Ch 16 and 17 Lec 1 - Nerve Tracts and the ANS Flashcards
two types of sensory/motor pathways
ascending, descending
sensory/motor pathway that conducts sensory impulses
ascending
sensory/motor pathway that conducts motor impulses
descending
sensory and motor pathways blank in complexity
vary
three sensory pathways
first order neuron, second order, third order
sensory patthway that sends info to CNS
first order neuron
sensory pathway that receives impulses from first; spinal cord or brain stem
second order
sensory pathway that carries signal from thalamus to cerebral cortex
third order
how many somatic motor mathways
2
how many autonomic motor pathways
three
somatic motor pathway that is in the CNS
upper motor neuron
somatic motor pathway that is from the CNS to effector
lower motor neurons
autonomic motor pathway that is in CNS
upper motor neuron
autonomic motor pathway that is from CNS to peripheral ganglion
preganglionic neuron
autonomic motor pathway that is from ganglion to effector
postganglionic neuron
ascending pathway where the sides cross in medulla
posterior column pathway
posterior column pathway is for sensory impulses from blank, muscles, tendons, and blank
skin, joints
posterior column pathway perceives things like fine blank, pressure, and body blank
touch, positino
ascending pathway where sides cross in the spinal cord
spinothalamic pathway
two tracts of the spinothalamic pathway
lateral, anterior
tract of the spinothalamic pathway that is for sensation of pain and temperature
lateral
spinothalamic pathway tract that is for sensation of crude touch and pressure
anterior tract
ascending pathways go from blank nerves to blank
spinal, cerebral cortex
ascending pathway that is for proprioception for fine coordination
spinocerebellar
two tracts of the spinocerebellar pathway
anterior, posterior
tract of spinocerebellar pathway where sides cross in spinal cord
anterior
tract of spinocerebellar pathway that does not cross over
posterior tract
in the spinocerebellar pathway there is no synapse in the blank
thalamus
the spinocerebellar pathway never makes it to the blank and is for blank processing
cortex, subconscious
descending pathway that has the corticobubular tract, lateral corticospinal tract, and anterior corticospinal tract
corticospinal
tract of corticospinal pathway that has motor cranial nerves
corticobubular tract
tract of corticospinal pathway that has motor spinal nerves and crosses over in medulla
lateral corticospinal tract
corticospinal pathway tract that has motor spinal nerves and does not cross over
anterior corticospinal tracts
descending pathway that stimulate and inhibit same lower motor neurons as corticospinal
medial pathway
descending pathway that is for muscle tone and precise movements of distal upper limb
lateral pathway
lateral pathway stimulates and inhibits same lower motor neurons as blank
corticospinal
tract of the lateral pathway that starts in the red nucleus and crosses over
rubrospinal tracts
rubrospinal tracts extend to blank region of the spinal cord
cervical
three descending pathways
medial, lateral, corticospinal
three tracts of medial pathway
tectospinal, reticulospinal, vestibulospinal
three tracts of corticospinal pathway
corticobulbar, anterior corticospinal, lateral corticospinal
lateral pathway tract
rubrospinal
this nervous system funcitons continuously and independently
autonomic nervous system
in the autonomic nervous system there is no blank effort needed
conscious
the autonomic nervous system controls blank activities
visceral
the autonomic nervous system has pathways with usually blank neuron(s)
two
the somatic nervous system usually has blank peripheral motor axon(s)
one
autonomic nervous system may result in additional blank and results in an additional blank
ganglia, synapse
the somatic nervous system has no peripheral blank or blank
synapsing, ganglia
two neurons of autonomic nerve fibers
preganglionic, postganglionic
two divisions of the autonomic nervous system
sympathetic, parasympathetic
division of autonomic nervous system for stressful situations
sympathetic
division of the ANS that restores body to restful state
parasympathetic
sympathetic and parasympathetic may blank
work together
sympathetic and parasympathetic often work blank
antagonistically
certain blank may only be innervated by one of the sympathetic or parasympathetic divisions
organs
the sympathetic ganglia is made of the blank of blank neurons
soma, postganglionic
two types of sympathetic ganglia
chain, collateral
sympathetic chain has blank on each side
one
fusion causes individual blank in the sympathetic chain
variability
there are no cervical blank neurons
sympathetic
there are cervical sympathetic blank
ganglia
the chain ganglion is innervated by presynaptic fibers from nerves blank to blank
T1 to L2
in chain preganglionic fibers, there is no cervical blank input
nerve
go to office hours if i don’t get it
okay
preganglionic fibers leave the blank nerve and enter the chain via the blank
spinal, white ramus
there are blank paths that a chain preganglionic impulse can take
three
chain postganglionic fibers exit via the blank
gray ramus
presynaptic fibers go straight through chain ganglion without blank
synapsing
three major collateral ganglia
celiac, superior mesenteric, inferior mesenteric
collateral ganglia deal for the most part with blank processes
digestive
presynaptic fibers go through both the chain and collateral ganglia in this
adrenal medullae
adrenal medullae stimulate the production of the hormones blank and blank
epinephrine, norepinephrine
there are no blank fibers in the adrenal medullae
postganglionic
epinephrine and norepinephrine make up blank
adrenaline
