Endocrine System MCQs with Answers

Cholesterol is an important precursor in the biosynthesis of ?

• A.Vitamin D
• B.Steroid hormones
• C.Bile acids
• D.Both A and B

Adrenal gland is situated at the apex of each _?

• A.Lung
• B.Kidney
• C.Liver
• D.Spleen

What are the functions of thyroid hormone in the body?

• A.Regulates growth, development, and metabolism
• B.Controls blood sugar levels only
• C.Regulates calcium and phosphate balance
• D.Produces red blood cells in bone marrow

In which hormone is iodine found?

• A.Insulin
• B.Thyroid hormone
• C.Adrenaline
• D.Estrogen

Growth of muscles in female rat is linked with ?

• A.Thyroxine
• B.Estrogen
• C.Somatotropin
• D.Prolactin

After removal of both ovaries, which hormone decreases significantly?

• A.Insulin
• B.Estrogen
• C.Thyroxine
• D.Progesterone only

The gonads are the target organ for ?

• A.FSH (Follicle Stimulating Hormone)
• B.LH (Luteinizing Hormone)
• C.TSH (Thyroid Stimulating Hormone)
• D.Both A & B

Which of the following functions are regulated by hormones released from gonads?

• A.Growth and metabolism
• B.Reproductive functions and secondary sexual characteristics
• C.Blood sugar regulation
• D.All of these

Which hormone lowers blood glucose levels?

• A.Glucagon
• B.Insulin
• C.Cortisol
• D.Thyroxine

Which of the following organs is NOT classified as a major endocrine organ?

• A.Pituitary gland
• B.Thyroid gland
• C.Spleen
• D.Adrenal gland