Parts:
Brain
Spinal cord
Nerve fiber
Sensory receptors
1st part of the system:• Autonomic nervous
system:• Controls the
automatic functions
Respiratory system
Digestive system
Eyes
Heart
Blood vessels
Glands
2nd part of the system:
Central Nervous SystemControls
• Movement
• Communication
Has 2 parts:
1.Spinal cord and brain
1.Peripheral nerves
Nerves:
• Bands of white tissue
• From central nervous system and ganglia and extend to all parts of the body
2 kinds of nerves:
1. Send impulses to the brain over sensory fibers -
2. Carry commands back from the brain over motor fibers
Nerves follow the course of the arteries
Exp: telephone wires – contain many separate lines in a bundle
3 main parts of the brain:
1. Brain stem
2. Cerebrum
3. Cerebellum
Brain Stem (primitive brain)
• Contains nerve centers that control heartbeat, respiration, temperature, etc…