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?