ANATOMY

GENERAL ANATOMY

URINARY SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
ADH is released by the pituitary gland when ____
A
The blood is too concentrated
B
The blood has the same osmolarity as urine
C
The blood is too dilute
D
The blood is too weak
Explanation: 

Detailed explanation-1: -Secretion of anti-diuretic hormone also occurs if the concentration of salts in the bloodstream increases, for example as a result of not drinking enough water on a hot day. This is detected by special nerve cells in the hypothalamus (osmoreceptors) which simulate anti-diuretic hormone release from the pituitary. .

Detailed explanation-2: -Baroreceptors in the left atrium, carotid artery and aortic arch detect changes in arterial blood volume. If blood pressure reduces, baroreceptors relay this to the vagus nerve, which sends afferent signals that directly stimulates the release of ADH from the posterior pituitary.

Detailed explanation-3: -ADH constantly regulates and balances the amount of water in your blood. Higher water concentration increases the volume and pressure of your blood. Osmotic sensors and baroreceptors work with ADH to maintain water metabolism. Osmotic sensors in the hypothalamus react to the concentration of particles in your blood.

There is 1 question to complete.