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Alcohol inhibits the secretion of what hormone?
antidiuretic hormone(ADH)
What are the causes of low sodium and symptoms?
Low Sodium with high potasium can be caused by addison's disease. Low Sodium with low potasium is caused by having too much water in the blood. (fluid overload) This can be due to kidney problems or innapropriate secretion of a hormone called anti-diuretic hormone (ADH) which reduces urine volume. Treatment often involves fluid restriction and some specialists use ADH antagonists
What stimulates adh secretion from the posterior pituitary?
increased plasma osmolality
What does the posterior pituitary gland control?
ADH secretion and oxytocim release
What medical condition would describe an inadequate secretion of ADH?
Diabetes insipidus
What causes hypo-secretion of ADH?
diabetes insipidus
What are the effects of hyper secretion of ADH in urine quantity and component?
ADH is short for Anti Diuretic Hormone and it prevents excess water loss. As such, a hyper-secretion of ADH will result in less urine by volume, and the urine will have a lower concentration of water. Conversely, it will have a higher concentration of solutes (Sodium, Potassium, Urea, etc.)
Changes in blood osmotic pressure would most affect the secretion of?
ADH (Antidiuretic Hormone)
Does alcohol alter ADH and Aldosterone?
Alcohol (ethanol) acts on the hypothalamus to inhibit ADH secretion. This leads to diuresis and the typical repeated trips to the bathroom while at the bar drinking.
Neurohypophyseal secretion of stimulates formation of concentrated urine?
Neurohypophyseal secretion of antidiuretic hormone or ADH stimulates the formation of concentrated urine. This hormone is also known as argipressin.
What is ADH and how is its secretion controlled by negative feedback?
ADH is know as vassopressin and is produces by the hypothalamus and stored in the posterior pituitary. It is a peptide neurohormone of about 9 amino acids in length. ADH stands for anti diuretic hormone and prevents excess urine formation by reabsorbing water. When osmoteceptor cells in the hypothalamus senses an increase in osmolaritg in the ECF, SON and PVN cells are stimulated to secrete ADH. Also baroreceptors in the large arteries sense decreases in blood pressure and blood volume due to fluid loss. This also stimulus ADH secretion in order to conserve water. Interestingly, alcohol inhibits ADH secretion, therefore producing very dilute urine which stimulates thirst.
What is the effect of alcohol to antidiuretic hormone secretion?
Ethyl Alcohol prevents the secretion of Anti-diuretic hormone from the the posterior pituitary, resulting in water and sodium loss and subsequent diuresis.
