Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
55 Cards in this Set
- Front
- Back
|
located in the cervical part of the spinal cord and innervates the upper limbs
|
cervical elargement
|
|
|
located in the lumbar and sacral parts of the spinal cord and innervates the lower limbs
|
lubosacral enlargement
|
|
|
the tapering inferior end of the spinal cord
|
conus medullaris
|
|
|
inferiro to the conus medullaris
project inferiorly from the spinal cord |
cauda equina
|
|
|
a thinn strand of pia mater that helps anchor the spinal cord to the coccyx
|
filum terminale
|
|
|
the spinal cord gives rise to ______ that connect the CNS to muscles, receptors and glands
|
thirty-one pairs of spinal nerves
|
|
|
lies between the dura mater and periosteum covering the inner walls of the vertebra.
houses areolar connective tissue, blood vessels, and adipose connective tissue |
epidural space
|
|
|
a narrow ______ separates the dura mater from teh arachnoid. This space is a _____
|
subdural space
potential space |
|
|
deep to the dura mater and the subdural space
|
arachnoid
|
|
|
a real space filled with cerebral spinal fluid
|
subarachnoid space
|
|
|
the spinal cord is partitioned into an ____ gray matter region and an ____ white matter region
|
inner
outer |
|
|
after leaving the intervertebral foramen, a typical spinal nerve splits into branches termed
|
rami
|
|
|
the smaller of the two main branches and innervates the deep muscles of the back plus skin of the back
|
dorsal ramus
|
|
|
the larger of the two main branches and innervates the anterior and lateral portions of the trunk and the upper and lower limbs
|
ventral ramus
|
|
|
a specific segment of skin supplied by a single pair of spinal nerves
|
dermatome
|
|
|
a network of interweaving anterior rami of spinal nerves
|
nerve plexus
|
|
|
Nerve Plexuses
|
cervical plexus
brachial plexus lumbosacral plexus |
|
|
spinal nerves T1-T11
|
intercostal nerves because they travel in the intercostal spaces between adjacent ribs
|
|
|
spinal nerve T12
|
subcostal nerve because it arises below the ribs
|
|
|
intercostal nerve T1
|
forms part of the brachial plexus
|
|
|
intercostal nerves T2-T6
|
innervate the intercostal muscles and are sensory for the anterior chest wall
|
|
|
intercoastal nerves T7-T12
|
innervate the intercoastal muscles, the abdominal muscles and the overlying skin
(the anterolateral abdominal wall) |
|
|
key dermatome
|
T10 at the umbilicus
|
|
|
formed by vental rami of spinal nerves C1 thru C4
|
cervical plexus
|
|
|
originates from C3, C4, C5
|
phrenic nerve
(3,4,5 keep the diaphragm alive) |
|
|
network of nerves that suupply the upper limbs
|
brachial plexuses
|
|
|
ventral (anterior) rami of C5-T1 form
|
each brachial plexus
|
|
|
_____ of C5-T1 form the roots of the brachial plexus
|
anterior rami
|
|
|
superior trunk
|
nerves C5 and C6
|
|
|
middle trunk
|
nerve C7
|
|
|
inferior trunk
|
nerves C8 and T1
|
|
|
formed from the ventral (anterior) rami of spinal nerves L4-S4
|
lumbosacral plexuses
|
|
|
the largest and longest nerve in the body
|
sciatic nerve
|
|
|
stretch reflex
|
monosynaptic reflex arc
when a stimulus results in the stretching of a muscle, the muscle relexively contracts |
|
|
stretch in a muscle is monitored by a stretch receptor called the ____
|
muscle spindle
|
|
|
innervates gluteal region and most of lower limb
|
sacral plexus
|
|
|
contains axons of sensory neurons
|
posterior root
|
|
|
strand of pia mater that anchors spinal cord to coccyx
|
filum terminale
|
|
|
composed of tracts and funiculi
|
white matter
|
|
|
innervates infrahyoid muscles
|
cervical plexus
|
|
|
forms anterior and lateral horns
|
basal plate
|
|
|
rapid, involuntary motor reaction of a muscle
|
reflex
|
|
|
contains cell bodies of autonomic motor neurons
|
lateral horn
|
|
|
a segment of skin supplied by a spinal nerve
|
dermatome
|
|
|
innervates anterior thigh muscles
|
femoral nerve
|
|
|
the tapered inferior end of the spinal cord is called the
a. conus medullaris b. filum terminale c. cauda equina d. posterior root |
A. conus medullaris
|
|
|
the anterior root of a spinal nerve contains
a. axons of both motor and sensory neurons b. axons of sensory neurons only c. interneurons d. axons of motor neurons only |
D. axons of motor neurons only
|
|
|
identify the meningeal layer immediately deep to the subdural space
a. pia mater b. arachnoid c. epidural space d. dura mater |
B. arachnoid
|
|
|
axons cross from one side of the spinal cord to the other through a region called the
a. lateral horn b. posterior horn c. gray commissure d. anterior horn |
C. gray commissure
|
|
|
the radial nerve originates from the ____ plexus
a. cervical b. lumbar c. sacral d. brachial |
D. brachial
|
|
|
which structure provides motor innervation to the deep back muscles and receives sensory information from the skin of the back?
a. anterior ramus b. anterior root c. posterior ramus d. posterior root |
C. posterior ramus
|
|
|
Lower limbs are supplied by neurons from the _____ of the spinal cord
a. lumbosacral enlargement b. thoracic region c. cervical enlargement d. all of these are correct |
A. lumbosacral enlargement
|
|
|
the subarachnoid space contains _____, and teh epidural space contains _____.
a. CSF; fat, connective tissue, and blood vessels b. fat, connective tissue, and blood vessels; blood c. CSF; pia mater d. fat, connective tissue, and blood vessels; CSF |
A. CSF; fat, connective tissue, and blood vessels
|
|
|
the white matter of the spinal cord is composed primarily of
a. unmyelinated axons b. neurolemmocytes and satellite cells c. myelinated axons d. cell bodies of neurons |
C. myelinated axons
|
|
|
which statement is true about intercostal nerves?
a. they are formed from the posterior rami of spinal nerves b. they form a thoracic plexus of nerves c. they originate from the thoracic part of the spinal cord d. they innervate the deep back muscles of the thoracic region |
C. they originate from the throacic part of the spinal cord
|
