Ch3

Neurons/glial cell

nerve cells specialized for communitcation

Support cells: Provide support and utrients for neurons; from myelin; form blood brain barrier

prevents harmful substances from entering the brain

central region of the cell

receive outside signal

delivers signal to other cells

glial cells that help speed signal transmission

end of axon where signal is released

all or none electrical impulse that neurons use to communicate

junction netween two communicating neurons

chemical signal

space between two meurons where neurotransmitter is released

Recovery time when another AP is not possible

sensory neuron , interneurons, motor neurons

hoe the brain communicates with the body. composed of peripheral nervous system and central nervous system

nerves that connect muscles, organs, and glands to the central nervous system. Somatic NS and Autonomic NS

Brain and Spinal cord

carries signal between the CNS and muscles in the body that control movement

carries signals between the CNS and organsthat regulate involuntary actions and the body's internal state. Sympathetic NS and Parasympathtic NS

Readies the body for action (fight /flight response)

active during rest. slows heart rate and responsible for digestion and rest.