Nervous SystemNervous SystemCarries messages to and from the brain and spinal cord and all other parts of the body.
The Nervous System Consists
of the:Brain, Spinal Cord
& Branching Nerves
The Nervous System is divided into two systems:
Central Nervous System
& Peripheral Nervous
System
The Central Nervous System
The Central Nervous System consists of
the:Brain
& Spinal Cord
The Brain is a mass ofNerve Tissue
3 Parts of the Brain are:
1. Cerebrum2. Cerebellum3. Brain Stem
The Cerebrum Controls:
Ability to Memorize, Think,
&Learn
The Cerebellum Controls:
Coordination of muscle activity.
The Brain StemIncludes the
Medulla -and controls Involuntary
Actions
The Spinal CordThe Spinal CordIs a thick band of nerve cells that extends through the backbone.
There are 31 pair of spinal nerves branching from it.
The Peripheral Nervous System
The Peripheral Nervous system
consists of Cranial Nerves
& Spinal Nerves
There are: 12 Pair of CRANIAL NERVES
There are: 31 Pair of
SPINAL NERVES
Cranial NervescontrolSenses
&Motor Activity
Spinal Nerves TRANSMIT
informationTo & From All
Parts of the Body
Neurons Are NERVE Cells. There are 2 types of Neurons:
Sensory&
Motor Neurons
Sensory Neurons:Sensory Neurons:Carry messages FROM sense organs
TO the brain.
Motor Neurons:Motor Neurons:Carries message FROM THE BRAINTO MUSCLES & GLANDS
Controls ability to memorize, think, learn
Controls coordination ofMuscle activity
Contains the medulla whichcontrols involuntary actionssuch as heart rate andbreathing