Chapter 9 Flashcards
Where are nuclei located?
CNS
Neurofascicle
bundle of axons
Contains nerve tracts
Central
Afferent = _ to _
body to brain
Collections of nerve cell bodies
Ganglia
What does the perineurium cover?
Neurofascicle
Endoneurium
thin connective tissue that surrounds axons with myelin sheath
Composed of neurons and neuroglia
Central
What are the 2 anatomical regions of the nerve?
Neurofascicle and myelinated axons
Composed of nerves
Peripheral
Myelinated/unmyelinated axons
Axons covered with layer of neuroglia cells
Maintains physiological environment of axons
Endoneurium
1st to form in nervous system
Central
Efferent= _ to _
brain to body
Ganglia
accumulations of nerve cell bodies located in PNS
Which nervous system consists of the brain and spinal cord?
Central
What are the two major components of the nervous system?
Central and Peripheral System
Everything except brain and spinal cord
Peripheral
What 3 things does the neuron structural unit consist of?
cell body, nerve fiber, organelles
What is the function of the epineurium?
Healing
Afferent
Carries sensory info from body to brain
What do myelinated axons have that unmyelinated axons don’t?
Schwann cells
What three things does the Endoneurium help do?
Control level of electolytes, support nutrients, remove waste
Efferent
Transmits signals from brain to glands/muscles
