CDIS 421: Neuroscience Fundamentals for
Communication Sciences and Disorders
(Answered) 161 Questions and Correct
Answers, 100% Correct. Latest 2024/2025.
sagittal plane
a vertical plane that divides the body into right and left parts
horizontal plane
a flat crosswise plane, such as the horizon
2 parts of the nervous system
central and peripheral
CNS is comprised of
brain and spinal cord
coronal plane
front and back
Dorsal
toward the back (includes posterior spinal cord, superior cerebrum)
Ventral
Toward the belly (includes inferior cerebrum, anterior spinal cord)
, Caudal
toward the tail (includes posterior cerebrum, inferior spinal cord)
Rostral
toward the forehead or nose (includes superior spinal cord, anterior cerebrum)
2 types of cells in the nervous system
neurons and glial cells
Neuron
a cell of the nervous system; made for signaling and communication
Dendrites &/ cell body/soma
where neurons receive signals
Axon
transmits information to other neurons, muscles, or glands
Reflex
an involuntary response to a stimulus (minimally includes sensory/afferent neuron and a
motor/efferent neuron)
Myelin
a fatty substance that helps insulate neurons (specifically axons) and speeds the transmission of
nerve impulses: white appearance
Microglia
consume harmful substances
Astrocytes
form blood brain barrier
Oligodendroglia
glial cells in the CNS that myelinate axons
Schwann cells
glial cells in the PNS that myelinate axons
-70mV to -65mV
voltage of resting membrane potential
+50mV
voltage of action potential
axon hillock
where action potentials are initiated
Communication Sciences and Disorders
(Answered) 161 Questions and Correct
Answers, 100% Correct. Latest 2024/2025.
sagittal plane
a vertical plane that divides the body into right and left parts
horizontal plane
a flat crosswise plane, such as the horizon
2 parts of the nervous system
central and peripheral
CNS is comprised of
brain and spinal cord
coronal plane
front and back
Dorsal
toward the back (includes posterior spinal cord, superior cerebrum)
Ventral
Toward the belly (includes inferior cerebrum, anterior spinal cord)
, Caudal
toward the tail (includes posterior cerebrum, inferior spinal cord)
Rostral
toward the forehead or nose (includes superior spinal cord, anterior cerebrum)
2 types of cells in the nervous system
neurons and glial cells
Neuron
a cell of the nervous system; made for signaling and communication
Dendrites &/ cell body/soma
where neurons receive signals
Axon
transmits information to other neurons, muscles, or glands
Reflex
an involuntary response to a stimulus (minimally includes sensory/afferent neuron and a
motor/efferent neuron)
Myelin
a fatty substance that helps insulate neurons (specifically axons) and speeds the transmission of
nerve impulses: white appearance
Microglia
consume harmful substances
Astrocytes
form blood brain barrier
Oligodendroglia
glial cells in the CNS that myelinate axons
Schwann cells
glial cells in the PNS that myelinate axons
-70mV to -65mV
voltage of resting membrane potential
+50mV
voltage of action potential
axon hillock
where action potentials are initiated
