Spinal Cord and Spinal Nerves Quiz
rapid and involuntary
Reflexes are described as
median nerve
A person suffering from carpal tunnel syndrome has lost function of the
ipsilateral
A reflex arc in which both the receptor and the effector organs of the reflex are on the same side of the spinal cord is
obturator nerve
Adduction of the thigh involves the
can be used to help locate nerve damage
Dermatomal maps are important clinically because they
ulnar nerve
Following an injury to his arm, a patient complains that he has no sensations from his "pinky." You suspect that he has damaged the
median nerve
Following an injury to his arm, a patient complains that he has no sensations from the thumb, index finger, middle finger, and part of the ring finger. What nerve do you suspect to be damaged?
radial
Improper use of crutches could cause compression of the ________ nerve.
subarachnoid space
In a lumbar puncture (spinal tap), fluid is extracted from the
31
In sum, there are ________ pairs of spinal nerves.
columns and the gray matter into horns
In the spinal cord, white matter is organized into
descending; effectors
Motor pathways are ________ tracts that control ________.
posterior root ganglion
The cell bodies of sensory neurons are located in the
sciatic
The largest and longest nerve in the body is the ________ nerve.
cell bodies of autonomic motor neurons
The lateral horns of the spinal cord contain
femoral
The nerve responsible for innervation (movement) of the quadriceps femoris muscle is the ________ nerve.
axillary nerve
The nerve that innervates the deltoid muscle and receives sensory input from the superolateral lateral arm is the
lower motor neurons
The neurons that directly innervate skeletal muscles are called
foramen magnum
The spinal cord begins at the
2nd lumbar vertebrae
The spinal cord ends at the
motor fibers
The ventral root of a spinal nerve contains
two
There are ________ enlargements of the spinal cord where nerves supplying the extremities enter and leave.
musculocutaneous
Using the biceps brachii to flex the forearm requires innervation of the ________ nerve.
b, a, c, d, e
What is the correct order for the events that occur during a reflex? a: Impulse travels through sensory neuron to the CNS b: A stimulus activates a receptor c: Information is processed by interneurons d: Motor neuron transmits impulse to effector e: Effector responds
cervical, thoracic, lumbar, sacral, coccygeal
What is the correct order for the parts of the spinal cord, from superior to inferior?
filum terminale
What is the thin strand of pia mater that helps to anchor the spinal cord to the coccyx
ulnar
When a person hits their funny bone, they cause temporary damage to the ________ nerve.
sciatic
When a person sits on a hard surface for a period of time, his foot or leg may "go to sleep." This sensation is the result of compressing the ________ nerve.
plantar flexes
When the Achilles tendon is tapped or the bottom of the foot is stroked, the reflexive response is that the foot
tibial nerve
Which nerve is involved when a dancer points his/her toes?
thoracic nerves = 8 pairs
Which of these spinal nerve counts is incorrect? -Thoracic nerves = 8 pairs -Sacral nerves = 5 pairs -Cervical nerves = 8 pairs -Coccygeal nerves = 1 pair -Lumbar nerves = 5 pairs
epidural space
Which space associated with the spinal cord meninges contains areolar connective tissue, blood vessels, and adipose connective tissue?
subarachnoid space
Which space associated with the spinal cord meninges contains cerebrospinal fluid?