Question

Match the hormones listed in Column I with their primary source tissues in Column II and the primary target tissues listed in Column III.

• A. P-(iii)-b, Q-(iv)-c, R-(ii)-a, S-(i)-d
• B. P-(iv)-c, Q-(iii)-b, R-(ii)-a, S-(i)-d
• C. P-(iv)-b, Q-(iii)-d, R-(ii)-c, S-(i)-a
• D. P-(iii)-b, Q-(iv)-c, R-(ii)-d, S-(i)-a

Hint:

Understanding the source and target tissues of hormones is key to matching them correctly. Hormones from the pituitary act on various tissues, and hormones like epinephrine come from specialized cells like those in the chromaffin tissue.

Answer 1

The Correct Option is C

Step 1: Understanding the hormones and their sources.
- Epinephrine is released from the chromaffin tissue (adrenal medulla) and acts primarily on the heart.
- Prolactin is produced in the pituitary gland and affects the pigeon’s crop for milk production.
- Calcitonin is released from the thyroid and targets the bone to regulate calcium levels.
- Thyrotropin-releasing hormone (TRH) is released by the hypothalamus and stimulates the pituitary.
Step 2: Analyzing the options.
- (A) Incorrect, the matches do not align with the primary source tissues and targets.
- (B) Incorrect, while some matches are correct, others are incorrect.
- (C) Correct, the correct matches are:
- Epinephrine from chromaffin tissue acting on the heart.
- Prolactin from the pituitary acting on the pigeon’s crop.
- Calcitonin from the thyroid acting on the bone.
- Thyrotropin releasing hormone from the hypothalamus acting on the pituitary.
- (D) Incorrect, as the matches do not align with the correct source tissues.
Step 3: Conclusion.
The correct match is (C) P-(iv)-b, Q-(iii)-d, R-(ii)-c, S-(i)-a.