Question 1

Figure 12-1 The Spinal Cord
Use Figure 12-1 to answer the following questions:
-Identify the structure labeled "10."

Accepted Answer

A)  anterior white commissure 
B)  anterior median fissure 
C)  anterior white column 
D)  anterior gray commissure 
E)  anterior white horn 
A)  anterior white commissure 
B)  anterior median fissure 
C)  anterior white column 
D)  anterior gray commissure 
E)  anterior white horn

Question 2

The postganglionic fibers that connect an sympathetic ganglion and carry fibers that innervate glands and smooth muscle of the body wall or limbs are the

Accepted Answer

A)  white rami communicantes. 
B)  gray rami communicantes. 
C)  dorsal ramus. 
D)  ventral ramus. 
E)  dermatomes. 
A)  white rami communicantes. 
B)  gray rami communicantes. 
C)  dorsal ramus. 
D)  ventral ramus. 
E)  dermatomes.

Question 3

In a(n) ________ reflex, a sensory neuron synapses directly on a motor neuron.

Accepted Answer

The answer of In a(n) ________ reflex, a sensory neuron...

Question 4

The outward projections from the central gray matter of the spinal cord are called

Accepted Answer

A)  wings. 
B)  horns. 
C)  pyramids. 
D)  fibers. 
E)  tracts. 
A)  wings. 
B)  horns. 
C)  pyramids. 
D)  fibers. 
E)  tracts.

Question 5

Spinal nerves are

Accepted Answer

A)  purely sensory. 
B)  purely motor. 
C)  both sensory and motor. 
D)  interneuronal. 
E)  involuntary. 
A)  purely sensory. 
B)  purely motor. 
C)  both sensory and motor. 
D)  interneuronal. 
E)  involuntary.

Question 6

Blood vessels that supply the spinal cord branch within the

Accepted Answer

A)  spinal meninges. 
B)  spinal nerve. 
C)  white matter. 
D)  spinal columns. 
E)  gray matter. 
A)  spinal meninges. 
B)  spinal nerve. 
C)  white matter. 
D)  spinal columns. 
E)  gray matter.

Question 7

The condition in which a person loses all feeling and movement of the arms and legs due to spinal cord injury is termed ________.

Accepted Answer

The answer of The condition in which a person loses...

Question 8

The ________ is a strand of fibrous tissue that provides longitudinal support as a component of the coccygeal ligament.

Accepted Answer

A)  conus medullaris 
B)  filum terminale 
C)  cauda equina 
D)  dorsal root 
E)  ventral root 
A)  conus medullaris 
B)  filum terminale 
C)  cauda equina 
D)  dorsal root 
E)  ventral root

Question 9

All of the following are True of muscle spindles, except that they

Accepted Answer

A)  are found within skeletal muscle. 
B)  consist of specialized fibers called intrafusal fibers. 
C)  are found in tendons. 
D)  are the receptor for the stretch reflex. 
E)  are innervated by gamma motor neurons. 
A)  are found within skeletal muscle. 
B)  consist of specialized fibers called intrafusal fibers. 
C)  are found in tendons. 
D)  are the receptor for the stretch reflex. 
E)  are innervated by gamma motor neurons.

Question 10

The epidural space contains

Accepted Answer

A)  cerebrospinal fluid. 
B)  lymph. 
C)  blood. 
D)  connective tissue and blood vessels. 
E)  denticulate ligaments. 
A)  cerebrospinal fluid. 
B)  lymph. 
C)  blood. 
D)  connective tissue and blood vessels. 
E)  denticulate ligaments.

Question 11

The gray horns of the spinal cord contain mainly

Accepted Answer

A)  nerve tracts. 
B)  columns. 
C)  meninges. 
D)  nerve cell bodies. 
E)  funiculi. 
A)  nerve tracts. 
B)  columns. 
C)  meninges. 
D)  nerve cell bodies. 
E)  funiculi.

Question 12

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 13

Figure 12-2 Spinal Nerves
Use Figure 12-2 to answer the following questions:
-Identify the structure labeled "6."

Accepted Answer

A)  autonomic nerve 
B)  sympathetic ganglion 
C)  dorsal root ganglion 
D)  rami communicantes 
E)  ventral root 
A)  autonomic nerve 
B)  sympathetic ganglion 
C)  dorsal root ganglion 
D)  rami communicantes 
E)  ventral root

Question 14

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 15

The dorsal root of a spinal nerve contains

Accepted Answer

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

Question 16

A complex, interwoven network of nerves is called a(n) ________.

Accepted Answer

The answer of A complex, interwoven network of nerves is...

Question 17

The tough fibrous outermost covering of the spinal cord is the ________.

Accepted Answer

The answer of The tough fibrous outermost covering of the...

Question 18

Figure 12-2 Spinal Nerves
Use Figure 12-2 to answer the following questions:
-Identify the structure labeled "8."

Accepted Answer

A)  peripheral nerve 
B)  dorsal ramus 
C)  spinal nerve 
D)  ventral root 
E)  dorsal root 
A)  peripheral nerve 
B)  dorsal ramus 
C)  spinal nerve 
D)  ventral root 
E)  dorsal root

Question 19

A viral disease that destroys the cells of the anterior gray horn will

Accepted Answer

A)  lead to muscle weakness or paralysis. 
B)  interfere with position sense. 
C)  mainly interfere with crude touch and temperature sense. 
D)  block autonomic regulation. 
E)  all of the above 
A)  lead to muscle weakness or paralysis. 
B)  interfere with position sense. 
C)  mainly interfere with crude touch and temperature sense. 
D)  block autonomic regulation. 
E)  all of the above

Question 20

Sometimes, when it is difficult to initiate a knee-jerk reflex by tapping the patellar tendon, a patient will be asked to voluntarily make a fist. Then the reflex will be easily evoked. What does this illustrate about the relation between voluntary and involuntary reflex movement?

Accepted Answer

Descending motor tracts that excite the

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

Figure 12-1 The Spinal Cord Use Figure 12-1 to answer the following questions: -Identify the structure labeled "10."

The postganglionic fibers that connect an sympathetic ganglion and carry fibers that innervate glands and smooth muscle of the body wall or limbs are the

In a(n) ________ reflex, a sensory neuron synapses directly on a motor neuron.

The outward projections from the central gray matter of the spinal cord are called

Spinal nerves are

Blood vessels that supply the spinal cord branch within the

The condition in which a person loses all feeling and movement of the arms and legs due to spinal cord injury is termed ________.

The ________ is a strand of fibrous tissue that provides longitudinal support as a component of the coccygeal ligament.

All of the following are True of muscle spindles, except that they

The epidural space contains

The gray horns of the spinal cord contain mainly

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?

Figure 12-2 Spinal Nerves Use Figure 12-2 to answer the following questions: -Identify the structure labeled "6."

Nerve tracts or fasciculi make up the

The dorsal root of a spinal nerve contains

A complex, interwoven network of nerves is called a(n) ________.

The tough fibrous outermost covering of the spinal cord is the ________.

Figure 12-2 Spinal Nerves Use Figure 12-2 to answer the following questions: -Identify the structure labeled "8."

A viral disease that destroys the cells of the anterior gray horn will

Sometimes, when it is difficult to initiate a knee-jerk reflex by tapping the patellar tendon, a patient will be asked to voluntarily make a fist. Then the reflex will be easily evoked. What does this illustrate about the relation between voluntary and involuntary reflex movement?

An Introduction to Anatomy and Physiology

Chemical Level of Organization

Cellular Level of Organization

Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Skeleton

Articulations

Skeletal Muscle Tissue

The Muscular System

Neural Tissue

The Brain and Cranial Nerves

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood and Blood Vessels

The Heart and Cardiovascular Function

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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