ATI TEAS Science (Anatomy &
Physiology) Practice Test
Questions And Correct
Answers (Verified Answers)
Plus Rationales 2025/2026
Q&A | Instant Download Pdf
1. Which organ is primarily responsible for filtering blood?
A. Liver
B. Heart
C. Kidneys
D. Lungs
Answer: C. Kidneys
Rationale: The kidneys filter waste products and excess
substances from the blood to form urine.
2. What is the main function of red blood cells?
A. Fight infection
B. Carry oxygen
C. Produce hormones
D. Clot blood
,Answer: B. Carry oxygen
Rationale: Red blood cells contain hemoglobin, which
transports oxygen throughout the body.
3. Which part of the brain controls balance and
coordination?
A. Cerebrum
B. Cerebellum
C. Medulla
D. Hypothalamus
Answer: B. Cerebellum
Rationale: The cerebellum is responsible for motor
coordination and balance.
4. The basic unit of life is the:
A. Tissue
B. Organ
C. Cell
D. Organ system
Answer: C. Cell
Rationale: All living organisms are made up of cells.
5. Which blood vessel carries blood away from the heart?
A. Vein
B. Artery
C. Capillary
,D. Venule
Answer: B. Artery
Rationale: Arteries carry oxygenated blood away from the
heart (except pulmonary artery).
6. What is the primary function of the respiratory system?
A. Digest food
B. Pump blood
C. Exchange gases
D. Remove toxins
Answer: C. Exchange gases
Rationale: The respiratory system exchanges oxygen and
carbon dioxide.
7. Which hormone regulates blood sugar levels?
A. Estrogen
B. Insulin
C. Thyroxine
D. Adrenaline
Answer: B. Insulin
Rationale: Insulin lowers blood glucose levels.
8. Where does gas exchange occur in the lungs?
A. Trachea
B. Bronchi
C. Alveoli
, D. Diaphragm
Answer: C. Alveoli
Rationale: Alveoli are tiny air sacs where oxygen and carbon
dioxide are exchanged.
9. The skeletal system’s primary function is:
A. Produce hormones
B. Support and protect body
C. Digest food
D. Pump blood
Answer: B. Support and protect body
Rationale: The skeleton supports the body and protects
organs.
10. Which organ produces bile?
A. Pancreas
B. Liver
C. Stomach
D. Gallbladder
Answer: B. Liver
Rationale: The liver produces bile, which helps digest fats.
11. What type of muscle is found in the heart?
A. Skeletal
B. Smooth
C. Cardiac
Physiology) Practice Test
Questions And Correct
Answers (Verified Answers)
Plus Rationales 2025/2026
Q&A | Instant Download Pdf
1. Which organ is primarily responsible for filtering blood?
A. Liver
B. Heart
C. Kidneys
D. Lungs
Answer: C. Kidneys
Rationale: The kidneys filter waste products and excess
substances from the blood to form urine.
2. What is the main function of red blood cells?
A. Fight infection
B. Carry oxygen
C. Produce hormones
D. Clot blood
,Answer: B. Carry oxygen
Rationale: Red blood cells contain hemoglobin, which
transports oxygen throughout the body.
3. Which part of the brain controls balance and
coordination?
A. Cerebrum
B. Cerebellum
C. Medulla
D. Hypothalamus
Answer: B. Cerebellum
Rationale: The cerebellum is responsible for motor
coordination and balance.
4. The basic unit of life is the:
A. Tissue
B. Organ
C. Cell
D. Organ system
Answer: C. Cell
Rationale: All living organisms are made up of cells.
5. Which blood vessel carries blood away from the heart?
A. Vein
B. Artery
C. Capillary
,D. Venule
Answer: B. Artery
Rationale: Arteries carry oxygenated blood away from the
heart (except pulmonary artery).
6. What is the primary function of the respiratory system?
A. Digest food
B. Pump blood
C. Exchange gases
D. Remove toxins
Answer: C. Exchange gases
Rationale: The respiratory system exchanges oxygen and
carbon dioxide.
7. Which hormone regulates blood sugar levels?
A. Estrogen
B. Insulin
C. Thyroxine
D. Adrenaline
Answer: B. Insulin
Rationale: Insulin lowers blood glucose levels.
8. Where does gas exchange occur in the lungs?
A. Trachea
B. Bronchi
C. Alveoli
, D. Diaphragm
Answer: C. Alveoli
Rationale: Alveoli are tiny air sacs where oxygen and carbon
dioxide are exchanged.
9. The skeletal system’s primary function is:
A. Produce hormones
B. Support and protect body
C. Digest food
D. Pump blood
Answer: B. Support and protect body
Rationale: The skeleton supports the body and protects
organs.
10. Which organ produces bile?
A. Pancreas
B. Liver
C. Stomach
D. Gallbladder
Answer: B. Liver
Rationale: The liver produces bile, which helps digest fats.
11. What type of muscle is found in the heart?
A. Skeletal
B. Smooth
C. Cardiac
