Nervous System Nervous System How did our nervous

Nervous System

Nervous System • How did our nervous system work in the Impulse Activity we just completed? – We sensed the touch. – A message was sent to our brain. – Our brain sent a message to our muscles. – Our muscles squeezed the hand.

Organs of the Nervous System Brain= uses information it receives from nerve impulses to coordinate actions

Organs of the Nervous System Nerves= carry messages throughout the body

Organs of the Nervous System Spinal Cord= Central communication system. – Nerve center – Messages are sent to the brain through the spinal cord. – Exception: Reflexes skip the spinal cord and go straight to the brain.

Functions of the Nervous System Functions include: – Control center – Communication network – Coordinates all actions and reactions – Send messages as electrical impulses

Functions of the Nervous System Functions include: – Allows us to • Think • Evaluate • Remember

Functions of the Nervous System Functions include: 1. Sensory Input- Senses 2. 3. send messages to the brain. Integration- The brain interprets and translates. Motor Output- The brain sends messages to body.

Functions of the Nervous System Functions include: – Central Nervous System- Maintains homeostasis by regulating vital body functions such as breathing, heart rate, hormones, etc.

Functions of the Nervous System Functions include: – Peripheral Nervous System- • Sensory Neurons- Carry • information toward the central nervous system Motor Neurons- Send impulses away from the central nervous system