2. . Nutrients give our cells all the
energy they need .
. The digestive system , the
respiratory system , the circulatory
system and the excretory system
carry out the function of nutrition
4. The respiratory system is in charge of
breathing .
Breathing has two movements
First , we inhale air and it goes into
the lungs .
Then , we exhale air sending it out of
the lungs
6. The excretory system filters waste
substances from the blood . It removes
them from the body through excretion .
The exretory system is made up of .
Sweat glands in the skin
The urinary system . This is made up of the
kidneys and the urinary tract .
7. The circulatory system transport
nutrients and oxygen to our cells . It is
made up of the heart the blood and
blood vessels .
The blood collect oxygen and nutrients
and transport them to all the cells . It also
collect waste substances and takes them
to the sweat glands and the urinary
system .
8. Blood is a red liquid tissue made up of
cells that float in a liquid called plasma
There are three types of blood cells red
blood cells , white blood cells and
platelets .
Red blood cells carry oxygen .
White blood cells remove bacteria and
viruses from the blood .
Platelets are small fragments of cell that
form blood clots .
9. The heart uses rhythmic systole and
diastole movements to pump the
blood around the body .
Blood enters the atria through the
veins and passes to the ventricles .
Blood comes out of the ventricles
through the arteries and travels all
over the body