Determine where the following substances are absorbed/reabsorbed in the nephron:

Question

Determine where the following substances are absorbed/reabsorbed in the nephron: a) water: ___________ b) salts: ___________ c) metabolic waste: ___________ d) hormones: ___________ e) drugs ___________ Determine where the following substances are secreted in the nephron: a) water: ___________ b) H+: ___________ c) K+: ___________ d) creatinine ___________ Blood vessel that lays over the nephron collecting reabsorbed substance: ___________. EPO, released by the _______ cells of the kidney, goes to the _______ where erythrocyte are release into the blood vessels increasing their size and subsequently the overall blood pressure. Renin, released by the _______ & _______ cells of the kidney, travels to the _______ where _______ is released. This hormone then travels to the _______ arteriole, which _______ this blood vessel increasing the drip rate of the glomerular capillary by stimulating the release of angiotensin II. ADH, created by the _______ in the brain, is targeted to the following parts of the nephron: _______, _______, _______ to increase water absorption such that water can ultimately be moved to this blood vessel _______. T/F No naturally occurring hormone in the urinary system can reduce high blood pressure. Area in the nephron where microvilli are found: _______. Kidney stone: _______.

Explanation / Answer

12) Nephrons are the structural and functional units of kidneys. They help in excretion of metabolic end products from the body by means of glomerular filteration, tubular reabsorption and tubular secretion. Each nephron is made up of glomerulus, proximal convoluted tubules, loop of Henle, distal convoluted tubule and collecting duct.

a) water - proximal convoluted tubule

b) salts - loop of Henle and proximal convoluted tubule

c) metabolic wastes - distal convoluted tubule

d) hormones - distal convoluted tubule

e) drugs - distal convoluted tubule and collecting duct

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