solution–Expert Verified | Latest Questions 2025
Cell body and processes - What are all neurons comprised of?
Dendrites and axons - What types of processes are there for neurons?
Only one (except pseudounipolar which has two technically, but off of the cell body, only
one) - How many axons can a neuron have?
One or more - How many dendrites can a neuron have?
Only the axon can be myelinated, dendrites are unmyelinated - Of the processes, which
are myelinated?
Lipid - What are myelin sheets primarily composed of?
Saltatory conduction (saltus is Latin for "to jump") - What type of conduction do myelin
sheaths allow?
The terminal boutons of the axon that are the point of contact and transmission between
neurons - What are synapses?
Brain and Spinal cord - What are the two major divisions of the CNS?
Neuroectoderm (except microglial cells) - What germ layer to cells in the CNS derive
from?
-Integrate, process, and coordinate sensory input
-Execute motor responses - What is the function of the CNS?
Gray matter and white matter - What are the anatomical divisions of the CNS?
In spinal cord, the inner, darker portion - What is gray matter?
In the spinal cord, the outer, lighter portion - What is white matter?
Dorsal horn, ventral horn, lateral horn (T1-L2) - What are the anatomical components of
the gray matter?
T1-L2 (and S2-S4) - What section of the spinal cord does the lateral horn form on?
Dorsal region, ventral region, and lateral region (regions are sometimes called columns)
- What are the anatomical components of the white matter?
, Neuron cell bodies, nerve fibers, neuroglial cells - What is in gray matter?
A collection of functionally related neuron cell bodies located in specific regions in the
CNS (may be named) - What are nuclei (in relation to the CNS)?
Somatic motor
Visceral motor
Integrative (interneurons) - What types of neurons are in the CNS?
Contains myelinated and unmyelinated axons as well as neuroglial cells - What is in
white matter?
A collection of functionally related groups of axons (usually named) - What are tracts?
includes neuroglial cells, neuron cell bodies (outside of CNS), and nerve fibers
extending outside CNS - What are the components of the PNS?
Somatic Nervous System (SNS)
Autonomic Nervous System (ANS) - What are the functional divisions of the CNS?
Same as CNS
Somatic Nervous System (SNS)
Autonomic Nervous System (ANS) - What are the functional divisions of the PNS?
Sensation and voluntary motor of the body - What is the SNS associated with?
involuntary visceral motor function - What is the ANS associated with?
Fight or flight - What is associated with the sympathetic nervous system?
Rest and digest - What is associated with the parasympathetic nervous system?
Preganglionic cell bodies in the CNS that extend to and synapse with neurons in ganglia
of PNS - The ANS is considered a two-chain system, what is the first link in the chain?
Postganglionic cell bodies that receive signals from preganglionic axons within ganglia
of PNS and extend to and synapse in walls of blood vessels, organs, or glands - The
ANS is considered a two-chain system, what is the second link in the chain?
Ganglion
Peripheral nerves - What are the anatomical components of the PNS?
A collection of functionally related nerve cell bodies located in PNS - What are
ganglion?
ANS, dorsal roots and some sensory cranial nerves - What are ganglia associated with?