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Nervous System Study Guide
The brain, spinal cord, and the nerves make up the Nervous system.
We have 3 parts to our brain. They are the 1. medulla/brain stem
2.cerebrum
3.cerebellum
The individual nerve cell is called a neuron.
Impulses going to a nerve cell travel along feelers called dendrites.
Impulses leaving a nerve cell travel along feelers called axons.
Involuntary responses are performed without our brain becoming involved.
Voluntary responses are performed when you want to do something (like throw a ball,
ride a bike.)
When you react to something without thinking, your action is called a reflex.
The part of the brain that controls involuntary actions, such as the beating of
your heart, breathing, and digestion is called the medulla.
The cerebellum controls balance and coordination and makes sure your muscles work
in the right order.
Nerves are long threads of specialized cells.
Jumping across the space between two neurons is called a synapse.
The spinal cord is the largest grouping of nerves leading from the brain and extending
down the back.
Motor nerves go from the brain to muscles.
Know which part of the brain would control different actions:
Cerebrum –
thinking part of the brain, controls voluntary functions
Cerebellum –
controls coordination and balance
Medulla
controls involuntary functions