Chapter 13: Spinal Cord and Spinal Nerves Review
questions with verified answers
"horse tail" spinal segments fan out from the conus medullaris and
resemble the hairs of a horse Ans✓✓✓cauda equina
a bridge of axons crossing from one side of the spinal cord to the other
side Ans✓✓✓gray commisure
a bundle of fibers (myelinated axons and dendrites) with the central
nervous system Ans✓✓✓tract
a collection of cell bodies of neurons located out of the CNS
Ans✓✓✓ganglion
a deeper groove on the anterior surface of the spinal cord
Ans✓✓✓anterior median sulcus
a narrow canal which runs the length of the spinal cord; it is located in
the center of the gray commisure and contains cerebrospinal fluid from
the ventricles of the brain Ans✓✓✓central canal
a non-nervous fibrous C.T. sheet that anchors the spinal cord to the
coccyx . It is a continuation of the inner-most protective covering of the
brain called pia mater. Ans✓✓✓filum terminale
, A pin prick is picked up by the receptor and the sensory neuron sends
the impulse to the spinal cord via the dorsal root. A synapse occurs with
an interneuron in the gray matter of the spinal cord. The interneuorn
synapses with the motor neuron and the impulse is sent out the ventral
root to the effector. What is this an example of? Ans✓✓✓Flexor Reflex
a shallow long groove on the posterior surface of the spinal cord
Ans✓✓✓posterior median sulcus
A thin mesh of elastic and collagen fibers which is in close association
to the brain and spinal cord. Ans✓✓✓pia mater
Axons of ____ ___ exit the spinal cord as a ______ ___.
Ans✓✓✓motor neurons, ventral root
below the lumbar enlargement at the end of the spinal cord is an area
that forms a cone shaped extremity in the area of the first and second
lumbar vertebra Ans✓✓✓conus medullaris
braid, a network of interwoven nerves of adjacent ventral rami
Ans✓✓✓plexus
dense fibrous C.T. covering the whole nerve Ans✓✓✓epineurium
fibers of the perinerium which invaginate to cover each of the fibers
(axon and dendrites) of the fascicles Ans✓✓✓endoneurium
questions with verified answers
"horse tail" spinal segments fan out from the conus medullaris and
resemble the hairs of a horse Ans✓✓✓cauda equina
a bridge of axons crossing from one side of the spinal cord to the other
side Ans✓✓✓gray commisure
a bundle of fibers (myelinated axons and dendrites) with the central
nervous system Ans✓✓✓tract
a collection of cell bodies of neurons located out of the CNS
Ans✓✓✓ganglion
a deeper groove on the anterior surface of the spinal cord
Ans✓✓✓anterior median sulcus
a narrow canal which runs the length of the spinal cord; it is located in
the center of the gray commisure and contains cerebrospinal fluid from
the ventricles of the brain Ans✓✓✓central canal
a non-nervous fibrous C.T. sheet that anchors the spinal cord to the
coccyx . It is a continuation of the inner-most protective covering of the
brain called pia mater. Ans✓✓✓filum terminale
, A pin prick is picked up by the receptor and the sensory neuron sends
the impulse to the spinal cord via the dorsal root. A synapse occurs with
an interneuron in the gray matter of the spinal cord. The interneuorn
synapses with the motor neuron and the impulse is sent out the ventral
root to the effector. What is this an example of? Ans✓✓✓Flexor Reflex
a shallow long groove on the posterior surface of the spinal cord
Ans✓✓✓posterior median sulcus
A thin mesh of elastic and collagen fibers which is in close association
to the brain and spinal cord. Ans✓✓✓pia mater
Axons of ____ ___ exit the spinal cord as a ______ ___.
Ans✓✓✓motor neurons, ventral root
below the lumbar enlargement at the end of the spinal cord is an area
that forms a cone shaped extremity in the area of the first and second
lumbar vertebra Ans✓✓✓conus medullaris
braid, a network of interwoven nerves of adjacent ventral rami
Ans✓✓✓plexus
dense fibrous C.T. covering the whole nerve Ans✓✓✓epineurium
fibers of the perinerium which invaginate to cover each of the fibers
(axon and dendrites) of the fascicles Ans✓✓✓endoneurium
