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The nervous system consist of the brain, spinal 

cords and sensory organs(Nerves).

The main function;

the central nervous

system is the

primary control

for the body and is

composed of the 

brain and spinal 

cord.

There is a nerve disease called Epilepsy and it is a 

abnormal electrical discharge from the brain cells 

that causes seizures. Parkinson's disease is a 

progressive nerve disease that affects movement. 

To help keep your nervous system healthy, you need 

to not smoke,take care of health conditions that may 

cause decreased nervous system functioning.

Did you know: There are more nerves in the brain 

then there are stars in the milky way.

Made up of organs that help you breathe. consist 

of lungs, trachea, bronchi, diaphragm.

The main function is to

supply blood with oxygen, 

so that the blood can

deliver the oxygen 

through the whole 

body.

Did you know: That the common cold can be 

caused by hundreds of different viruses.

Some people can hold there breath for more 

than 20 minutes.

If you don't smoke, you can avoid getting 

lung cancer and it will help keep your 

respiratory system healthy.

Its to defend you against millions of bacteria, 

viruses, microorganisms,

toxins and parasites.

When something dies, 

its immune system 

(along with everything 

else) shuts down. 

In hours, the body is 

invaded by all sorts of 

bacteria, microbes, 

and parasites.

Did you know: In your blood, there are 

around 50 billion white cells whose only 

interest is to keep your body's natural 

defenses in good condition, so don't worry if 

you lose 5 billion when you give blood - you 

still have a few left.

To keep your immune system healthy you 

need to eat fruit and vegetables, and whole 

grains.

Consist of heart, blood, and vessels(veins).

It transport nutrients,

water, oxygen

through your 

entire body.

It carries away

waste like 

carbon dioxide

that body cells

produce.

Did you know: The heart beats about 3 

billion times in the averages persons life.

Within a tiny droplet of blood, there are 

some 5 million red blood cells.

It takes about 20 seconds for a red blood 

cell to circle the whole body.

Consist of hair, skin, and nails.

It acts as a barrier

to protect the body

from the outside 

world. It also

retains body fluid,

and protects against 

diseases.

Did you know: Every

month you have a 

whole new skin layer.

Consist of mouth, throat, esophagus.

Turns food you eat

into nutrients, which

the body uses for

energy.

Did you know: It takes 

approximately seven 

seconds for 

food to travel 

through the esophagus 

and reach the stomach.

It makes it easier for humans to reproduce 

and survive as a species. It can be asexual or 

sexual.

Did you know:Human testes 

can produce 10 million 

sperm cells daily. 

This is enough to 

repopulate the entire 

earth in only 6 months!! 

Tendons, ligaments, cartilage.

It provides support for your body.

Without your skeleton your

body would collapse. It

lets you be able to move.

Did you know:At birth the 

human skeleton is made

 up of around 300 bones. 

By adulthood, some bones 

have fused together to 

end up with 206 bones.

Blood vessels, tendons,skeletal muscle tissue, and 

nerves. This is Responsible for the movement of your 

body. Attached to the bones of the skeletal 

system.

Did you know:To take one 

step, you use 200 

muscles. Your tongue is the 

strongest muscle in 

your body.

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