The Excretory System Urine for a Great Time!!! Explain Contributing Excretory Organs Liver • • 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 “Homeostasis”: Regulation of the body What factors in the body can you think of that might change? - pH Levels of various solutes and wastes Water level - How would the body keep itself safe from these changes? Engage Watch the following video that shows twenty-three years old Iyanti Browne who has kidney failure. She has to spend three days a week attached to a dialysis machine for three hours at a time. 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 In the next episode… 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 Have a go yourself Join the Quizlet group https://quizlet.com/join/WG8EN8KZz