BLG 10A/B Lecture Notes - Lecture 25: Proximal Tubule, Distal Convoluted Tubule, Nephron
21 Apr 2020
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Document Summary
Kidneys, a major excretory organ, maintain the body"s internal environment by: Chapter 25 urinary system: regulating total water and electrolyte. Excreting metabolic wastes, toxins, drugs: producing erythropoietin (regulates rbc production) and renin (regulates blood pressure) and activating vitamin d. Kidneys are part of the urinary system, which also includes: ureters: transport urine from kidneys to urinary bladder, urinary bladder: temporary storage reservoir for urine, urethra: transports urine out of body. Internal kidney has three distinct regions: renal cortex: granular-appearing superficial region, renal medulla: deep to cortex, composed of cone-shaped medullary (renal) pyramids, renal pelvis. Funnel-shaped tube continuous with ureter: minor calyces. Cup-shaped areas that collect urine draining from pyramidal papillae: major calyces. Areas that collect urine from minor calyces: urine flow. Renal pyramid minor calyx major calyx renal pelvis ureter. Nephrons: nephrons are the structural and functional units that form urine. Tuft of capillaries composed of fenestrated endothelium: glomerular capsule.
