NURS 2090 Lecture Notes - Body Fluid, Polycystic Kidney Disease, Detrusor Urinae Muscle
16 Apr 2013
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Document Summary
Urinary elimination: urine production, process: excreted via a complex interplay btw neural, motor and hormones, elimination: needs to be patent! Urine production: nephron: role is to filter water soluble substances in blood, reabsorb nutrients, secrete waste. Renal blood flow makes up 20-25% cardiac output (1000 ml blood/minute) Enters the bowman"s capsule through the tubule system. Transport via countercurrent mechanism (vasa recta is a capillary that moves in the opposite direction of the filtrate in the tubule). *secreted actively in proximal, distal convoluted and collecting tublues. Completely reabsorbed by active mechanisms unless tubular maximum is exceeded. Ascending thick loh and early distal convoluted tubule. Proximal distal tubule by aas glomerules glomerules glomerules glomerules (limited) Transport of urine: ureters are composed of smooth muscle fibers that propel urine to. Early and late proximal tubule bladder via peristalsis. (urine enters bladder via the trigone, which serves as a sphincter to prevent urine from moveing back into the ureter from bladder)
