Human Body Quiz

______ are the “building blocks” and also the smallest part of the body.

A group of cells working together are called ______.

The organs that work with parts of your body that help in a certain way are called ______.

​ (a)   keep dust and other objects out of your eyes.

The ​ (a)   is the body system that has the brain, the nerves, and the spinal cord in it.

The​ (a)   controls your entire body.

The ​ (a)   nerve carries a message of sight to your brain.

The ​ (a)   is the colored ring of muscles that control the size of the pupil.

The bundle of nerves protected by your backbone is called the ______.

The cells that carry messages to and from the brain are called _______.