pps neuro Flashcards
In the cross section of a spinal cord what are the # of grey matter and # of white matter, and what are they?
grey matter (3)
anterior horn
posterior horn
gray commsiure
white matter (9) anterior funiculus posterior funiculus lateral funiculus anterior commisure anterior median fissure posterior median sulcus central canal anterior root posterior root dorsal root ganglion
dorsal root vs dorsal root ganglion vs sensory body
dorsal root
outer casing
dorsal root ganglion
is the bump caused by the sensory body
sensory body
is the signal (lollipop shape) that passes through the dorsal root ganglion not the dorsal root
dorsal root ganglion contains the ___ ___ of ___ neurons
cell bodies
sensory
The sensory body passes through?
dorsal root ganglion
posterior horn vs anterior horn
posterior horn
contains neuron cell bodies that synapse with afferent neurons
anterior horn
contains neuron cell bodies that send efferent axons
lateral horns are ?
autonomic neuron cell bodies
dorsal root aka
sensory root of a spinal nerve
columns of white matter?
3
dorsal
ventral
lateral
__ houses cell bodies of somatic motor neurons.
____ serves as a communication route between left and right sides.
_____ houses axons of sensory neurons and cell bodies of interneurons
_____ houses cell bodies of autonomic motor neurons
anterior horns
gray commisure
posterior horns
lateral horns
a mixed nerve consists of
both efferent and afferent fibers
ventral root vs ventral ramus
ventral root
casing of the nerves
ventral ramus
small extentions of the ventral root, found away from the spinal cord
Ventral ramus is the cord/casing that takes the ___ away from __ towards __
nerves
the spinal cord ( ventral root)
the limbs (sensory areas)
efferent nerve fibers
carries ______ from ____ to ____
afferent nerve fibers
carries ____ from ____ to _____
impulses
CNS to Periphery
impulses
periphery to CNS
Cns > periphery _____
efferent nerve fibers
periphery > CNS ___
afferent nerve fibers
efferent fibers aka
somatic motor fibers
efferent (somatic motor ) fibers are found in the ___
ventral root
Afferent nerves conduct nerve impulses from___ to __
receptors to the CNS
The factor most affecting the rate of the impulse conduction is the ___
presence/absence of myelin sheath
_____ contains cell bodies of sensory neurons
dorsal root ganglion
skeletal( ___) muscle contraction is initiated by ____ in ____ ? Be specific
striated
lower motor neurons in the ventral horn of the spinal cord gray matter and in the motor nuclei of the cranial nerves of the brainstem.
definitions
___ towards the midline of the body and ___ away from the midline of the body
medial
lateral
crossectional view of spinal cord segment:
_____ horn is inferior to _____ but superior to ____
lateral
dorsal
ventral
ie (lateral - middle)
cell bodies of motor neurons to skeletal muscles are located in the ____ of the spinal cord
ventral/anterior grey horn
autonomic ( ___) motor neurons
visceral
somatic motor neuron vs somatic sensory neuron
?
Fine control of body motor coordination and balance is a function of the ?
cerebellum
cerebellum is part of the ___brain
hind
parts of the hind brain?
medulla
pons
cerebellum
parts of the forebrain?
cerebrum
dicephalon
cerebellum basic functions
balance and equilibrium
functions of the cerebrum
thinking/conscious though
sensory
perception
motor movement
functions of the dicephalon
homeostasis of many body functions
4 examples of the basic functions of the dicephalon
hormone control
smooth muscle control
muscle control
temperature regulation
the brain stem is in charge of maintaining the ___ such as ____
vital centers
breathing
blood pressure
heart beat
what are the # layers of CT called
3
dura mater
arachnoid mater
pia mater
whats the name of the CT given that consists of the dura mater, pia mater, arachnoid mater?
meninges
specific name of what separates the cerebellum (be specific)
falx cerebelli (name of the dura mater)
____ is the dura mater that separates the cerebellum
falx cerebelli
