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 …

The hypophysial portal system begins at the base of the hypothalamus with a group of capillaries (primary capillary plexus) that recombine into small portal veins, which pass down through the pituitary stalk into the anterior pituitary gland.

The hypothalamic-hypophyseal portal system links the hypothalamus and anterior pituitary gland through a system of veins that start and end in capillaries to quickly transport and exchange hormones. It is also located at the base of the brain and is one of two portal systems in humans.

下視丘神經分泌細胞(neurosecretory cell)-->第一微血管網(primary capillary network )-->垂體門脈(hypophyseal portal vein)-->第二微血管網(secondary capillary network)-->垂體靜脈(hypophyseal vein)

On approaching the liver, the portal vein divides into right and left branches which enter the liver parenchyma. It gives off the right and left gastric veins, the cystic vein and the para-umbilical veins as tributaries. The hypophyseal portal system transports hormones from the hypothalamus to the pituitary gland.

2025年1月20日 · 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.

hypophyseal portal system a complex vascular arrangement of two capillary beds that are connected by the hypophyseal portal veins. The primary capillary plexus is located in the hypothalamus and the secondary capillary plexus is located in the anterior pituitary

2024年7月4日 · Blood travels through portal veins in the hypophyseal portal system from capillaries in the hypothalamus to capillaries in the anterior pituitary. In other words, the hormones that are transported by the hypothalamohypophyseal portal system enable communication between the anterior pituitary and hypothalamus and create a crucial link between ...

2024年6月7日 · 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.

In the hypophyseal portal system, blood flows from capillaries in the hypothalamus into portal veins that carry blood to capillaries of the anterior pituitary (see Figure 1). In other words, the hormones carried by the hypothalamo-hypophyseal portal system allow communication between the hypothalamus and anterior pituitary and establish an ...