BIOL 262 Spinal Cord & Nerves of Extremities HW
There are ____ pairs of cervical spinal nerves
8
Name the structure best described as an extension of the pia mater extending laterally to the dura mater
denticulate ligaments
Name the structure best described as the thin meninx in direct contact with the spinal cord
pia mater
The sciatic nerve is composed of two nerves
tibial and common fibular
The _____ nerve supplies most hand muscles
ulnar
Identify the part of the spinal cord best described as the zone containing myelinated axons
white matter
There is _____ pair of coccygeal nerves
1
There are _____ pairs of thoracic spinal nerves
12
There are ____ pairs of spinal nerves
31
There are ____ pairs of sacral nerves
5
There are _____ pairs of lumbar spinal nerves
5
The ______ nerve supplies the diaphragm
phrenic
Identify the region of the spinal cord best described as containing the somatic motor neuron cell bodies
anterior gray horns
Identify the part of the spinal cord best described as the deep and wide groove on the anterior side
anterior median fissure
Name the spinal nerve ramus or branch that contributes to nerves serving the limbs
anterior ramus
Identify the spinal nerve structure best described as the motor branch of a spinal nerve exiting the spinal cord
anterior root
Name the structure best described as the web-like middle meninx
arachnoid mater
The _____ nerve supplies the deltoid and teres minor muscles
axillary
If the anterior ramus of a spinal nerve is severed, there is a ________ functional loss
both (motor and sensory)
If the posterior ramus of a spinal nerve is severed, there is _______ functional loss
both (motor and sensory)
Which nerve plexus does the axillary nerve come out of?
brachial
Which nerve plexus does the radial nerve come out of?
brachial
Which nerve plexus does the ulnar nerve come out of?
brachial
Identify the spinal cord structure best described as a bundle of spinal nerve roots emerging from the inferior end of the spinal cord:
cauda equina
Identify the part of the spinal cord best described as a central space containing cerebrospinal fluid
central canal
Which nerve plexus does the phrenic nerve come out of?
cervical
Identify the part of the spinal cord best described as the tapered inferior end of the spinal cord:
conus medullaris
Name the structure best described as the tough outer meninx
dura mater
Name the connective tissue covering that covers unmyelinated or myelinated axons
endoneurium
Name the structure best described as a space around the spinal cord filled with adipose tissue
epidural space
Name the connective tissue covering that wraps whole nerves
epineurium
The nerve that supplies the anterior thigh is the
femoral nerve
Identify the meninx structure best described as an extension of the pia mater attaching the inferior end of the spinal cord to the coccyx
filum terminale
Identify the part of the spinal cord best described as a connection between the right and left halves of the gray matter in the spinal cord
gray commissure
Identify the part of the spinal cord best described as the zone containing the neuron cell bodies and unmyelinated processes
gray matter
Which nerve plexus does the femoral nerve come out of?
lumbar
Which nerve plexus does the obturator nerve come out of?
lumbar
Identify the part of the spinal cord best described as a bulge in the cord located at the T9-T12 vertebral region
lumbar enlargement
The _____ nerve supplies the flexor carpi radialis
median
The ______ nerve supplies the biceps brachii muscle
musculocutaneous
Name the connective tissue covering that covers fascicles of neuron axons
perineurium
Identify the part of the spinal cord best described as a shallow groove on the dorsal side
posterior median sulcus
Name the spinal nerve ramus or branch that serves the deep muscles and skin of the back
posterior ramus
Identify the spinal nerve structure best described as the sensory branch of a spinal nerve entering the spinal cord:
posterior root
Identify the spinal nerve structure which contains the bodies of sensory neurons:
posterior root ganglion
The _______ nerve supplies the triceps brachii muscles and the extensor digitorum
radial
Name the spinal nerve ramus or branches that belong to the sympathetic motor divison
rami communicantes
Which nerve plexus does the common fibular nerve come out of?
sacral
Which nerve plexus does the pudendal nerve come out of?
sacral
Which nerve plexus does the sciatic nerve come out of?
sacral
Which nerve plexus does the tibial nerve come out of?
sacral
The nerve that supplies the posterior thigh is the
sciatic
Name the structure best described as the meningeal region containing cerebrospinal fluid
subarachnoid space
