1
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EXSC224 EXAM 1 Questions and Answers
(100% Correct Answers) Already Graded
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Sensory information comes in through the _____ root [ ANS: ] Dorsal
Root
Motor information comes in through the _____ root [ ANS: ] Ventral
Root
What are the 4 neural pathways [ ANS: ] DCML, SC, ST, CS
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Can neural pathways carry processed information? [ ANS: ] Yes,
like memories
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Terminology for the sensory pathways [ ANS: ] "X order neurons"
Terminology for motor pathways [ ANS: ] Upper, lower neuron +
Interneuron
DCML pathway function [ ANS: ] Associated with discriminative
touch information
ST pathway function [ ANS: ] Pain (nociceptors), temperature
(thermoceptors), and crude touch (Pacinian and Ruffini
Corpuscles = mechanoreceptors)
SC pathway function [ ANS: ] Proprioception of muscle spindles,
joint receptors, tendon organs, mechanoceptors
CS pathway function [ ANS: ] Motor pathway that activates
skeletal muscle
Other name for CS pathway [ ANS: ] Pyramidal pathway
SC pathway # of neurons [ ANS: ] 2
, 2
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3 Roles of the nervous system [ ANS: ] sensory input, integration,
motor output
Sensory input [ ANS: ] Information gathered by sensory receptors
about internal + external changes. Detects things in our
environment
Integration [ ANS: ] Interpretation of the sensory input. From
peripheral receptors into the CNS only
Where does integration of sensory input take place? [ ANS: ] CNS
Motor output examples [ ANS: ] Glandular secretion, contraction
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of skeletal/smooth muscle, activation of effector organs
CNS roles [ ANS: ] Integration, conscious thought, control centers
PNS components [ ANS: ] Cranial and spinal nerves
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role of PNS [ ANS: ] Communication lines between the CNS and
the remainder of the body
Sensory nerves are afferent/efferent [ ANS: ] Afferent
Motor nerves are afferent/efferent [ ANS: ] Efferent
Sensory somatic vs visceral somatic [ ANS: ] Body surface vs organs
Somatic Nervous System is _____ [ ANS: ] Voluntary
Role of the somatic nervous system [ ANS: ] Conduct impulses from
the CNS to skeletal muscles
Autonomic nervous system is ____ [ ANS: ] involuntary
Role of the autonomic nervous system [ ANS: ] Conduct impulses
from CNS to cardiac muscle, smooth muscle, and glands
Autonomic NS can be ___ or ____ [ ANS: ] Parasympathetic or
Sympathetic
, 3
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Sympathetic NS [ ANS: ] Mobilizes body systems during activity
Parasympathetic NS [ ANS: ] Conserves energy, promotes house-
keeping functions during rest (rest and digest)
Neuroglia is also known as ___ [ ANS: ] Glial cells
Role of neuroglia [ ANS: ] Make the neurons function better and
support functions of the nervous system
CNS neuroglia (list) [ ANS: ] Astrocytes, oligodendrocytes,
ependymal cells, microglia
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PNS neuroglia (list) [ ANS: ] Satellite cells, schwann cells
Neurons [ ANS: ] Excitable cells that transmit information at
synapses signals
Guru01 - Stuvia
Principal cell types in the nervous system [ ANS: ] Neuroglia and
Neurons
Astrocytes Roles: [ ANS: ] Regulate access to nutrients for neuron,
hold CNS together, take care of environment of neurons
Where do astrocytes cling? [ ANS: ] Neurons, synaptic endings,
and capillaries
Is there connective tissue in the CNS? [ ANS: ] No
What helps determine capillary permeability [ ANS: ] Astrocytes
How do astrocytes regulate capillary permeability [ ANS: ] They
allow tight junctions to relax
Microglia roles [ ANS: ] Immune cell, dendritic cell, cleanup
Microglia structure [ ANS: ] small, ovoid cells with thorny processes
What migrates towards dead neurons? What do they do there? [
ANS: ] Microglia ; They pick them up/remove them
For Expert help and assignment solutions, +254707240657
EXSC224 EXAM 1 Questions and Answers
(100% Correct Answers) Already Graded
A+
Sensory information comes in through the _____ root [ ANS: ] Dorsal
Root
Motor information comes in through the _____ root [ ANS: ] Ventral
Root
What are the 4 neural pathways [ ANS: ] DCML, SC, ST, CS
© 2025 Assignment Expert
Can neural pathways carry processed information? [ ANS: ] Yes,
like memories
Guru01 - Stuvia
Terminology for the sensory pathways [ ANS: ] "X order neurons"
Terminology for motor pathways [ ANS: ] Upper, lower neuron +
Interneuron
DCML pathway function [ ANS: ] Associated with discriminative
touch information
ST pathway function [ ANS: ] Pain (nociceptors), temperature
(thermoceptors), and crude touch (Pacinian and Ruffini
Corpuscles = mechanoreceptors)
SC pathway function [ ANS: ] Proprioception of muscle spindles,
joint receptors, tendon organs, mechanoceptors
CS pathway function [ ANS: ] Motor pathway that activates
skeletal muscle
Other name for CS pathway [ ANS: ] Pyramidal pathway
SC pathway # of neurons [ ANS: ] 2
, 2
For Expert help and assignment solutions, +254707240657
3 Roles of the nervous system [ ANS: ] sensory input, integration,
motor output
Sensory input [ ANS: ] Information gathered by sensory receptors
about internal + external changes. Detects things in our
environment
Integration [ ANS: ] Interpretation of the sensory input. From
peripheral receptors into the CNS only
Where does integration of sensory input take place? [ ANS: ] CNS
Motor output examples [ ANS: ] Glandular secretion, contraction
© 2025 Assignment Expert
of skeletal/smooth muscle, activation of effector organs
CNS roles [ ANS: ] Integration, conscious thought, control centers
PNS components [ ANS: ] Cranial and spinal nerves
Guru01 - Stuvia
role of PNS [ ANS: ] Communication lines between the CNS and
the remainder of the body
Sensory nerves are afferent/efferent [ ANS: ] Afferent
Motor nerves are afferent/efferent [ ANS: ] Efferent
Sensory somatic vs visceral somatic [ ANS: ] Body surface vs organs
Somatic Nervous System is _____ [ ANS: ] Voluntary
Role of the somatic nervous system [ ANS: ] Conduct impulses from
the CNS to skeletal muscles
Autonomic nervous system is ____ [ ANS: ] involuntary
Role of the autonomic nervous system [ ANS: ] Conduct impulses
from CNS to cardiac muscle, smooth muscle, and glands
Autonomic NS can be ___ or ____ [ ANS: ] Parasympathetic or
Sympathetic
, 3
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Sympathetic NS [ ANS: ] Mobilizes body systems during activity
Parasympathetic NS [ ANS: ] Conserves energy, promotes house-
keeping functions during rest (rest and digest)
Neuroglia is also known as ___ [ ANS: ] Glial cells
Role of neuroglia [ ANS: ] Make the neurons function better and
support functions of the nervous system
CNS neuroglia (list) [ ANS: ] Astrocytes, oligodendrocytes,
ependymal cells, microglia
© 2025 Assignment Expert
PNS neuroglia (list) [ ANS: ] Satellite cells, schwann cells
Neurons [ ANS: ] Excitable cells that transmit information at
synapses signals
Guru01 - Stuvia
Principal cell types in the nervous system [ ANS: ] Neuroglia and
Neurons
Astrocytes Roles: [ ANS: ] Regulate access to nutrients for neuron,
hold CNS together, take care of environment of neurons
Where do astrocytes cling? [ ANS: ] Neurons, synaptic endings,
and capillaries
Is there connective tissue in the CNS? [ ANS: ] No
What helps determine capillary permeability [ ANS: ] Astrocytes
How do astrocytes regulate capillary permeability [ ANS: ] They
allow tight junctions to relax
Microglia roles [ ANS: ] Immune cell, dendritic cell, cleanup
Microglia structure [ ANS: ] small, ovoid cells with thorny processes
What migrates towards dead neurons? What do they do there? [
ANS: ] Microglia ; They pick them up/remove them
