Zoology-Hormones
NEET Zoology Hormones MCQ Question
Type: MCQ-conceptual-Hard-Class 11
Which of the following statements about hormones and their functions are correct?
A
Adrenaline and noradrenaline increase heart rate and are secreted by the adrenal medulla.
B
Insulin is secreted by the pancreas and increases blood glucose levels.
C
The pituitary gland's pars intermedia secretes only growth hormone.
D
Atrial natriuretic factor (ANF) is secreted by the heart and decreases blood pressure.
Correct Answer
Option A
Detailed Explanation
Adrenaline and noradrenaline, secreted by the adrenal medulla, increase heart rate and are known as emergency hormones. Insulin decreases blood glucose levels, not increases. The pars intermedia secretes melanocyte stimulating hormone (MSH), not growth hormone. ANF decreases blood pressure, which is correct.
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