Lab 10: The Spinal Cord and Spinal Nerves questions
with verified answers
anterior funiculus Ans✓✓✓the white matter of the spinal cord lying on
either side between the anterior median fissure and the ventral root.
Anterior median fissure Ans✓✓✓a groove along the anterior midline of
the spinal cord that incompletely divides it into symmetrical halves
Brachial plexus Ans✓✓✓C5-C8, T1
Incredibly complex and is divided into trunks, division, cords which
ultimately form five main peripheral nerves.
network of interlacing nerves found in the upper arm area
cauda equina (horse's tail) Ans✓✓✓Spinal nerve roots that extend
beyond the end of the spinal cord (conus medullaris)
Central canal Ans✓✓✓A tiny channel found within the spinal cord and
inferior medulla oblongata
Conus medullaris Ans✓✓✓The tip of the spinal cord, and attached by a
long tissue string called the filum terminale to the coccyx.
Dorsal gray horn Ans✓✓✓location of sensory nuclei
, Dorsal root Ans✓✓✓consists of axons of sensory neurons and attaches
at the posterior of the spinal cord.
Dorsal root ganglion Ans✓✓✓Where the cell bodies of the dorsal root
sensory neurons are in a cluster within the dorsal root.
-A PNS structure
-An excellent indicator of the posterior of a spinal cord section
Each spinal nerve splits into __________ and ___________ rami.
Ans✓✓✓dorsal and ventral
Filum terminale Ans✓✓✓anchors spinal cord to coccyx, long tissue
string called
gray commissure Ans✓✓✓a thin strip of gray matter that surrounds the
central canal of the spinal cord and, along with the anterior white
commissure, connects the two halves of the cord.
How is the arrangement of gray and white matter different in the brain
and spinal cord? Ans✓✓✓In the brain, grey matter is mainly found in
the outer layers, while in the spinal cord it forms the core "butterfly"
shape.
How many pairs of spinal nerves that arise from the fusion of the dorsal
and ventral roots of the spinal cord? Ans✓✓✓31
with verified answers
anterior funiculus Ans✓✓✓the white matter of the spinal cord lying on
either side between the anterior median fissure and the ventral root.
Anterior median fissure Ans✓✓✓a groove along the anterior midline of
the spinal cord that incompletely divides it into symmetrical halves
Brachial plexus Ans✓✓✓C5-C8, T1
Incredibly complex and is divided into trunks, division, cords which
ultimately form five main peripheral nerves.
network of interlacing nerves found in the upper arm area
cauda equina (horse's tail) Ans✓✓✓Spinal nerve roots that extend
beyond the end of the spinal cord (conus medullaris)
Central canal Ans✓✓✓A tiny channel found within the spinal cord and
inferior medulla oblongata
Conus medullaris Ans✓✓✓The tip of the spinal cord, and attached by a
long tissue string called the filum terminale to the coccyx.
Dorsal gray horn Ans✓✓✓location of sensory nuclei
, Dorsal root Ans✓✓✓consists of axons of sensory neurons and attaches
at the posterior of the spinal cord.
Dorsal root ganglion Ans✓✓✓Where the cell bodies of the dorsal root
sensory neurons are in a cluster within the dorsal root.
-A PNS structure
-An excellent indicator of the posterior of a spinal cord section
Each spinal nerve splits into __________ and ___________ rami.
Ans✓✓✓dorsal and ventral
Filum terminale Ans✓✓✓anchors spinal cord to coccyx, long tissue
string called
gray commissure Ans✓✓✓a thin strip of gray matter that surrounds the
central canal of the spinal cord and, along with the anterior white
commissure, connects the two halves of the cord.
How is the arrangement of gray and white matter different in the brain
and spinal cord? Ans✓✓✓In the brain, grey matter is mainly found in
the outer layers, while in the spinal cord it forms the core "butterfly"
shape.
How many pairs of spinal nerves that arise from the fusion of the dorsal
and ventral roots of the spinal cord? Ans✓✓✓31
