Question

30 Write the names and role of hormones of
neurohypophysis of pituitary gland.​

Answer 1

Answer:

Pituitary Gland: It is also called as Hypohysis. It is located in a saddle-shaped space in the Sphenoid Bone called the Sella Tursica which is located in the base of the brain in the frontal lobe.

The hormones secreted by the Pituitary gland are either secreted by the Hypothalamus or are stimulated by the hormones secreted by the Hypothalamus for ex: Thyrotropin-releasing hormone which stimulates the release of TSH.

Hypothalamus is a tiny part of the brain which is attached to the pituitary gland by means of the infundibular (hypophyseal) stalk. Hypothalamus is considered as the “Master controller” or “Master gland” as its main function is:

Releasing Hormones

Inhibiting Hormones

Pituitary Gland is one of the major and most important organs in the human body, although small in size (Size of a Pea) it is very important in function as the hormones produced from the gland travel throughout the body and are either responsible for the function of certain organs like (TSH helps in producing Thyroid gland to produce T3, T4 etc) or helps in stimulation certain functions in the body.

Answer 2

Answer:

The pituitary gland is divided into two sections: the anterior lobe and the posterior lobe. The neurohypophysis is the name given to the posterior lobe (part) of the pituitary gland. The neurohypophysis stores and releases several hormones created by the hypothalamus - a small region at the base of the brain.

The antidiuretic hormone (ADH) is a hormone that is released from this part of the gland which is responsible for controlling water reabsorption and retention. When a patient suffers from the syndrome of inappropriate antidiuretic hormone secretion (SIADH) - where the body makes too much ADH - the kidneys retain too much water causing low levels of electrolytes, such as sodium. If your body doesn’t have enough sodium, it causes uncomfortable symptoms such as muscle weakness, irritability and restlessness, loss of appetite, cramps, vomiting, seizures and coma.