If the hypophyseal portal system is destroyed, the hypothalamus would no longer be able to control the secretion of which of the following hormones?
A) TSH
B) ACTH
C) PRL
D) ADH and OXT
E) TSH, ACTH, PRL

Question

Quizplus · Accepted Answer

The hypophyseal portal system is a network of blood vessels that connect the hypothalamus to the anterior pituitary gland. It allows the hypothalamus to regulate the release of hormones from the anterior pituitary gland. Destruction of the hypophyseal portal system would interfere with the ability of the hypothalamus to control the secretion of hormones from the anterior pituitary gland. TSH, ACTH, and PRL are all hormones secreted by the anterior pituitary gland and regulated by the hypothalamus. Therefore, the destruction of the hypophyseal portal system would result in the loss of control over the secretion of TSH, ACTH, and PRL. ADH and OXT are hormones secreted by the posterior pituitary gland, which is not regulated by the hypophyseal portal system. Therefore, destruction of the hypophyseal portal system would not affect the secretion of ADH and OXT.

If the Hypophyseal Portal System Is Destroyed, the Hypothalamus Would