Question

draw the hypothalamo hypophyseal portal system explaining the amplifying effect of the system?

Answer 1

The hypothalamus is located below the thalamus it constitutes the part of the for the brain, it connects the neural and endocrine systems. It responds to the sensory impulses which are received from different receptors by sending out neural or endocrine signals. It contains several cells which produce hormones and they are transported to the neurohypophysis through the axons and the two hormones which are produced are releasing hormones and inhibiting hormones.

Answer 2

Hypophyseal portal system is a system of blood vessels in the brain that connect the Hypothalamus with Anterior Pituitary. It critical function is to transport and exchange hormones to allow quick communication. This structure amplifies effects of small hormones. It does this function due to its fenestrated structure of capillaries which allows rapid exchange between Hypothalamus and Pituitary. And this system only requires very small quantity of hormones to stimulate the an exact effect. (Normally as blood flows through a capillary bed there are only one set of capillaries within that bed. On one side of a normal capillary bed there is an artery (metarteriole to be specific) and a draining vein (venule). So blood flows right in and right out of the one set of capillaries. With a portal system blood is circulated into the first capillary bed by an artery and is usually called the primary capillary bed. Instead of the blood flowing directly into the venous circulation it instead flows through a portal vein and into a second capillary bed, called the secondary capillary plexus. Connected to the secondary plexus is a venule for drainage of blood into the venous circulation. This is a good way of transporting materials directly from one tissue to another without having to travel the entire length of the circulatory system first.) It secrets releasing as well inhibiting hormones with each having different end results. *If this helps, please mark as Brainliest*. Also attached is the standard textbook image for the reference.