Human Body Systems Review

a thin sheet or layer that covers something

a powerful, invisible ray of light that can pass through objects to show the inside

able to see things clearly if they are far away; Things that are closer look blurry

a path along which nerves send messages to thebrain

What are the three parts of your ear?

the set of bones in your skull

shin bone

able to see things clearly if they are close by; Things that are farther away look blurry.

a doctor who specializes in caring for eyes and treating vision problems

A tissue connecting muscle to bones

The _______ is a fluid-filled coil, shaped like a snail’s shell . It is lined with hairs, which are connected to nerves.

your breastbone

The lens of your eye bends the light rays closer together to focus the light on the ________.

a connection between two bones in your body, for example, an elbow or your knee

a group or layer of cells that work together as a part or organ in your body

a flexible tissue that cushions the joints where your bones meet

the tiniest living part of the human body

on purpose, choosing to do an action

What three things can correct vision problems?

a person who makes glasses, lenses, and sells contact lenses

the largest part of the brain, divided into two halves; controls thoughts, emotions, and all the senses

shoulder blades

What part of the eye sends information to the brain?

a thin membrane inside the ear that vibrates when sound hits it

The right _______ controls movement on the left side of the body. The left ______ controls the right side.

a tissue that makes it possible for your body to move

Automatic, not by choice

What are the names of the two parts of the eye that you can easily see?