The neurons that make AVP, in the hypothalamic paraventricular nuclei ( PVN ), are themselves osmoreceptors, but they also receive synaptic input from other osmoreceptors located in regions adjacent to the anterior wall of the third ventricle.
12.
The neurons that make AVP, in the hypothalamic paraventricular nuclei ( PVN ), are themselves osmoreceptors, but they also receive synaptic input from other osmoreceptors located in regions adjacent to the anterior wall of the third ventricle.
13.
:ADH secretion is stimulated by osmoreceptors in the hypothalamus, which respond, as the name suggests, to changes in plasma osmolarity which would change if blood volume decreased / increased or sodium chloride concentration were elevated or depleted . ( well the ions ).
14.
Clusters of cells ( osmoreceptors ) in the organum vasculosum of the lamina terminalis ( OVLT ) and subfornical organ ( SFO ), which lie outside of the blood brain barrier can detect the concentration of blood plasma and the presence of angiotensin II in the blood.
15.
Because the hypothalamus / osmoreceptor system ordinarily works well to cause drinking or urination to restore the body's sodium concentrations to normal, this system can be used in medical treatment to regulate the body's total fluid content, by first controlling the body's sodium content.
16.
This dilution, otherwise described as a reduction in plasma osmolality, is detected by osmoreceptors in the hypothalamus of the brain and these then switch off the release of ADH . The decreasing concentration of ADH effectively inhibits the aquaporins in the collecting ducts and distal convoluted tubules in the nephrons of the kidney.
17.
Kidneys play a very large role in human osmoregulation by regulating the amount of water reabsorbed from glomerular filtrate in kidney tubules, which is controlled by hormones such as antidiuretic hormone ( ADH ), aldosterone, and angiotensin II . For example, a decrease in water potential of detected by osmoreceptors in hypothalamus, which stimulates ADH release from pituitary gland to increase the permeability of the wall of the collecting ducts in the kidneys.
