6
Which organs make up the nervous system?
Our bodies and health
The
brain
is the most important organ in the nervous system. It controls
all the other organs in our body. The
nervous system
connects the brain
to the organs, muscles and skin through nerves, which are connected to
the
spinal cord
.
1
Describe the reaction of the boy in these pictures. Why do you think this happens?
a)
b)
In picture … the boy is … He can feel…
In picture … he moves … because … I think he does this because…
G
E T T I N G S T A R T E D
The spinal cord
The spinal cord connects the brain to the rest
of the body. This cord is made up of nerve
tissue, forming a long, thick tube.
Nerves
Nerves connect the spinal cord to
our muscles, joints and skin.
Sensory
nerves
receive messages from the
muscles, joints and skin and send them
to the brain.
Motor nerves
transmit
messages our brain sends to the
muscles, joints and skin. This results
in movement, or a physical reaction,
such as sweating. Messages travel
along the nerves very quickly.
The brain
When our brain
receives information,
it sends a message to
a part of the body
to tell it how to react.
If our hand touches
a hot object, nerves
in our skin tell our
brain. Then the brain
tells the muscles in
our hand to move.
