AP BIOLOGY

ANIMAL PHYSIOLOGY

OSMOREGULATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
ADH is released from the pituitary gland into the:
A
Circulatory system
B
Endocrine system
C
Nervous system
D
All of the above
Explanation: 

Detailed explanation-1: -The release of anti-diuretic hormone from the pituitary gland into the bloodstream is controlled by a number of factors. A decrease in blood volume or low blood pressure, which occurs during dehydration or a haemorrhage, is detected by sensors (baroreceptors) in the heart and large blood vessels.

Detailed explanation-2: -ADH is a substance produced naturally in an area of the brain called the hypothalamus. It is then released by the pituitary gland at the base of the brain.

Detailed explanation-3: -Antidiuretic hormone is made by a part of the brain called the hypothalamus and is secreted into the blood by the pituitary gland. Certain types of tumors may release high amounts of antidiuretic hormone, which can cause low levels of sodium in the blood and the body to retain water.

Detailed explanation-4: -The synthesis of ADH occurs in the supraoptic and paraventricular nuclei in the hypothalamus. It is then transported to the posterior pituitary gland via the neurohypophysial capillaries.

Detailed explanation-5: -ADH is stored in neurons within the hypothalamus. These neurons express osmoreceptors that are exquisitely responsive to blood osmolarity and respond to changes as little as two mOsm/L. [2] Therefore, slight elevations in osmolarity result in the secretion of ADH.

There is 1 question to complete.