The hypophyseal portal system is a system of blood vessels in the microcirculation at the base of the brain, connecting the hypothalamus with the anterior pituitary. Its main function is to quickly transport and exchange hormones between the hypothalamus arcuate nucleus and …

Dec 16, 2022 · Known as the hypophyseal portal system, this structure allows the hypothalamus to communicate with the anterior pituitary via the release of neurotransmitters into the bloodstream. Posterior Pituitary. The infundibulum and posterior pituitary gland receive a rich blood supply from many arteries. Of these, the major vessels are the superior ...

Jan 20, 2025 · The hypophyseal portal system is a vascular system made of tiny blood vessels that connect the adenohypophysis to the hypothalamus. The capillaries and venules of the portal system are fenestrated which allows the smooth exchange of molecules between the blood vessels and the cells of the anterior pituitary.

Jul 5, 2010 · A portal circulation is one which connects two capillary beds but does not receive a direct arterial supply nor drain into a venous system. This complex vascular network means that the anterior pituitary can receive blood containing hormones from the hypothalamus as well as receiving substances which are circulating in the peripheral circulation.

Learn at your own pace with bite-sized, verified content. Which endocrine structure synthesizes hormones involved with fluid balance and smooth muscle contraction? Drag the labels onto the diagram to identify the structural components of the hypophyseal portal system.

The hypothalamus is linked to the pituitary gland by both nerve fiber tracts and a profuse network of capillaries called the hypothalamic-pituitary portal system (aka hypophyseal portal system). Look at the pathway of the blood in the picture below: On the hypothalamus, blood flows from the arteries (in red) to the anterior lobe of the ...

Start studying Hypothalamo-hypophyseal portal system. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Start studying Hypothalamo-hypophyseal portal system- LAB. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Jun 7, 2024 · The hypophyseal portal system is a system of blood vessels in the microcirculation at the base of the brain, connecting the hypothalamus with the anterior pituitary. Its main function is to quickly transport and exchange hormones between the hypothalamus arcuate nucleus and anterior pituitary gland.

This network, called the hypophyseal portal system, allows hypothalamic hormones to be transported to the anterior pituitary without becoming diluted in systemic circulation. This portal system begins with a primary capillary plexus originating from the superior hypophyseal artery, a branches of the internal carotid artery.