The Excretory System Urine for a Great Time!!!

Engage Watch the following video that shows thirty-seven -year old Dan Whitmore who has kidney failure. He has to spend three days a week attached to a dialysis machine. He’s on the waiting list for a kidney transplant.

Explore CONSTRUCT THE URINARY SYSTEM You will make a model of the primary components of their urinary system. Once finished with this activity you will be able to identify the structures, their functions and order the process of the urinary system through your model. Kidney Filtration Simulation Activity This lab activity that will simulate the overall function of the kidneys

Explain Contributing Excretory Organs Liver Lungs Skin Kidneys removes hazardous chemicals from the blood. "detoxifies" the blood For this reason, alcoholics and other types of addicts have a higher incidence of liver disease. Some proteins & other nitrogenous compounds are broken down in the liver forming a compound call urea Lungs excrete waste like carbon dioxide and water. Skin rids waste from the body through sweat glands Kidneys

Feedback System: Temperature Regulation How does the body keep from overheating? On the other hand, how does the body keep warm?

Primary Urinary Organs 2 Kidneys Renal cortex (outer region) Renal medulla (inner region) Nephron: functional unit of kidney Renal artery/vein: kidney blood flow 2- Ureters: urine excretory duct 1 - Urinary bladder: urine storage 1 - Urethra: urine elimination tube

Kidneys Two reddish organs just above the waist behind the stomach Filter the blood and removes waste

Ureter Connects the kidneys to the urinary bladder

Urinary Bladder Smooth muscle bag Stores waste solution - urine

Urethra Connects bladder to outside of the body Allows urine to pass out of the body

Nephron Filtering unit of the kidney Blood enters full of waste and leaves filtered Blood enters under high pressure and flows into the capillary beds

U-shaped Tubules (Loop of Henle) Most of the ions and water All of the glucose and amino acids Reabsorbed into the bloodstream This is how the body’s water is conserved Homeostasis is maintained