BIOL 2312 Chapter Notes - Chapter 50: Posterior Pituitary, Aldosterone, Angiotensin
14 Sep 2017
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Chapter 50: osmotic regulation and the urinary system pt2. Fist size, lower back, blood from renal artery where it is made into urine. Ureter flares to make a funnel that form the renal pelvis---> forms renal tissue---> forms renal cortex--> renal medulla. Reabsorption: selective movement of glucose, amino acids, and a variety of inorganic ions, out of the filtrate in the tubule system to the extracellular fluid, then back into the bloodstream via peritubular capillaries. Secretion: substances from blood to extracellular fluid then to filtrate in tubes (expelled as waste) The nephron is the filtering unit of the kidney. Each kidney has 1 million nephrons juxtamedullary nephrons- long loops in the medulla cortical nephrons- shorter loops. Blood carried by afferent arteriole----> glomerulus (capillary ball in renal cortex)--> blood is filtered (blood cells and proteins are too large) ---> bowman"s capsule---> proximal convoluted tubule (in cortex)---> loop of.
