Question 1

Which of the following describes the posterior root ganglion?

Accepted Answer

A) contains axons of motor neurons 
B) contains axons of sensory neurons 
C) contains cell bodies of motor neurons 
D) contains cell bodies of sensory neurons 
E) contains interneurons 
A) contains axons of motor neurons 
B) contains axons of sensory neurons 
C) contains cell bodies of motor neurons 
D) contains cell bodies of sensory neurons 
E) contains interneurons

Question 2

Differentiate between sensory nuclei and motor nuclei.

Accepted Answer

A) Sensory nuclei receive and relay sensory information to peripheral receptors; motor nuclei issue motor commands to peripheral receptors. 
B) Sensory nuclei receive and relay sensory information from peripheral receptors; motor nuclei issue motor commands to peripheral receptors. 
C) Sensory nuclei receive and relay sensory information from peripheral receptors; motor nuclei issue motor commands from peripheral receptors. 
D) Sensory nuclei receive and relay sensory information to peripheral receptors; motor nuclei issue motor commands from peripheral receptors. 
E) Sensory nuclei receive and relay sensory information from the CNS; motor nuclei issue motor commands to the CNS. 
A) Sensory nuclei receive and relay sensory information to peripheral receptors; motor nuclei issue motor commands to peripheral receptors. 
B) Sensory nuclei receive and relay sensory information from peripheral receptors; motor nuclei issue motor commands to peripheral receptors. 
C) Sensory nuclei receive and relay sensory information from peripheral receptors; motor nuclei issue motor commands from peripheral receptors. 
D) Sensory nuclei receive and relay sensory information to peripheral receptors; motor nuclei issue motor commands from peripheral receptors. 
E) Sensory nuclei receive and relay sensory information from the CNS; motor nuclei issue motor commands to the CNS.

Question 3

Describe the composition of the gray matter of the spinal cord.

Accepted Answer

A) myelinated axons 
B) cell bodies of neurons,neuroglia,and unmyelinated axons 
C) myelinated axons and unmyelinated axons 
D) neuroglia and spinal meninges 
E) spinal meninges 
A) myelinated axons 
B) cell bodies of neurons,neuroglia,and unmyelinated axons 
C) myelinated axons and unmyelinated axons 
D) neuroglia and spinal meninges 
E) spinal meninges

Question 4

Figure 12-1
-What is the function of the structure labeled "12"?

Accepted Answer

A) control of skeletal muscle 
B) somatic sensory receiving 
C) visceral sensory receiving 
D) control of visceral effectors 
E) ascending pathway 
A) control of skeletal muscle 
B) somatic sensory receiving 
C) visceral sensory receiving 
D) control of visceral effectors 
E) ascending pathway

Question 5

Which ramus carries sensory information from the limbs?

Accepted Answer

A) anterior ramus 
B) posterior ramus 
C) medial ramus 
D) lateral ramus 
E) rami communicantes 
A) anterior ramus 
B) posterior ramus 
C) medial ramus 
D) lateral ramus 
E) rami communicantes

Question 6

Cerebrospinal fluid flows within the

Accepted Answer

A) filum terminale. 
B) subarachnoid space. 
C) dura mater. 
D) pia mater. 
E) arachnoid mater. 
A) filum terminale. 
B) subarachnoid space. 
C) dura mater. 
D) pia mater. 
E) arachnoid mater.

Question 7

Which spinal nerves are not part of a nerve plexus?

Accepted Answer

A) T1-T12 
B) C1-C2 
C) T2-T11 and Co1 
D) S1-S5 
E) L1-L5 
A) T1-T12 
B) C1-C2 
C) T2-T11 and Co1 
D) S1-S5 
E) L1-L5

Question 8

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the

Accepted Answer

A) dura mater. 
B) arachnoid mater. 
C) epidural space. 
D) subarachnoid space. 
E) cerebral ventricles. 
A) dura mater. 
B) arachnoid mater. 
C) epidural space. 
D) subarachnoid space. 
E) cerebral ventricles.

Question 9

Through which root of a spinal nerve does visceral sensory information arrive?

Accepted Answer

A) anterior root 
B) posterior root 
C) anterior root if the sensory receptors are on the anterior portion of the body and posterior root if the sensory receptors are on the posterior surface of the body 
D) anterior root if the sensory receptors are superior to the spinal cord and posterior root if the sensory receptors are inferior to the spinal cord 
E) both anterior root and posterior root can receive visceral sensory information 
A) anterior root 
B) posterior root 
C) anterior root if the sensory receptors are on the anterior portion of the body and posterior root if the sensory receptors are on the posterior surface of the body 
D) anterior root if the sensory receptors are superior to the spinal cord and posterior root if the sensory receptors are inferior to the spinal cord 
E) both anterior root and posterior root can receive visceral sensory information

Question 10

All of the following are true of polysynaptic reflexesexceptthat they

Accepted Answer

A) are arranged according to dermatomes. 
B) are intersegmental in distribution. 
C) involve reciprocal innervation. 
D) have reverberating circuits that prolong the reflexive motor response. 
E) involve pools of interneurons. 
A) are arranged according to dermatomes. 
B) are intersegmental in distribution. 
C) involve reciprocal innervation. 
D) have reverberating circuits that prolong the reflexive motor response. 
E) involve pools of interneurons.

Question 11

During the procedure known as a spinal tap,a needle is inserted into the ________ in the inferior ________ region.

Accepted Answer

A) epidural space; thoracic 
B) epidural space; lumbar 
C) epidural space; sacral 
D) subarachnoid space; thoracic 
E) subarachnoid space; lumbar 
A) epidural space; thoracic 
B) epidural space; lumbar 
C) epidural space; sacral 
D) subarachnoid space; thoracic 
E) subarachnoid space; lumbar

Question 12

Enlargements of the spinal cord occur

Accepted Answer

A) near the posterior median sulcus. 
B) adjacent to the anterior median fissure. 
C) in those spinal segments that control the limbs. 
D) in the thoracic region. 
E) in the sacral region. 
A) near the posterior median sulcus. 
B) adjacent to the anterior median fissure. 
C) in those spinal segments that control the limbs. 
D) in the thoracic region. 
E) in the sacral region.

Question 13

What is a reflex arc? What components must be present to qualify?

Accepted Answer

A reflex arc is the wiring pattern of ne

Question 14

Where does the simplest processing occur?

Accepted Answer

A) cerebrum 
B) cerebellum 
C) brainstem 
D) PNS and the spinal cord 
E) corpus callosum 
A) cerebrum 
B) cerebellum 
C) brainstem 
D) PNS and the spinal cord 
E) corpus callosum

Question 15

In the patellar reflex,identify the response observed and the effectors involved.

Accepted Answer

A) arm flexion and the effector is the biceps brachii 
B) arm extension and the effector is the triceps brachii 
C) leg flexion and the effectors are the hamstrings 
D) leg flexion and the effectors are the quadriceps femoris 
E) leg extension and the effectors are the quadriceps femoris 
A) arm flexion and the effector is the biceps brachii 
B) arm extension and the effector is the triceps brachii 
C) leg flexion and the effectors are the hamstrings 
D) leg flexion and the effectors are the quadriceps femoris 
E) leg extension and the effectors are the quadriceps femoris

Question 16

Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord.As a result,which of the following would you expect?

Accepted Answer

A) loss of sensation in his torso 
B) inability to breathe 
C) problems with moving his arms 
D) uncontrollable sweating of his feet 
E) problems with moving his legs 
A) loss of sensation in his torso 
B) inability to breathe 
C) problems with moving his arms 
D) uncontrollable sweating of his feet 
E) problems with moving his legs

Question 17

What is a reflex?

Accepted Answer

A) A reflex is a slow,calculated action triggered by a single exposure to specific stimuli. 
B) A reflex is a slow,calculated action triggered by repeated exposure to specific stimuli. 
C) A reflex is a slow,calculated action involving input from the brain triggered by specific stimuli. 
D) A reflex is when sensory inputs are sent quickly to the brain for analysis before any response occurs. 
E) A reflex is a rapid,automatic response triggered by specific stimuli. 
A) A reflex is a slow,calculated action triggered by a single exposure to specific stimuli. 
B) A reflex is a slow,calculated action triggered by repeated exposure to specific stimuli. 
C) A reflex is a slow,calculated action involving input from the brain triggered by specific stimuli. 
D) A reflex is when sensory inputs are sent quickly to the brain for analysis before any response occurs. 
E) A reflex is a rapid,automatic response triggered by specific stimuli.

Question 18

Name the structures and spinal coverings that are penetrated during a lumbar puncture procedure.

Accepted Answer

A) epidermis,dermis,skeletal muscle,subarachnoid space,arachnoid mater,dura mater,pia mater,subdural space 
B) dermis,epidermis,skeletal muscle,pia mater,arachnoid mater,dura mater,subdural space 
C) dermis,epidermis,skeletal muscle,dura mater,pia mater,arachnoid mater,subdural space 
D) epidermis,dermis,skeletal muscle,dura mater,arachnoid mater,subarachnoid space 
E) epidermis,dermis,skeletal muscle,pia mater,arachnoid mater,subarachnoid space 
A) epidermis,dermis,skeletal muscle,subarachnoid space,arachnoid mater,dura mater,pia mater,subdural space 
B) dermis,epidermis,skeletal muscle,pia mater,arachnoid mater,dura mater,subdural space 
C) dermis,epidermis,skeletal muscle,dura mater,pia mater,arachnoid mater,subdural space 
D) epidermis,dermis,skeletal muscle,dura mater,arachnoid mater,subarachnoid space 
E) epidermis,dermis,skeletal muscle,pia mater,arachnoid mater,subarachnoid space

Question 19

Nerve tracts or fasciculi make up the

Accepted Answer

A) central canal. 
B) posterior gray horns. 
C) gray commissures. 
D) anterior white columns. 
E) all of the above. 
A) central canal. 
B) posterior gray horns. 
C) gray commissures. 
D) anterior white columns. 
E) all of the above.

Question 20

List the major nerves of the sacral plexus.

Accepted Answer

A) iliohypogastric,ilio-inguinal,and genitofemoral nerves 
B) lateral femoral cutaneous,femoral,and obturator nerves 
C) superior and inferior gluteal,posterior femoral cutaneous,sciatic,and pudendal nerves 
D) tibial,femoral,sural,saphenous,and fibular nerves 
E) long thoracic,thoracodorsal,saphenous,genitofemoral,and obturator nerves 
A) iliohypogastric,ilio-inguinal,and genitofemoral nerves 
B) lateral femoral cutaneous,femoral,and obturator nerves 
C) superior and inferior gluteal,posterior femoral cutaneous,sciatic,and pudendal nerves 
D) tibial,femoral,sural,saphenous,and fibular nerves 
E) long thoracic,thoracodorsal,saphenous,genitofemoral,and obturator nerves

Exam 12: The Spinal Cord, spinal Nerves, and Spinal Reflexes

Which of the following describes the posterior root ganglion?

Differentiate between sensory nuclei and motor nuclei.

Describe the composition of the gray matter of the spinal cord.

Figure 12-1 -What is the function of the structure labeled "12"?

Which ramus carries sensory information from the limbs?

Cerebrospinal fluid flows within the

Which spinal nerves are not part of a nerve plexus?

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the

Through which root of a spinal nerve does visceral sensory information arrive?

All of the following are true of polysynaptic reflexesexceptthat they

During the procedure known as a spinal tap,a needle is inserted into the ________ in the inferior ________ region.

Enlargements of the spinal cord occur

What is a reflex arc? What components must be present to qualify?

Where does the simplest processing occur?

In the patellar reflex,identify the response observed and the effectors involved.

Bill contracts a viral disease that destroys cells in the posterior gray horns in his spinal cord.As a result,which of the following would you expect?

What is a reflex?

Name the structures and spinal coverings that are penetrated during a lumbar puncture procedure.

Nerve tracts or fasciculi make up the

List the major nerves of the sacral plexus.

An Introduction to Anatomy and Physiology

Chemical Level of Organization

Cellular Level of Organization

Tissue Level of Organization

The Integumentary System

Bones and Bone Structure

The Skeleton

Joints

Skeletal Muscle Tissue

The Muscular System

Nervous Tissue

The Brain, cranial Nerves, and Sensory and Motor Pathways

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Heart and Cardiovascular Function

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism, nutrition, and Energetics

The Urinary System

Fluid,electrolyte,and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters

During the procedure known as a spinal tap,a needle is inserted into the in the inferior region.