HSCI 100 Lecture Notes - Urinary Bladder, Renal Medulla, Renal Cortex

• School: Simon Fraser University
• Department: Health Sciences
• Course: HSCI 100
• Professor: Nienkevan Houten

Document Summary

Main functions: excretion of metabolic wastes, maintenance of water-salt balance, maintenance of acid-base balance, hormone secretion. Kidneys and homeostasis: reddish brown colour and shaped like kidney beans, covered and supported by several layers of connective tissues. > outermost layer is tough, fibrous layers that anchors each kidney and its adrenal gland to the abdominal wall and surrounding tissues. > beneath that is a protective cushion of fat. > innermost layer covering the kidney is a layer of collagen fibre that protects the kidney from trauma. Nephrons filters of the kidney: microscopic functional units of the kidney responsible for the formation of urine. > where fluid is filtered from the blood. A knot of the capillaries inside the glomerular capsule where pores produce a blood filtrate- special cells, podocytes, connects capsule epithelium to capillary endothelium. Blood enters a glomerulus by an incoming arteriole and leaves from an outgoing arteriole: renal tubular.