During periods of declining water levels, blood volume decreases causing a decline in blood pressure. this is referred to as .low blood pressure causes the kidneys to increase the secretion of from the jg cells. the activation of stimulates widespread vasoconstriction, release of adh from the posterior pituitary as well as the adrenal cortex to release aldosterone. aldosterone acts on the of the kidney tubules to reabsorb greater amounts of from the tubular fluid. the release of directly stimulates the of the kidney to increase water reabsorption from the tubular filtrate. the net result of angiotensin ii, aldosterone, and adh cooperatively are an in blood pressure resulting largely from increased blood volume.

Hypotension ,Renin, Angiotensinogen,proximal side,water,ADH,collecting ducts,increase

Explanation:

During periods of decline water levels blood volume decreases causing a decline in blood pressure.This is referred to as hypo-tension.Low blood pressure causes the kidney to increase the secretion of renin from the JG cells.The activation of angiotensinogen stimulates widespread vasoconstriction,release of ADH from the posterior pituitary as well as the adrenal cortex to release aldosterone.Aldosterone acts on the proximal side of kidney tubules to reabsorb greater amount of water from the tubular fluid.The release of ADH directly stimulates the collecting ducts of the kidney to increase water re absorption from the tubular filtrate.The net result of angiotensin 2,aldosterone and ADH cooperatively are an increase in blood pressure largely from increased blood volume.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.