Nervous System Flashcards
neuron
specialized nervous tissue with the purpose of transmitting electrical signals
central nervous sytem
brain which is housed in the cranium and the spine which is housed in the vertebral column
peripheral nervous system
nerves that connect to the rest of the body
nerves
an organ composed of bundles of axons, connective tissue layers, and blood vessels
somatic sensory
consciously perceive stimuli
visceral sensory
detects stimuli that we don’t usually consciously perceive
epineurium
outermost supporting connective tissue layer of peripheral nerves
perineurium
fibrous sheath enveloping each of the fascicles within nerves
endoneurium
areolar connective tissue that surrounds each axon of a peripheral nerve
cranial nerves
extend from the brain itself
spinal nerves
extend from the spine
sensory nerves
takes information to the CNS
motor nerves
receives information from the CNS
ganglion
cluster of neuron cell bodies within the PNS
nervous tissue
primary tissue of the nervous system, consists of either neurons or glial cells
soma
neuron cell body
perikaryon
cytoplasm within the neuron cell body