Without the nervous system you couldn't?

The nervous system is made up of these three parts?

What does the brain send out into the body to help it move?

These muscles move on their own withouth you thinking about them.

All are examples of involuntary muscles except?

This category of muscle receives neurons from the brain to signal movement.

We have more than ___ Muscles.

These are the busiest muscles in the human body?

Muscles work in pairs as Flexors and Extensors.

Select the option that would be helping your muscles the least.

What does our skeletal system do for us?

This keeps our bones from scratching against each other.

The human body has how many bones when it is fully developed?

This is one of the important minerals found in bones.

What is another name for the breast bone?

How many pairs of ribs do most people have?

This is the longest bone in the body.

select an example of the skeletal system helping your circulatory and your respiratory system?

There are 33 of these connected to your spine