Question Video: Recalling What a Tropic Hormone Is Biology

Thyrotropin in as an example of a tropic hormone released from the pituitary gland. What is a tropic hormone? [A] A hormone that is insoluble in the body. [B] A hormone that is transmitted via the lymphatic system rather than the bloodstream. [C] A hormone that is only released in response to stress. [D] A hormone that influences the activity and secretions of other endocrine glands.

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Video Transcript

Thyrotropin in as an example of a tropic hormone released from the pituitary gland. What is a tropic hormone? (A) A hormone that is insoluble in the body. (B) A hormone that is transmitted via the lymphatic system rather than the bloodstream. (C) A hormone that is only released in response to stress. Or (D) a hormone that influences the activity and secretions of other endocrine glands.

The pituitary gland is often referred to as the master gland, mainly because this endocrine gland releases hormones that target other endocrine glands in the body. We can see some of these endocrine glands in this diagram of the endocrine system. Through their effects on other endocrine glands, pituitary gland hormones can control the release of various other hormones and indirectly control many more functions of the body. One example of a pituitary hormone is thyrotropin, which you might know better as TSH, or thyroid-stimulating hormone.

Thyrotropin stimulates the thyroid gland to control the secretion of various thyroid hormones. In turn, these hormones regulate many target tissues in the body. Thyrotropin in is a typical example of a tropic hormone, which is a hormone that influences the activity and secretion of other endocrine glands. The suffix -tropin and the adjective tropic mean in ancient Greek to change or to turn. So if you meet the suffix in the name of a hormone, you can guess its function.

Thyrotropin is a hormone that changes the activity of the thyroid. Gonadotropin is a hormone that changes the activity of the gonads. And ACTH, which is short for adrenocorticotropic hormone, is a hormone that changes the activity of the cortex of the adrenal glands. Therefore, we’ve worked out the answer to our question that a tropic hormone is a hormone that influences the activity and secretions of other endocrine glands.

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