Skeleton
What is the purpose of your skeleton?
To support and protect your body and help your body move.
What must enter your eyes for you to see an object?
Light
Which part of the eye controls how much light enters the eye?
The iris
What organ controls and coordinates many of the body's activities?
The brain.
What connects muscles to bones?
Tendons.
What part of your eye acts as the lens?
The cornea
What is the opening in the center of the iris called?
The pupil
What body system carries information between your brain and the rest of your body?
The nervous system.
Why does your arm move when a muscle contracts?
The muscle pulls on the bone, causing the bone to move.
What part of your eye acts as a screen?
Retina
What happens to your pupil when you go from a dark room into very bright sunlight?
The pupil gets smaller to allow less light into the eye.
You accidentally touch something hot and quickly pull your hand away. Why can this happen so quickly?
Nerves quickly send information about the heat, allowing the nervous system to produce a rapid response.