BIOL 3500 Chapter Notes - Chapter 12: Distal Convoluted Tubule, Proximal Tubule, Renal Papilla

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Urinary system osmoregulation and excretion filters blood --> end product = urine regulation of water, electrolyte and acid-base homeostasis. Excretion of toxic metabolic waste products (nitrogenous molecules : urea) hormonal and metabolic functions. Renin: component of renin-angiotensin-aldosterone (ras) mechanism. Erythropoietin: stimulates production of erythrocytes in bone marrow. Vitamin d: regulates calcium balance, converted to an active form in the kidney. Urethra: urine is produced in kidneys. Kidney h [amp ] e ; c cortex cp capsule h hilum m medulla p papilla u ureter(cid:1), wheater functional histology. Each kidney contains million functional units called nephrons: renal corpuscle, proximal convoluted tubule, thin and thick limbs of nephron loop (loop of henle, distal convoluted tubule, collecting tubule. Blood supply to the kidney renal artery: divides in interlobar arteries. Between the pyramids branch to form arcuate arteries branch into cortical radial (interlobular) arteries. Blood supply to the kidney interlobular arteries afferent arterioles. Visceral layer (inner wall) : podocytes around capillaries.

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