1.The job of the excretory system is to ___Remove waste from
the body_____________________________.
2.Some of the materials considered to be waste products
are__Excess water, salts, CO2, Urea________________.
3. The organs that make up the excretory system are __Kidney,
Lungs, Liver, Skin______________.
4. The main function of perspiration is _regulate body
temperature (also gets rid of waste products)_____________
_____________________________________________.
The KIDNEYS are the main organ of the EXCRETORY SYSTEM
NUMBER: ___2________________________________________________
LOCATION: __Just above your waist on each side of your spine. __
Function: _Filter your blood to reove waste. _______________
Kidneys are divided into:
Outer section:____contains millions of tiny filter units called
nephrons____________________________________.
INNER SECTION:___Funnel shaped cavity that leads to the
ureter._________________________________.
substances filtered:__Urea, nutrients, water, Salt, Poisons And toxins___
UREA :__Composed of uric acid, it is a chemical waste product, it is a
nitrogen waste. _______________________________________________________.
Substances reabsorbed :__nutrients, water, and some
salt______________________________________________________.
What’s Left? __Urine__________________________________________.
MATERIALS THAT MAKE IT UP:__(4%) Urea, salt and (96% )water_______
Kidney
nutrients,
water, and
some
Ureter
salt
Urinary Bladder
Urethra
bladder - a hollow organ that stores urine until it is excreted.
kidney - two bean-shaped organs that take waste from the blood and produce urine.
ureter - two tubes, each of which carries urine from a kidney to the bladder.
urethra - the tube that carries urine from the bladder out of the body.
URETERS
There are ____2_____ ureters in the human body, one from each ___Kidney___. There job is to
____transport____ urine to the bladder.
BLADDER
The bladder is a __involuntary__ muscle. It’s job is to____store___ the urine until it leave the
body.
URETHRA
A tube that leads___out of__ the body from the __Urinary bladder_____.
THE EXCRETORY SYSTEM
Diseases
GOUT: ___Disease caused by a buildup of uric acid in the blood._Desposits
uric acid in joints which causes pain and stiffness._______
CIRRHOSIS: _is scarring of the liver and poor liver function as a result of
chronic liver dsease______________________________________________
KIDNEY STONES: ___Kidney stones can form when urine contains too much
of certain substances. These substances can create small crystals that become
stones._ The biggest risk factor for kidney stones is dehydration.
URINARY TRACT INFECTION (UTI):__ Urinary tract infections are caused
by germs, usually bacteria that enter the urethra and then the bladder. This can
lead to infection, most commonly in the bladder itself, which can spread to the
kidneys._________________________________________________________________
______________________________________________________________________________
OTHER EXCRETORY Organs:
THE LIVER
• Filters your _blood__________.
• Removes certain ___toxins______ and poisons (like alcohol) from your
__blood_________.
• Breaks down _protiens___ into smaller___amino acids______.
• Removes and __digests___ most of the bacteria that enters the blood
from the large Intestine.
OTHER EXCRETORY ORGANS CONTINUED:
THE SKIN
• The ___largest______ organ of the body.
• There are _______2___________ layers of the skin. The __ epidermis __
and the _ dermis ___.
• The ___epidermis______ is the outer most layer.
• The ____dermis___________ is the inner layer .
• The skin contains ___glands_____, _____nerves____, and
___hairs____.
• The waste secreted are __water___, _____salt____ and ____urea___.
• Perspiration(Sweat) ____lowers_______ body temperature.