by bivy56


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Front Back
The outermost meninge in the CNS is the ____.
dura mater
The middle meninge in the CNS is the ____.
arachnoid mater
The innermost meninge in the CNS is the ____.
pia mater
Where does the spinal cord end?
L1
The ____ is where the spinal cord ends and forms a cone-shape.
Conus Medullaris
How many pairs of cervical nerves are there?
8
How many pairs of thoracic nerves are there?
12
How many pairs of lumbar nerves are there?
5
How many pairs of sacral nerves are there?
5
The ____ root carries only sensory information.
dorsal
The ____ root carries only motor information.
ventral
The ____ is an extension of the pia mater and arises from the conus medullaris.
Filum Terminale
In the center of the gray commisure, the ____ contains cerebrospinal fluid.
central canal
The ____ of the spinal cord convey nerve impulses for touch, light pressure, vibration, and conscious proprioception.
posterior columns
The ____ of the spinal cord transmit sensations of pain, warmth, coolness, itching, tickling, deep pressure, and crude touch.
spinothamalic tracts
____ rami form plexuses (except T1-T11).
Anterior
Branches of spinal nerves are called ____.
rami (anterior and dorsal)
____: a network of axons.
plexus
The ____ plexus contains the phrenic nerves (important for function of the diaphragm).
Cervical
The cervical plexus is formed by the anterior rami of ____-____.
C1-C5
The Brachial Plexus is formed by the anterior rami of ____.
C5-C8 & T1
All descending tracts in the spinal cord carry ____ information.
motor
All ascending tracts and the posterior compartment in the spinal cord carry ____ information.
sensory
A ____ is where the left and right sides of the spinal cord meet.
commisure
List the 5 important nerves that arise from the brachial plexus:
1.) axillary

2.) musculocutaneous

3.) radial

4.) median

5.) ulnar
____ nerve palsy results in numbness, tingling and pain in the palm and fingers.
Median
____ nerve palsy results in the inability to abduct or adduct fingers.
Ulnar
The ____ plexus is formed by the anterior rami of ____.
L1-L4
The lumbar plexus innervates the (3):
1. ) anterolateral abdominal wall

2.) external genitalia

3.) part of the lower limbs
The ____ nerve is commonly referred to as the "funny bone".
ulnar
The ____ nerve innervates the palm, palmar side of thumb, index, middle, and radial side of ring finger.
median
The ____ nerve innervates the digiti minimi and ulnar side of ring finger.
ulnar
The ____ nerve innervates the elbow flexors.
musculocutaneous
The ____ nerve innervates the elbow extensors.
radial
The femoral nerve comes from which plexus?
Lumbar Plexus (L2,L3,L4)
The sciatic nerve comes from which plexus?
Lumbosacral Plexus
The Lumbosacral Plexus is formed bby the anterior rami of ____ and ____.
L4-L5 and S1-S5
The ____ plexus supplies the buttocks, perineum, and lower limbs.
Lumbosacral
List the 5 components of a reflex arc:
1.) Sensory Receptor

2.) Sensory Neuron

3.) Integrating Center

4.) Motor Neuron

5.) Effector
____: the pathway followed by nerve impulses that produce a reflex.
Reflex Arc
The stretch reflex is a ____ reflex.

a.) monosynaptic

b.) polysynaptic
a.) monosynaptic

The tendon reflex is a ____ reflex.

a.) monosynaptic

b.) polysynaptic
b.) polysynaptic
The only motor voluntary motor track is the ____.
corticospinal
The Flexor (Withdrawal) Reflex is a ____ reflex.
a.) monosynaptic
b.) polysynaptic
b.) polysynaptic
The Crossed Extensor Reflex is a ____ relfex.

a.) monosynaptic

b.) polysynaptic
b.) polysynaptic
____ is the area of the skin that provides sensory input to the CNS via one pair of spinal nerves or the trigeminal nerve.
Dermatome
x of y cards