Sensory input- monitoring stimuli inside and outside the body
Integration- interpretation of sensory input
Motor output- response to stimuli by activation effector organs.
_____ are branched cells that wrap CNS nerve fibers.
Microglia
oligodendrocytes
astrocytes
oligodendrocytes
The _________ line the central cavities of the brain and spinal column of the CNS. Produce CSF and have cilia that help with the flow of CSF.
Microglia
astrocytes
ependymal cells
Ependymal cells
The _________ of the CNS are small, ovoid cells with spiny processes that function as Phagocytes that monitor the health of neurons.
Astrocytes
Schwann cells
microglia
microglia
_____ are the most abundant, versatile, and highly branched glial cells. The scaffolding of the CNS.
Satellite cells
astrocytes
microglia
astrocytes
____ cells of the CNS, anchor neurons to nutrient supplies, control chemical environment, and guide migration of young neurons.
microglia
astrocytes
schwann cells
astrocytes
_______ replaces damaged neurons with scar tissue or sclerosis. These cells are part of the CNS
astrocytosis
neurilemma
astrocytosis
What 2 cells are part of the PNS?
Schwann cells
astrocytes
microglia
satellite cells
ependymal
Schwann cells
Satellite cells
The _____ cells of the PNS surrounds nerve fibers, they make up the Myelin Sheath.
microglia
schwann
satellite
schwann
______ cells surround neuron cell bodies in ganglia in PNS.
Satellite
astrocyte
schwann
satellite
The 2 functions of the PNS (peripheral Nervous System) are ______ and _____ divisions.
sensory
Motor
Sensory is afferent/efferent?
afferent
Is Motor afferent/efferent?
efferent
____ pathway carries impulses from the peripherals to the brain.
afferent
_____ pathway transmits impulses from the CNS to effector organs.
efferent
What are the neurons that carry the signals through the CNS?
sensory
interneurons
motor
interneurons
The ____ and _____ ____ are the parts of the CNS.
brain
spinal cord
The parts of the CNS are paired ____ and _____ nerves.
spinal
cranial
_________ cells include astrocytes, oligodendrocytes, and schwann and others, provide support, insulate, promote health and growth and help guide young neurons.
neuroglia or glial cells
The neuron is composed of what 3 parts?
body (soma)
axon
dendrites
The _____ contains the nucleus and nucleolus.
body
axon
dendrites
body (soma)
Which is not a characteristic of neurons?
a. They are amitotic
b. They require a continuous supply of oxygen
c. They have a fast metabolic rate
d. They normally live for only a few days
d. They normally live for only a few days
The Soma does not have centrioles.
true/false
true
The ________ is the receptive, input region of the neuron.
dendrites
"nerve fiber" refers to the _____ of a neuron.
axon
The axon hillocks are cone-shaped areas from which axons arise.
true/false
true
The processes of the CNS are called _____ and the processes of the PNS are called _____.
nerves
tracts
tracts
nerves
_____ are short, tapering and diffusely branched processess, they are the receptive, or input regions of the neurons.
dendrites
Where are interneurons located and what are their function?
In the CNS, shuttle information between Sensory and Motor neurons.
Schwann cells make up the _____ _____.
Myelin sheath
The remaining nucleus and cytoplasm of a schwann cell is the ______.
myelin sheath
neurilemma
soma
neurilemma
______ of the neuron's membrane: Sodium is on the outside, and potassium is on the inside.
polarization
______ ______ gives the neuron a break.
resting potential
_____ _____ is when Sodium ions move inside the membrane.
action potential
_________ is when Potassium ions move outside, and sodium ions stay inside the membrane.
repolarization
_________ is when more potassium ions are on the outside than there are sodium ions on the inside.
