E3: Ch 14 Flashcards
Structures involved in the CNS
brain, spinal cord
Structures in the PNS
cranial nerves, spinal nerves, ganglia
3 general functions of the CNS (CPR)
collect, process, and respond to information
2 parts of the afferent nervous system
somatic, visceral
motor nervous system has an affect or effect
effect
somatic motor is voluntary or involuntary?
voluntary
somatic motor contracts __ muscle
skeletal
autonomic motor is
involuntary
autonomic motor regulates
smooth muscle, cardiac muscle, and glands
2 types of nervous cells
neurons, glial cells
neurons are the
piolets
glial cells are the
helpers
basic structural unit of the nervous system
neuron
what type of neural cell is nonmitotic
neurons
what type of neural cell can become cancerous
glial
__ sends signals away
axons
__ sends signals into the neural body
dendrites
region where axon connects to the neural cell body is called
axon hillock
structure of axon that is only present in the ANS
varicosities
unipolar neuron are
single, short process that branch like a T
Biolar neuron have
2 processes, one dendrite and one axon
multipolar have
many dendrites, single axon
what is the most common type of neuron? uni, bi, multi?
multipolar
sensory neurons are afferent or efferent?
afferent
motor neurons are efferent or afferent?
efferent
interneurons facilitate communication between __ and __ neurons
sensory, motor
glial cells are found in __ and __
CNS, PNS
glial cells physically protect and __ neurons
nourish
4 types of cells found in CNS
Astrocyte, ependymal, microglial, oligodendrocyte
2 types of glial cells in the PNS
satellite cells, neurolemmocytes
neurolemmocytes are also known as
schwan cells
satellite cells help control the __ environment around __ cells
control, nerve
type of glial cell that is associated with PNS axons only
Neurolemmocytes
neurolemmocytes produce ___ which is an insulator of electrical activity
myelin
what two cell types have the same structure and function
neurolemmocytes and oligodendrocytes
