Which of the following hormones are tropic hormones? (Select one that doesn't apply.)

Rationale

Antidiuretic hormone is not a tropic hormone.

Tropic hormones are hormones that stimulate other glands to release their hormones. Antidiuretic hormone (ADH), also known as vasopressin, doesn't stimulate other glands to release their hormones but rather directly targets the kidneys to regulate water balance in the body.

A (Somatotropin) YOUR ANSWER

Somatotropin, also known as growth hormone, is a tropic hormone because it stimulates the liver and other tissues to produce insulin-like growth factor (IGF-1), which promotes growth and development. This hormone is produced and released by the anterior pituitary gland and has wide-ranging effects on various tissues and organs in the body.

B (Follicle-stimulating hormone) YOUR ANSWER

Follicle-stimulating hormone (FSH) is a gonadotropic hormone produced by the anterior pituitary gland. It stimulates the growth and maturation of eggs in females and sperm production in males. Therefore, it is considered a tropic hormone as it stimulates the gonads to release their hormones.

C (Antidiuretic hormone) CORRECT

Antidiuretic hormone (ADH), also known as vasopressin, is not a tropic hormone. It is produced by the hypothalamus and stored in and released from the posterior pituitary gland. ADH directly targets the kidneys to concentrate the urine by reabsorbing more water, hence regulating water balance in the body. It doesn't stimulate other glands to release their hormones.

D (Thyroid-stimulating hormone) YOUR ANSWER

Thyroid-stimulating hormone (TSH) is a tropic hormone produced by the anterior pituitary gland. It stimulates the thyroid gland to release thyroid hormones (triiodothyronine (T3) and thyroxine (T4)), which regulate metabolism, growth, and development. Therefore, it is considered a tropic hormone as it stimulates the thyroid gland to release its hormones.

Conclusion

Tropic hormones are hormones that stimulate other glands to release their hormones. Somatotropin, follicle-stimulating hormone, and thyroid-stimulating hormone are all tropic hormones as they stimulate other glands to release their hormones. On the other hand, antidiuretic hormone is not a tropic hormone as it directly targets the kidneys to regulate water balance in the body and doesn't stimulate other glands to release their hormones.

Which of the following hormones are tropic hormones? (Select one that doesn't apply.)

Antidiuretic hormone is not a tropic hormone.

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