Nervous System Carries messages to and from the brain and spinal cord and all other parts of the body.

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Presentation transcript:

Nervous System Carries 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 of Nerve Tissue

3 Parts of the Brain are: 1. Cerebrum 2. Cerebellum 3. Brain Stem

The Cerebrum Controls: Ability to Memorize, Think, & Learn

The Cerebellum Controls: Coordination of muscle activity.

The Brain Stem Includes the Medulla - and controls Involuntary Actions

The Spinal Cord Is 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 Nerves control Senses & Motor Activity

Spinal Nerves TRANSMIT information To & From All Parts of the Body

Neurons Are NERVE Cells. There are 2 types of Neurons: Sensory & Motor Neurons

Sensory Neurons: Carry messages FROM sense organs TO the brain.

Motor Neurons: Carries message FROM THE BRAIN TO MUSCLES & GLANDS

Controls ability to memorize, think, learn Controls coordination of Muscle activity Contains the medulla which controls involuntary actions such as heart rate and breathing