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;
50 Cards in this Set
- Front
- Back
The spinal cord extends from the foramen magnum of the skull to the first or second lumbar vertebra where it terminates in the... |
filum terminale |
|
How many pairs of spinal nerves do humans have? |
31 pairs of spinal nerves |
|
in cross section, gray/white matter of the spinal cord looks like a butterfly or the letter H |
gray |
|
True or False. The cell bodies of sensory neurons are found in an enlarged area of the dorsal root called the gray commissure. |
False |
|
Fiber tracts conducting impulses to the brain are called the ascending or sensory/motor neurons |
sensory |
|
True or False. because the spinal nerves arise form fusion if the ventral and dorsal roots of the spinal cord, and contain motor and sensory fibers, all the spinal nerves are considered mixed nerves |
True |
|
The ventral rami of all spinal nerves except T2 through T12 form complex networks of nerves known as |
plexuses |
|
Severe injuries to the ___ plexus cause weakness or paralysis of the entire upper limb |
brachial |
|
true or false. the femoral nerve is the largest nerve from the sacral plexus |
false |
|
the sciatic nerve divides into the tibial and poster femoral cutaneous/common fibular nerves |
common fibular nerves |
|
the most superior boundary of the spinal cord |
foramen magnum |
|
meningeal extension beyond the spinal cord terminus |
filum terminale |
|
spinal cord terminus |
conus medullaris |
|
collection of spinal nerves traveling in the vertebral canal below the terminus of the spinal cord |
cauda equina. horse tail. |
|
review number 2 on page 323 |
|
|
primary neuron found in the dorsal horn |
interneurons |
|
primary neuron found in the ventral horn |
motor neuron |
|
neuron in the dorsal root ganglion |
sensory |
|
fiber type in ventral root |
motor |
|
fiber type in dorsal root |
sensory |
|
fiber types in spinal nerves |
both sensory and motor |
|
where in the vertebral column is a lumber puncture generally done? why is this the site of choice? |
L3-L5 reduces chances of damage to the spinal cord |
|
the spinal cord is enlarged in two regions the ___ and ____ what is the significance of these enlargements? |
cervical and lumbar regions more nerves need more space to fit |
|
how does the position of the gray and white matter in the spinal cord and the cerebral hemispheres? |
spinal-white outside, gray inside brain-white inside, gray outside |
|
where in the body does the varicella-zoster virus lie dormant? |
dorsal root ganglion |
|
do you think it's possible to get shingles more than once? why? |
yes. the virus is dormant and waits for an ideal environment. |
|
uncoordinated movement is damage to which tracts? |
dorsal columns (fasciculus cuneatus and fasciculus gracilis) lateral corticospinal tract ventral corticospinal tract ventral spinothalamic tract |
|
lack of voluntary movement is damage to which tract? |
tectospinal tract ventral spinothalamic tract |
|
tremors, jerky movements is damage to which tract? |
dorsal columns (fasciculus cuneatus and fasciculus gracilis_ lateral corticospinal tract ventral corticospinal tract ventral spinothalamic tract |
|
diminished pain perception is damage to which tract? |
ventral spinothalamic tract |
|
diminished sense of touch is damage to which tract? |
dorsal columns (fasciculus cuneatus and fasciculus gracilis) lateral corticospinal tract |
|
compare and contrast the meninges of the spinal cord and the brain |
both connective tissue, protection, pia matter is bound tightly |
|
how can you distinguish the dorsal from the ventral horns? |
tips of the ventral horn are broader, front, fat, and thicker dorsal in the pack, pointy |
|
cervical nerve numbers |
c1-c8 |
|
lumbar nerve numbers |
l1-l5 |
|
sacral nerve numbers |
s1-s5 |
|
thoracic nerve numbers |
t1-t12 |
|
number 13 page 325 |
|
|
loss of sensory function |
dorsal root of a spinal nerve |
|
loss of both motor and sensory function |
ventral ramus of a spinal nerve |
|
loss of motor function |
ventral root of a spinal nerve |
|
define nerve plexus |
intertwining of nerves |
|
major nerve that serves the head, neck, shoulders |
cervical nerve plexus |
|
major nerve that serves the diaphragm |
phrenic nerve |
|
major nerve that serves the posterior thigh |
posterior femoral cutaneous nerve |
|
major nerves that serve the leg and foot |
tibial nerve/common fibular nerve |
|
name 2 major nerves that serve anterior forearm muscles |
medial nerve and ulnar nerve |
|
major nerves that serves the abdominal wall (name plexus only) |
lumbar plexus |
|
name the major nerve that serves the anterior thigh |
femoral nerve |
|
name the major nerve that serves the medial side of the hand |
ulnar nerve |