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Urinary System.

How many kidneys are there? 2
How many ureters are there? 2
What are the 4 functions of the urinary system? 1) removes waste 2) regulates body chemicals 3) secretes hormones 4) maintains a balanced PH level.
What are the most important excretory organs in the body? The kidneys
What do the kidneys do? filter out wastes to be excreted in the urine, regulate blood pressure, regulate acid base balance, stimulate red blood cell production
What happens when the kidney fails and your body retains the fluids? blood pressure rises, Harmful wastes build up in your body, your body doesnt make enough red blood cells, you develop fatigue, nausea, and loss of appetite
What does the kidney resemble? A bean
What happens during the 2nd step of urine formation, tubular reabsorption? water,suger, and salt are returned to the blood stream
what happens during the 3rd step of urine formation, tubular secretion? substance move out of the blood and into the renal tebules
What is the 1st step of urine formation? glomerular flitration
Outermost layer of the kidney? cortex
Middle layer of the kidney? medulla
What does the medulla divide into? renal pyramids
There are millions of nephrons in which layer of the kidney? cortex
What is the functional unit of the kidney? The nephron
What does the nephron do? Forms urine
What is the bowmans capsule? Cup shaped structure surrounding the glomerulus
What is the glomerulus? Ball shaped coil of capillaries
What do the Ureters do? Take urine by wavelike contractions to the bladder
What is the bladder? A hollow, triangle shaped muscular sac that serves as the resevoir for urine.
How much urine can the bladder hold? Up to 1 quart
What is the urethra The tube that leads from the bladder to the outside of the body
How long is the urethra in women? 1-2 inches
How long is the urethra in men? 7-8 inches
What is the average amount of urine excreted in one day? 2 quarts
What is the urine composed of? 95% water and 5% waste
Created by: SMourad1