What does the hypothalamic hypophyseal portal system connect?
The hypothalamic–hypophysial portal system is the conduit that connects the brain to the anterior pituitary. The portal system is made up of two capillary beds, one in the median eminence and the other in the anterior pituitary.
What is the functional significance of the hypothalamo-hypophyseal portal system?
This hypothalamo-hypophyseal portal circulation provides the mechanism for hypothalamic neuroendocrine (HYPOTHALAMIC HORMONES) regulation of pituitary function and the release of various PITUITARY HORMONES into the systemic circulation to maintain HOMEOSTASIS.
What is Hypothalamo-hypophyseal portal circulation?
In human endocrine system: Modes of hormone transport. One system, the hypothalamic-hypophyseal portal circulation, collects blood from capillaries originating in the hypothalamus and, through a plexus of veins surrounding the pituitary stalk, directs the blood into the anterior pituitary gland.
What are hypophyseal portal vessels?
Hypophyseal portal system also known as hypothalamo-hypophyseal portal system, is the system of blood vessels that links the hypothalamus and the anterior pituitary (adenohypophysis). Hypophyseal portal system allows endocrine communication between the hypothalamus and the anterior pituitary gland.
What is the purpose of the hypophyseal portal system quizlet?
The hypophyseal portal system is a system of blood vessels in the brain that connects the hypothalamus with the anterior pituitary. Its main function is the transport and exchange of hormones to allow a fast communication between both glands.
What is Hypothalamo Hypophyseal complex?
Abstract. The hypothalamo-hypophyseal complex forms the center piece of a regulatory system that, as far as is known at present, plays a decisive role in maintaining homeostasis and equilibrium of many physiological functions.
What is hypothalamo?
The hypothalamus is an area of the brain that produces hormones that control: Body temperature. Heart rate. Hunger.
Where does the hypophyseal portal system drain?
These are released into capillaries (derived from the superior hypophyseal artery) draining into small veins along the infundibulum. The veins, in turn, break up into a second capillary bed within the adenohypophysis.
What hormones pass through the hypophyseal portal?
aldosterone, cortisol, and androgens. These hormones pass through the hypophyseal portal system to act on cells of the anterior pituitary gland.
What is the hypothalamo hypophyseal portal vein quizlet?
Which of the following is released into the hypophyseal portal system?
Terminology Test: Corticotropin-releasing hormone, a tropic hormone released by the hypothalamus, travels via the hypophyseal portal system to the anterior pituitary, where it stimulates the release of adrenocorticotropic hormone.
Does prolactin cause milk secretion?
The prolactin tells the milk glands in your breasts to make more breast milk, and the oxytocin is responsible for getting the breast milk from your breasts to your baby. 2 As long as you continue to breastfeed (or pump) very often, your body will continue to release prolactin, and you will continue to make milk.
What is hypothalamo-hypophyseal portal system?
Hypophyseal portal system also known as hypothalamo-hypophyseal portal system, is the system of blood vessels that links the hypothalamus and the anterior pituitary (adenohypophysis). Hypophyseal portal system allows endocrine communication between the hypothalamus and the anterior pituitary gland.
How do the hypophyseal portal veins work?
The hypophyseal portal veins disperse into a network of capillaries called the secondary plexus and then the hypothalamic hormones leave the bloodstream and enter the interstitial spaces around the cells of the anterior pituitary, where they can affect the activities of these cells. 3
What is the portal system in the brain?
THE PORTAL SYSTEM. The hypothalamic–hypophysial portal system is the conduit that connects the brain to the anterior pituitary. The portal system is made up of two capillary beds, one in the median eminence and the other in the anterior pituitary.
What is the secondary plexus of the hypophyseal portal?
In the anterior pituitary, the hypophyseal portal veins divide again and form another capillary network called the secondary plexus of the hypophyseal portal system. Hypophyseal veins drain blood from the anterior pituitary.