Physiology of ADH

: Physiology of ADH

p : language the term must be about the physiology of Anti-diuretic Hormone (ADH ) which is a vasopressin . It must explain everything about this hormone and how it works in the body , from a general to specific explanation about the physiology of ADH in the body . How does it work what does it do , how is it maintained , what triggers it , etc basically , the entire is about the physiology of Anti-diuretic Hormone (ADH ) in the human body

Also , the reference sources used must be peer reviewed articles or journal

articles , and those articles can be found online as well Anti-diuretic Hormone (ADH ) or vasopressin is hormone (chemical messenger ) containing nine amino acids (nano-peptide ) and is produced by the supra-optic (five-sixth of the para-ventricular nuclei (one-sixth of the hypothalamus (Kai Robinson . 2004 . It is transferred to the neurohypophysis (or posterior pituitary gland ) through the hypothalamic-hypohyseal tract (a nerve tract , where it is stored in the nerve endings and is secreted , as and when required . When the osmotic pressure of the plasma is increased following decreased quantity of water and increased quantity of sodium , ADH is released (ACP Community The supra-optic region of the hypothalamus stimulates the posterior pituitary to secrete ADH , following activation of the osmoreceptors (specialized nerve cells that are activated when the quantity of water in the plasma is decreased and stimulate the hypothalamus to release ADH (Kai Robinson . 2004 . The osmoreceptors are also located in third ventricle (organum vasculosum (ACP Community . The internal carotid artery contains osmoreceptor cells which supplies the hypothalamus with impulses for release of the ADH . Volume receptors are present in the chest which also stimulates the hypothalamus . The intensity of the impulses to the hypothalamus increases when the osmotic pressure rises in the blood or in the extra-cellular fluids . The resultant is that increased amounts of ADH are released by the posterior pituitary and hence the circulatory volume of the blood is reduced (Kai Robinson 2004 . In the left atrium of the heart , stretch receptors are present When the volume of the blood is increased , the stretch receptors pick up the signals and sent it to the hypothalamus through the Vagus Nerve These signals inhibit release of ADH (C .G . Chatterjee . 1994 , 1-33 When the neurohypophysis is stimulated , the ADH is secreted by the process of exocytosis into the blood capillaries from where it is transported to the receptors (ACP Community

Sodium plays a very important role in the body by maintaining the osmotic pressure of the plasma . Several metabolic processes with relation to sodium such as excretion , retention and shifts , play a very important role in the osmotic pressure of the plasma (ACP Community Studies conducted by Gauer and Henry (1963 ) demonstrate that the breathing pressure (of the lungs ) could also play an important role in the release of ADH . In negative breathing pressure , the ADH levels were decreased , whereas in a positive breathing pressure , the ADH levels were increased (C .G . Chatterjee . 1994 , pp . 4-52...