HESI A2 Anatomy and Physiology Questions and correct Answers (100% VERIFIED)| 2025/2026

HESI A2 Anatomy and Physiology
Questions and correct Answers
1. How many cervical vertebrae are in the skeletal column?

A. 5

B. 7

C. 12

D. 33

Answer: B

2. What is the length of the spinal cord?

A. 12 inches

B. 18 inches

C. 24 inches

D. 36 inches

Answer: B

3. How many pairs of nerves exit the spinal cord?

A. 12 pairs

B. 24 pairs

C. 31 pairs

D. 33 pairs

Answer: C

4. What percentage of blood is plasma?

A. 45%

B. 50%

C. 55%

,D. 60%

Answer: C

5. Which valve is on the right side of the heart?

A. Bicuspid

B. Tricuspid

C. Mitral

D. Aortic

Answer: B

6. Which valve is on the left side of the heart?

A. Bicuspid

B. Tricuspid

C. Semilunar

D. Aortic

Answer: A

7. What is the enzyme in saliva that starts complex carbohydrate digestion?

A. Pepsin

B. Lipase

C. Amylase

D. Trypsin

Answer: C

8. How many bones make up the skeletal column?

A. 24

B. 28

C. 33

D. 206

,Answer: C

9. Where is testosterone produced?

A. Seminiferous tubules

B. Epididymis

C. Interstitial cells

D. Vas deferens

Answer: C

10. What is the usual second messenger used by protein hormones?

A. Adenosine monophosphate (AMP)

B. ATP

C. GTP

D. cGMP

Answer: A

11. Which gland is considered the "master gland"?

A. Thyroid

B. Adrenal

C. Pituitary

D. Pineal

Answer: C

12. How many lumbar vertebrae are in the skeletal column?

A. 3

B. 5

C. 7

D. 12

Answer: B

, 13. How many thoracic vertebrae are in the skeletal column?

A. 5

B. 7

C. 12

D. 14

Answer: C

14. What is the name for the contraction phase of the cardiac cycle?

A. Diastole

B. Systole

C. Asystole

D. Presystole

Answer: B

15. What is the name for the relaxation phase of the cardiac cycle?

A. Diastole

B. Systole

C. Asystole

D. Presystole

Answer: A

16. At which day of the female cycle does a surge of LH occur?

A. Day 7

B. Day 14

C. Day 21

D. Day 28

Answer: B

17. In which renal structure does filtration actually occur?