HESI Endocrine System A&P Exam Newest 2026 Questions and Correct Detailed Answers with Rationales Already Graded A+

HESI Endocrine System A&P Exam Newest 2026 Questions and
Correct Detailed Answers with Rationales Already Graded A+




KEY CONCEPTS

 Endocrine system = hormone regulation
 Hormones travel through bloodstream
 Feedback system = negative feedback most common
 Major glands: pituitary, thyroid, adrenal, pancreas



SECTION A: BASIC ENDOCRINE FUNCTION



1.

The primary function of the endocrine system is to:

A. Transport oxygen
B. Produce hormones
C. Digest food
D. Filter blood

Answer: B

Rationale:
The endocrine system secretes hormones that regulate body functions.



2.

Hormones are transported by:

, A. Lymph system
B. Bloodstream
C. Nerves only
D. Digestive tract

Answer: B

Rationale:
Hormones travel through blood to target organs.



3.

Which feedback mechanism is most common?

A. Positive feedback
B. Negative feedback
C. Neutral feedback
D. Random feedback

Answer: B

Rationale:
Negative feedback maintains homeostasis.



SECTION B: PITUITARY GLAND



4.

The pituitary gland is known as the:

A. Master gland
B. Stress gland
C. Sugar gland
D. Thyroid gland

Answer: A