Digestive System
What does this system break down into nutrients and other substances that the body can use?
This system has an army of defense that can....
destroy germs or prevent them from entering the body
This is the first stage of development
the baby is born
What is this system responisble for?
Getting rid of waste
What part of the digestive system is responsible for chemically breaking down some food.
Saliva
These trap germs you may breathe in through the nose and windpipe.
hairs and mucus
This is the second stage of development
the baby is an infant and goes through early childhood
Which organ is a tube that carries urine to the bladder?
ureters
wasted materials are removed
capillaries bring nurtrients into the blood
villi absorbs digested food
small intenstine
This kills germs that enter through the mouth.
saliva
This is the third stage of development
middle childhood
This the organ where waste is filtered and removed from the blood and mixes with water to create urine.
Kidneys
Cells use nutrients for _________, __________, and __________
energy, growth, and repair
This is the rising of your body temperature that kills invading germs when you're ill.
a fever
adolescence
This store urine
bladder
This part produces a chemical that adjusts sugar levels in your body.
pancreas
Some bacteria cause diseases that prevent the human body from staying healthy. Bacteria in the digestive tract, however, are helpful to humans in different ways.
How do bacteria help humans get energy?
by helping humans digest food
Which stage are you in if you are 3 to 8 years old?
Early childhood
What is the order of the excretory system?
1. kidneys
2. ureters
3. bladder