EXCRETORY SYSTEM

LIFE FUNCTION Excretion- the process by which metabolic wastes are removed from an organism

WATER, CARBON DIOXIDE, UREA, MINERAL SALTS CO METABOLIC WASTES 2 WATER, CARBON DIOXIDE, UREA, MINERAL SALTS

Organs of excretion are the . . . lungs, liver, skin & kidneys.

rid the body of carbon dioxide and water (water vapor) LUNGS rid the body of carbon dioxide and water (water vapor)

LIVER removes harmful substances such as bacteria, certain drugs and hormones from the blood

liver purifies or detoxifies the blood bile considered an excretory product breaks down excess amino acids  formation of urea

contains sweat glands through which sweat is released SKIN contains sweat glands through which sweat is released water, salt, urea (small amount) excreted as perspiration (98% water, 2% salt, urea)

SWEAT A Visual Breakdown!!!

Another major role of the skin is the removal of excess heat. evaporation of sweat removes heat and cools the body

PORE SWEAT GLAND

2. control of concentration of most of the body fluids KIDNEYS 1. Remove the waste of cellular metabolism from the blood 2. control of concentration of most of the body fluids

WHAT ARE THE FOUR METABOLIC WASTES? A QUICK REVIEW WHAT ARE THE FOUR METABOLIC WASTES?

Welcome to the Path of Pee Urinary System Welcome to the Path of Pee THE SYSTEM WITHIN A SYSTEM

made up of kidneys, ureters, bladder, urethra URINARY SYSTEM made up of kidneys, ureters, bladder, urethra produces and removes urine from the body

CENSORED

2. control of concentration of most of the body fluids KIDNEYS 1. Remove the waste of cellular metabolism from the blood 2. control of concentration of most of the body fluids

Cortex Medulla Pelvis

Functional unit of the kidney is the nephron. The nephron is a microscopic filter

URETER tube through which urine passes from each kidney to the urinary bladder

where urine is stored until excretion URINARY BLADDER where urine is stored until excretion

CAUTION: CAT BLADDER IF you are squeamish or have just eaten a school lunch; please look away 1 2 3 4 5

URETHRA the tube that carries urine from the bladder to the outside of the body

CENSORED

Some Common Problems

Caused by alcohol abuse Cirrhosis of the liver BAD GOOD Caused by alcohol abuse

KIDNEY STONES - stones form that block the ureter

Jaundice - bilirubin builds up in the blood causing the skin to color yellow. If not treated it could cause poisoning in the blood. NOT MY KID

NOT MY HAND Gout - Uric acid builds up in the joints causing painful arthritic like symptoms.

THIS IS WHERE IT ENDS

It's True! Ever eat kidney beans? They were named after your kidneys which are a similar shape and color!

It's True! Your kidneys have about a million structures that filter out liquids and wastes.

It's True! About 440 gallons of blood flow through the kidneys each and every day!