BSC 109 Lecture Notes - Lecture 15: Hemodialysis, Arteriole, Capillary

• School: University of Alabama
• Department: Biological Sciences
• Course: BSC 109
• Professor: Audrey Hicks

Document Summary

Urinary system contributes to homeostasis: excretion: processes that remove wastes and excess materials from the body, digestive system: excretes food residues and wastes produced by the liver, respiratory system (lungs): excretes carbon dioxide, integumentary system (skin): excretes water, salt, urinary system (kidneys): excretes nitrogenous wastes, excess solutes, and water. The kidneys regulate water levels: to maintain homeostasis, water intake = water output, kidneys adjust water output as necessary, water input: food, drink, metabolism, water output: lungs, skin, feces, kidneys modify output based on intake and loss. Organs of the urinary system: kidneys, principal organ of urinary system, cortex: outer portion of the kidney, medulla: inner region of the kidney, renal pelvis: hollow space in center of kidney where urine collects, ureters, muscular tube that transports urine from kidneys to bladder, urinary bladder, three layers of smooth muscle, lined with epithelial cells, stores urine (600 1,000 ml, urethra, carries urine from bladder to outside of body, two sphincters control urination.