Division of NS, Parts of a neuron, types of neurons,glial cells
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25 Terms
The Central Nervous System is?
The brain and spinal cord
The Peripheral Nervous System?
sensory and motor neurons
What two divisions can the PNS be divided into?
Autonomic nervous system and somatic nervous system
The autonomic system controls?
Visceral organs
The somatic system controls?
Involuntary (reflexes) and voluntary muscle movements
Sympathetic is?
Fight, Flee, or freeze
parasympathetic is?
rest and digest
What part of the neuron is this?
dendrite
What part of the neuron is this?
cell body or soma
What part of the neuron is this?
Axon
sensory neurons flow which pathway in the spinal cord?
Afferent
Motor neurons flow which pathway in the spinal cord?
Efferent
interneurons connect…
sensory to motor
Interoceptors Receive…
internal sensory info for pain, deep pressure respiartory, and cardiovascualr.
Proprioceptors receive…
internal sensory info of skeletal muscles
Exteroceptors receive..
External sensory info of touch, temp, pressure, and special sensory
What glial cell is this and what does it do?
ependymal; this regulates CSF fluid and lines central canal
What glial cell is this and what does it do?
Astrocytes, makes the blood-brain barrier
What glial cell is this and what does it do?
Microglia; they eat pathogens and waste cells
What glial cell is this and what does it do?
Oligodendrocytes; they make myelin sheath to neurons (do NOT cover ALL neurons)
What glial cell is this and what does it do?
Satellite; regulate gases around neurons
What glial cell is this and what does it do?
Schwann cells; myelin sheath that covers ALL peripheral neurons (un-mylientated too)
Epinerium covers
The entire neuron
Perineurium covers
bundles of neurons
Endoneurium covers
individual axons