"Excretory
System" "How Cells
Produce And Get Rid Of Cell Wastes"
The
excretory
system is the group of organs that get
rid of cell wastes. Your skin and lungs also help. Body cells
always produce cell wastes. Carbon dioxide and water are made when
body cells break down sugar to give out energy. Plasmacarries
cell wastes to body organs that get rid of the wastes. Some wastes
are discarded in sweat from the skin.
"Removing Wastes
From The Blood"
Kidneysare
the most important organs in this system. Kidneys are about the size
of your fist. Blood with cell wastes goes into your kidneys through
arteries. On the inside of your kidneys the blood flows through small
blood vessels until it reaches the capillaries. Wastes from blood
goes through thin walls in a capillary into very little tubes. The
tubes take away some salts, nitrogen wastes, and extra water from the blood.
Your kidneys clean all of your blood forty times a day. The
wastes form a liquid called urine.
Urine is very important also.
Urine goes into tubes in your kidneys, to be exact two tubes. These
( two ) tubes into your Urinary
bladder.
The urinary bladder is a baglike organ that stores your urine temporarily.
