NEET PG DENTAL EXAM

HISTOLOGY

URINARY SYSTEM

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: -Osmoreceptors in the hypothalamus regulate the amount of ADH released in response to changes in the osmotic pressure of plasma.

Detailed explanation-3: -ADH travels in the bloodstream to the kidneys. Once at the kidneys, ADH changes the kidneys to become more permeable to water by temporarily inserting water channels, aquaporins, into the kidney tubules. Water moves out of the kidney tubules through the aquaporins, reducing urine volume.

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