Question 1

-What does "D" represent?

Accepted Answer

A) central canal 
B) ventral root 
C) dorsal root ganglion 
D) spinal nerve 
E) dorsal root 
A) central canal 
B) ventral root 
C) dorsal root ganglion 
D) spinal nerve 
E) dorsal root

Question 2

What is found in the dorsal root ganglion?

Accepted Answer

A) The cell bodies of multipolar motor neurons. 
B) The cell bodies of pseudo-unipolar sensory neurons. 
C) The cell bodies of multipolar interneurons. 
D) The cell bodies of bipolar sensory neurons. 
A) The cell bodies of multipolar motor neurons. 
B) The cell bodies of pseudo-unipolar sensory neurons. 
C) The cell bodies of multipolar interneurons. 
D) The cell bodies of bipolar sensory neurons.

Question 3

Match the term with the correct definition.
-dura mater

Accepted Answer

A) functional unit of the nervous system 
B) most superficial and thickest meninx 
C) the middle meninx 
D) the meninx bound tightly to brain and spinal cord 
E) separates dura mater from periosteum 
A) functional unit of the nervous system 
B) most superficial and thickest meninx 
C) the middle meninx 
D) the meninx bound tightly to brain and spinal cord 
E) separates dura mater from periosteum

Question 4

-Label component "E" on the reflex arc.

Accepted Answer

A) sensory receptor 
B) effector organ 
C) sensory neuron 
D) motor neuron 
E) interneuron 
A) sensory receptor 
B) effector organ 
C) sensory neuron 
D) motor neuron 
E) interneuron

Question 5

In the PNS,nerves are held together by

Accepted Answer

The answer of In the PNS,nerves are held together by...

Question 6

Muscles and glands that are capable of producing a response when stimulated by motor neurons are called

Accepted Answer

A) aponeuroses. 
B) effectors. 
C) neuromodulators. 
D) receptors. 
E) sensory organs. 
A) aponeuroses. 
B) effectors. 
C) neuromodulators. 
D) receptors. 
E) sensory organs.

Question 7

Which portion of a reflex arc is most likely to be located entirely within the central nervous system?

Accepted Answer

A) sensory neuron 
B) motor neuron 
C) effector cell 
D) interneuron 
E) receptor cell 
A) sensory neuron 
B) motor neuron 
C) effector cell 
D) interneuron 
E) receptor cell

Question 8

Gamma motor neurons

Accepted Answer

A) are located in tendons. 
B) transmit action potentials to skeletal muscle. 
C) regulate the sensitivity of the muscle spindle. 
D) enable the brain to perceive that a muscle has been stretched. 
E) innervate the whole muscle. 
A) are located in tendons. 
B) transmit action potentials to skeletal muscle. 
C) regulate the sensitivity of the muscle spindle. 
D) enable the brain to perceive that a muscle has been stretched. 
E) innervate the whole muscle.

Question 9

Match the disorder with its description.
-sciatica

Accepted Answer

A) pain radiating down the back of the thigh and leg 
B) stiffness in the neck and headache 
C) inflammation of a nerve 
D) pain along a nerve tract 
E) loss of sensation 
A) pain radiating down the back of the thigh and leg 
B) stiffness in the neck and headache 
C) inflammation of a nerve 
D) pain along a nerve tract 
E) loss of sensation

Question 10

The cutaneous sensory distribution of a spinal nerve can be mapped as a

Accepted Answer

A) dermatome. 
B) plexitome. 
C) microtome. 
D) myotome. 
E) superdome. 
A) dermatome. 
B) plexitome. 
C) microtome. 
D) myotome. 
E) superdome.

Question 11

A reflex that protects limbs by removing them from painful stimuli is the

Accepted Answer

A) stretch reflex. 
B) crossed extensor reflex. 
C) Golgi tendon reflex. 
D) alternating reflex. 
E) withdrawal reflex 
A) stretch reflex. 
B) crossed extensor reflex. 
C) Golgi tendon reflex. 
D) alternating reflex. 
E) withdrawal reflex

Question 12

Match the disorder with its description.
-neuralgia

Accepted Answer

A) pain radiating down the back of the thigh and leg 
B) stiffness in the neck and headache 
C) inflammation of a nerve 
D) pain along a nerve tract 
E) loss of sensation 
A) pain radiating down the back of the thigh and leg 
B) stiffness in the neck and headache 
C) inflammation of a nerve 
D) pain along a nerve tract 
E) loss of sensation

Question 13

The __________ __________ is the basic functional unit of the nervous system and is capable of receiving a stimulus and producing a response.

Accepted Answer

The answer of The __________ __________ is the basic functional...

Question 14

Match the nerve to the correct function.
-median nerve

Accepted Answer

A) provides motor innervation to the biceps brachii 
B) innervates two forearm muscles plus most of the intrinsic hand muscles 
C) innervates all but one of the flexor muscles of the forearm and most of the hand muscles near the thumb 
D) innervates the deltoid and teres minor muscles 
E) innervates the triceps brachii 
A) provides motor innervation to the biceps brachii 
B) innervates two forearm muscles plus most of the intrinsic hand muscles 
C) innervates all but one of the flexor muscles of the forearm and most of the hand muscles near the thumb 
D) innervates the deltoid and teres minor muscles 
E) innervates the triceps brachii

Question 15

The spinal cord begins at the

Accepted Answer

A) cerebellum. 
B) medulla oblongata. 
C) foramen magnum. 
D) conus medullaris 
E) 1st cervical vertebrae. 
A) cerebellum. 
B) medulla oblongata. 
C) foramen magnum. 
D) conus medullaris 
E) 1st cervical vertebrae.

Question 16

Ventral rami of some spinal nerves join with each other to form a

Accepted Answer

A) ganglion. 
B) dermatome. 
C) cord. 
D) plexus. 
E) nerve. 
A) ganglion. 
B) dermatome. 
C) cord. 
D) plexus. 
E) nerve.

Question 17

Stimulation of the Golgi tendon organs result in which of the following changes in the reflex arc?

Accepted Answer

A) stimulation of a stimulatory association neuron 
B) stimulation of an inhibitory neuron 
C) decreased action potentials in alpha motor neurons 
D) contraction of skeletal muscle fibers 
E) stimulation of an inhibitory neuron and decreased action potentials in alpha motor neurons 
A) stimulation of a stimulatory association neuron 
B) stimulation of an inhibitory neuron 
C) decreased action potentials in alpha motor neurons 
D) contraction of skeletal muscle fibers 
E) stimulation of an inhibitory neuron and decreased action potentials in alpha motor neurons

Question 18

An injury to the wrist that results in edema in the carpal tunnel would compress the

Accepted Answer

A) axillary nerve. 
B) radial nerve. 
C) musculocutaneous nerve. 
D) ulnar nerve. 
E) median nerve. 
A) axillary nerve. 
B) radial nerve. 
C) musculocutaneous nerve. 
D) ulnar nerve. 
E) median nerve.

Question 19

If a person fell down the steps and then developed pain down his anterior thigh into the knee,which of the following spinal nerves was probably damaged?

Accepted Answer

A) obturator 
B) femoral 
C) tibial 
D) common fibular (peroneal) 
E) pudendal 
A) obturator 
B) femoral 
C) tibial 
D) common fibular (peroneal) 
E) pudendal

Question 20

Structurally,the simplest reflex is the

Accepted Answer

A) stretch reflex. 
B) Golgi tendon reflex. 
C) reciprocal reflex. 
D) alternating reflex. 
E) withdrawal reflex. 
A) stretch reflex. 
B) Golgi tendon reflex. 
C) reciprocal reflex. 
D) alternating reflex. 
E) withdrawal reflex.

Exam 12: Spinal Cord and Spinal Nerves

-What does "D" represent?

What is found in the dorsal root ganglion?

Match the term with the correct definition. -dura mater

-Label component "E" on the reflex arc.

In the PNS,nerves are held together by

Muscles and glands that are capable of producing a response when stimulated by motor neurons are called

Which portion of a reflex arc is most likely to be located entirely within the central nervous system?

Gamma motor neurons

Match the disorder with its description. -sciatica

The cutaneous sensory distribution of a spinal nerve can be mapped as a

A reflex that protects limbs by removing them from painful stimuli is the

Match the disorder with its description. -neuralgia

The __________ __________ is the basic functional unit of the nervous system and is capable of receiving a stimulus and producing a response.

Match the nerve to the correct function. -median nerve

The spinal cord begins at the

Ventral rami of some spinal nerves join with each other to form a

Stimulation of the Golgi tendon organs result in which of the following changes in the reflex arc?

An injury to the wrist that results in edema in the carpal tunnel would compress the

If a person fell down the steps and then developed pain down his anterior thigh into the knee,which of the following spinal nerves was probably damaged?

Structurally,the simplest reflex is the

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