The Brain
The part of the body that helps protect the brain
What is the skull?
The name of the colored ring around the pupil in your eye
What is the iris?
A quick action that your body does automatically
What is a reflex?
Which of the five senses would be used to determine if an object is hot or cold?
What is the sense of touch?
What is the brain?
The brain connects to this
What is the spinal cord?
Part of the eye becomes bigger and smaller depending on the amount of light it receives
What is the pupil?
A change in the environment
What is a stimulus?
How many sense organs does the human body have?
What is five?
The spinal cord is a large bundle of _____.
What are nerves?
The brain receives _______ from the spinal cord and nerves
What are messages?
The back of the eye that senses light and sends messages to the brain
The retina
A reaction that you do without even thinking about it is called an _____________________ reaction.
What is an automatic reaction?
The ______________________ in your hands send messages, or signals, to your brain when you touch something.
What are the nerves?
Someone who suffers a spinal cord injury may not be able to ______________________ afterwards.
What is walk?
What is three pounds?
How the pupil changes in the dark
What is get larger?
Messages travel through the nervous system very quickly using these.
What are electrical signals?
Seeing and tasting are examples of our ______________________ .
What are our senses?
The spine is made up of many small bones that protect the spinal cord. What is the name of these bones?
What are vertebrae?
When the human brain triples in size
What is the first year of life?
The clear layer in front of the eye that acts as a lens
What is the cornea?
The _____ ______ controls all your reactions.
What is the nervous system?
The nerves in our body send ______________________ to the brain.
What are messages?
What does the nervous system control?
What are all the activities in the human body?