Question 1

Which of the following associations is incorrect?

Accepted Answer

A) 8 cervical spinal nerves 
B) 11 thoracic spinal nerves 
C) 5 lumbar spinal nerves 
D) 5 sacral spinal nerves 
E) 1 coccygeal spinal nerve 
A) 8 cervical spinal nerves 
B) 11 thoracic spinal nerves 
C) 5 lumbar spinal nerves 
D) 5 sacral spinal nerves 
E) 1 coccygeal spinal nerve

Question 2

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 3

The ________ innervates the ventrolateral body surface,structures in the body wall,and the limbs.

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 4

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

A) paraplegia. 
B) hemiplegia. 
C) spinal shock. 
D) quadriplegia. 
E) spinal transection. 
A) paraplegia. 
B) hemiplegia. 
C) spinal shock. 
D) quadriplegia. 
E) spinal transection.

Question 5

The white matter of the spinal cord contains

Accepted Answer

A) bundles of axons with common origins,destinations,and functions. 
B) bundles of dendrites with common origins,destinations,and functions. 
C) sensory and motor nuclei. 
D) both axons and dendrites. 
E) interneurons. 
A) bundles of axons with common origins,destinations,and functions. 
B) bundles of dendrites with common origins,destinations,and functions. 
C) sensory and motor nuclei. 
D) both axons and dendrites. 
E) interneurons.

Question 6

Figure 13-1 The Spinal Cord
Use Figure 13-1 to answer the following questions:
-Identify the structure labeled "4."

Accepted Answer

A) posterior gray column 
B) dorsal gray ganglion 
C) posterior white column 
D) posterior gray horn 
E) anterior gray horn 
A) posterior gray column 
B) dorsal gray ganglion 
C) posterior white column 
D) posterior gray horn 
E) anterior gray horn

Question 7

During the procedure known as a(n)________,a needle is inserted into the subarachnoid space in the inferior lumbar region.

Accepted Answer

A) EEG 
B) encephalomyelogram 
C) laminectomy 
D) lumbar puncture 
E) thoracic tap 
A) EEG 
B) encephalomyelogram 
C) laminectomy 
D) lumbar puncture 
E) thoracic tap

Question 8

The dorsal root contains ________ neurons.

Accepted Answer

A) sensory 
B) motor 
C) interneurons 
D) efferent 
E) unipolar 
A) sensory 
B) motor 
C) interneurons 
D) efferent 
E) unipolar

Question 9

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 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 moving his legs

Question 10

A complex,interwoven network of nerves is called a

Accepted Answer

A) dermatome. 
B) ramus. 
C) plexus. 
D) ganglion. 
E) tracts. 
A) dermatome. 
B) ramus. 
C) plexus. 
D) ganglion. 
E) tracts.

Question 11

The outward projections from the central gray matter of the spinal cord,seen easily in microscopic spinal cord cross sections,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 12

The neural "wiring" of a single reflex is called a(n)

Accepted Answer

A) reflex arc. 
B) ramus. 
C) ganglion. 
D) tract. 
E) intershoot. 
A) reflex arc. 
B) ramus. 
C) ganglion. 
D) tract. 
E) intershoot.

Question 13

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

Question 14

The gray horns of the spinal cord contain mainly

Accepted Answer

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

Question 15

The ventral 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

The ________ is a strand of fibrous tissue that provides longitudinal support to the spinal cord 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 17

Spinal interneurons inhibit antagonist motor neurons in a process called

Accepted Answer

A) a crossed extensor reflex. 
B) a stretch reflex. 
C) a tendon reflex. 
D) reciprocal inhibition. 
E) reverberating circuits. 
A) a crossed extensor reflex. 
B) a stretch reflex. 
C) a tendon reflex. 
D) reciprocal inhibition. 
E) reverberating circuits.

Question 18

The nerve crucial for breathing that originates within the cervical plexus is called the ________ nerve.

Accepted Answer

A) brachial 
B) phrenic 
C) intercostal 
D) ganglion 
E) sciatic 
A) brachial 
B) phrenic 
C) intercostal 
D) ganglion 
E) sciatic

Question 19

The ________ reflex complements the flexor reflex by activating contralateral muscles.

Accepted Answer

A) stretch 
B) tendon 
C) flexor 
D) crossed extensor 
E) reciprocal 
A) stretch 
B) tendon 
C) flexor 
D) crossed extensor 
E) reciprocal

Question 20

Which of the following is not true about a positive Babinski reflex?

Accepted Answer

A) normal in newborns 
B) abnormal in adults 
C) a sign of injury to descending spinal tracts 
D) why you close your eyes when you sneeze 
E) flaring of the toes when the sole is stroked 
A) normal in newborns 
B) abnormal in adults 
C) a sign of injury to descending spinal tracts 
D) why you close your eyes when you sneeze 
E) flaring of the toes when the sole is stroked

Exam 13: The Spinal Cord, spinal Nerves, and Spinal Reflexes

Which of the following associations is incorrect?

All of the following are true of muscle spindles except that they

The ________ innervates the ventrolateral body surface,structures in the body wall,and the limbs.

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

The white matter of the spinal cord contains

Figure 13-1 The Spinal Cord Use Figure 13-1 to answer the following questions: -Identify the structure labeled "4."

During the procedure known as a(n)________,a needle is inserted into the subarachnoid space in the inferior lumbar region.

The dorsal root contains ________ neurons.

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?

A complex,interwoven network of nerves is called a

The outward projections from the central gray matter of the spinal cord,seen easily in microscopic spinal cord cross sections,are called

The neural "wiring" of a single reflex is called a(n)

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?

The gray horns of the spinal cord contain mainly

The ventral root of a spinal nerve contains

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

Spinal interneurons inhibit antagonist motor neurons in a process called

The nerve crucial for breathing that originates within the cervical plexus is called the ________ nerve.

The ________ reflex complements the flexor reflex by activating contralateral muscles.

Which of the following is not true about a positive Babinski reflex?

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

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

Filters