Nervous System.

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Presentation transcript:

Nervous System

Functions gathers & interprets information responds to the information

Two Parts Central Nervous System (CNS) Peripheral Nervous System (PNS)

Organs of CNS brain spinal cord

Organs of PNS all other parts of nervous system nerves

The Peripheral Nervous System What is a nerve? collection of axons bundled together with blood vessels and connective tissue

Parts of the PNS Somatic Nervous System Autonomic Nervous System Read page 229

The Central Nervous System BRAIN control center for the body each region associated w/ specific functions

CEREBRUM divided into right and left hemispheres conscious functionings interpreting stimuli from senses

CEREBRUM sensory detection motor control of skeletal muscles

CEREBELLUM second largest portion fine motor coordination body movement posture balance

BRAIN STEM parts: medulla oblongata pons midbrain

BRAIN STEM controls: heart rate constriction of blood vessels digestion respiration

SPINAL CORD bundle of interneurons surrounded by the vertebral column cranium to hip area

SPINAL CORD provides connection b/w the brain and the extremities & region of the body associated with reflex actions

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