, while
capillaries allow exchange of gases and nutrients.
