Question 1

Apraxia is characterized by

Accepted Answer

A)  motor paralysis. 
B)  an impairment in learning a new motor skill. 
C)  muscle weakness. 
D)  the inability to properly carry out a learned, skilled movement. 
E)  an impairment in motor coordination. 
A)  motor paralysis. 
B)  an impairment in learning a new motor skill. 
C)  muscle weakness. 
D)  the inability to properly carry out a learned, skilled movement. 
E)  an impairment in motor coordination.

Question 2

The firing rate of the ________ determines the strength of contraction of a muscle.

Accepted Answer

A)  intrafusal muscle fibers 
B)  Golgi tendon organs 
C)  afferent fibers 
D)  gamma motor neurons 
E)  alpha motor neurons 
A)  intrafusal muscle fibers 
B)  Golgi tendon organs 
C)  afferent fibers 
D)  gamma motor neurons 
E)  alpha motor neurons

Question 3

A ________ consists of the extrafusal fibers innervated by a single alpha motor neuron.

Accepted Answer

A)  myofibril tangle 
B)  motor unit 
C)  extrafusal junction 
D)  intrafusal contact 
E)  muscle spindle 
A)  myofibril tangle 
B)  motor unit 
C)  extrafusal junction 
D)  intrafusal contact 
E)  muscle spindle

Question 4

Contrast the symptoms and etiology of Huntington's disease with that of Parkinson's disease.

Accepted Answer

Huntington's disease (HD) is caused by d

Question 5

Damage involving the ________ tract would be expected to impair your ability to grasp and manipulate objects with your fingers.

Accepted Answer

A)  lateral corticospinal 
B)  vestibulospinal 
C)  tectospinal 
D)  reticulospinal 
E)  premotor-striatal 
A)  lateral corticospinal 
B)  vestibulospinal 
C)  tectospinal 
D)  reticulospinal 
E)  premotor-striatal

Question 6

The ________ controls movements of the tongue, face, and some eye muscles.

Accepted Answer

A)  lateral corticospinal tract 
B)  ventral corticospinal tract 
C)  spinothalamic tract 
D)  rubrospinal tract 
E)  corticobulbar tract 
A)  lateral corticospinal tract 
B)  ventral corticospinal tract 
C)  spinothalamic tract 
D)  rubrospinal tract 
E)  corticobulbar tract

Question 7

Parkinson's disease is characterized by

Accepted Answer

A)  impaired ability to follow a map. 
B)  sudden involuntary movements. 
C)  slowness of movement. 
D)  an inability to perform a sequence of movements. 
E)  a gene mutation on chromosome 4. 
A)  impaired ability to follow a map. 
B)  sudden involuntary movements. 
C)  slowness of movement. 
D)  an inability to perform a sequence of movements. 
E)  a gene mutation on chromosome 4.

Question 8

Describe and give an example of (a) flexion and (b) extension of a limb produced by muscles.

Accepted Answer

Contraction of a flexor muscle produces

Question 9

The ________ controls the muscles of the limbs and fingers.

Accepted Answer

A)  lateral corticospinal tract 
B)  ventral corticospinal tract 
C)  spinothalamic tract 
D)  rubrospinal tract 
E)  corticobulbar pathway 
A)  lateral corticospinal tract 
B)  ventral corticospinal tract 
C)  spinothalamic tract 
D)  rubrospinal tract 
E)  corticobulbar pathway

Question 10

Diagram the elements that comprise skeletal muscle. Indicate the location and function of (a) extrafusal muscle fibers, (b) alpha motor neurons, (c) the muscle spindle, (d) intrafusal muscle fibers, and (e) the gamma motor neuron.

Accepted Answer

The primary motor cortex lies just befor

Question 11

An alpha motor neuron, its axon, and associated extrafusal fibers comprise the motor ________.

Accepted Answer

The answer of An alpha motor neuron, its axon, and...

Question 12

Name and describe the three motor tracts that comprise the lateral group of descending fibers and explain their relative functions in motor control.

Accepted Answer

Motor neurons arising from the primary m

Question 13

Muscle tension is sensed by ________, whereas muscle fiber length is sensed by ________.

Accepted Answer

A)  extrafusal fibers; Golgi tendon organs 
B)  intrafusal fibers; extrafusal fibers 
C)  Golgi tendon organs; intrafusal fibers 
D)  motor neurons; intrafusal fibers 
E)  multiunit fibers; myofibrils 
A)  extrafusal fibers; Golgi tendon organs 
B)  intrafusal fibers; extrafusal fibers 
C)  Golgi tendon organs; intrafusal fibers 
D)  motor neurons; intrafusal fibers 
E)  multiunit fibers; myofibrils

Question 14

_____________________ contain receptors that code for stretch.

Accepted Answer

A)  Extrafusal fibers and Golgi tendons 
B)  Golgi tendon organs 
C)  Intrafusal fibers and extrafusal fibers 
D)  Intrafusal fibers and Golgi tendons 
E)  Extrafusal fibers 
A)  Extrafusal fibers and Golgi tendons 
B)  Golgi tendon organs 
C)  Intrafusal fibers and extrafusal fibers 
D)  Intrafusal fibers and Golgi tendons 
E)  Extrafusal fibers

Question 15

Which of the following is a key characteristic of Parkinson's disease?

Accepted Answer

A)  ballistic movements of the limbs 
B)  difficulty in sitting in a chair 
C)  tremor during rapid motor movements 
D)  slowness of movement 
E)  excessive movement of the tongue and lips 
A)  ballistic movements of the limbs 
B)  difficulty in sitting in a chair 
C)  tremor during rapid motor movements 
D)  slowness of movement 
E)  excessive movement of the tongue and lips

Question 16

Electrical stimulation of the mesencephalic region located ventral to the inferior colliculus in the cat will

Accepted Answer

A)  awaken a sleeping cat. 
B)  alter the sitting posture of a cat. 
C)  reinforce behaviors that produce this stimulation. 
D)  directly excite spinal cord motor neurons in the cat. 
E)  induce a cat to make pacing movements. 
A)  awaken a sleeping cat. 
B)  alter the sitting posture of a cat. 
C)  reinforce behaviors that produce this stimulation. 
D)  directly excite spinal cord motor neurons in the cat. 
E)  induce a cat to make pacing movements.

Question 17

The ____________ are responsible for the decision to move.

Accepted Answer

A)  posterior parietal cortex and frontopolar cortex 
B)  pre-SMA and posterior parietal cortex 
C)  posterior SMA and posterior parietal cortex 
D)  pre-SMA and frontopolar cortex 
E)  frontopolar cortex and posterior SMA 
A)  posterior parietal cortex and frontopolar cortex 
B)  pre-SMA and posterior parietal cortex 
C)  posterior SMA and posterior parietal cortex 
D)  pre-SMA and frontopolar cortex 
E)  frontopolar cortex and posterior SMA

Question 18

Contrast the control of reaching and grasping.

Accepted Answer

For reaching behavior, the parietal reac

Question 19

Myosin cross bridges attach to actin strands, bend, detach, and then attach lower. These actions result in the __________ of the muscle fibers.

Accepted Answer

A)  shortening 
B)  lengthening 
C)  activating 
D)  elongating 
E)  stretching 
A)  shortening 
B)  lengthening 
C)  activating 
D)  elongating 
E)  stretching

Question 20

The anterior intraparietal sulcus is important for our ability to

Accepted Answer

A)  reach for a small object. 
B)  grasp an object. 
C)  locate a familiar sound. 
D)  recognize an object. 
E)  judge the texture of an object. 
A)  reach for a small object. 
B)  grasp an object. 
C)  locate a familiar sound. 
D)  recognize an object. 
E)  judge the texture of an object.

Apraxia is characterized by

The firing rate of the ________ determines the strength of contraction of a muscle.

A ________ consists of the extrafusal fibers innervated by a single alpha motor neuron.

Contrast the symptoms and etiology of Huntington's disease with that of Parkinson's disease.

Damage involving the ________ tract would be expected to impair your ability to grasp and manipulate objects with your fingers.

The ________ controls movements of the tongue, face, and some eye muscles.

Parkinson's disease is characterized by

Describe and give an example of (a) flexion and (b) extension of a limb produced by muscles.

The ________ controls the muscles of the limbs and fingers.

Diagram the elements that comprise skeletal muscle. Indicate the location and function of (a) extrafusal muscle fibers, (b) alpha motor neurons, (c) the muscle spindle, (d) intrafusal muscle fibers, and (e) the gamma motor neuron.

An alpha motor neuron, its axon, and associated extrafusal fibers comprise the motor ________.

Name and describe the three motor tracts that comprise the lateral group of descending fibers and explain their relative functions in motor control.

Muscle tension is sensed by , whereas muscle fiber length is sensed by .

_____________________ contain receptors that code for stretch.

Which of the following is a key characteristic of Parkinson's disease?

Electrical stimulation of the mesencephalic region located ventral to the inferior colliculus in the cat will

The ____________ are responsible for the decision to move.

Contrast the control of reaching and grasping.

Myosin cross bridges attach to actin strands, bend, detach, and then attach lower. These actions result in the __________ of the muscle fibers.

The anterior intraparietal sulcus is important for our ability to

Introduction

Structure and Function of Cells of the Nervous System

Structure of the Nervous System

Psychopharmacology

Methods and Strategies of Research

Vision

Audition, the Body Senses, and the Chemical Senses

Sleep and Biological Rhythms

Reproductive Behavior

Emotion

Ingestive Behavior

Learning and Memory

Human Communication

Neurological Disorders

Schizophrenia and the Affective Disorders

Anxiety Disorders, Autistic Disorder, attention-Deficithyperactivity Disorder, and Stress Disorders

Substance Abuse

Filters

Exam 8: Control of Movement

Apraxia is characterized by

The firing rate of the ________ determines the strength of contraction of a muscle.

A ________ consists of the extrafusal fibers innervated by a single alpha motor neuron.

Contrast the symptoms and etiology of Huntington's disease with that of Parkinson's disease.

Damage involving the ________ tract would be expected to impair your ability to grasp and manipulate objects with your fingers.

The ________ controls movements of the tongue, face, and some eye muscles.

Parkinson's disease is characterized by

Describe and give an example of (a) flexion and (b) extension of a limb produced by muscles.

The ________ controls the muscles of the limbs and fingers.

Diagram the elements that comprise skeletal muscle. Indicate the location and function of (a) extrafusal muscle fibers, (b) alpha motor neurons, (c) the muscle spindle, (d) intrafusal muscle fibers, and (e) the gamma motor neuron.

An alpha motor neuron, its axon, and associated extrafusal fibers comprise the motor ________.

Name and describe the three motor tracts that comprise the lateral group of descending fibers and explain their relative functions in motor control.

Muscle tension is sensed by ________, whereas muscle fiber length is sensed by ________.

_____________________ contain receptors that code for stretch.

Which of the following is a key characteristic of Parkinson's disease?

Electrical stimulation of the mesencephalic region located ventral to the inferior colliculus in the cat will

The ____________ are responsible for the decision to move.

Contrast the control of reaching and grasping.

Myosin cross bridges attach to actin strands, bend, detach, and then attach lower. These actions result in the __________ of the muscle fibers.

The anterior intraparietal sulcus is important for our ability to

Introduction

Structure and Function of Cells of the Nervous System

Structure of the Nervous System

Psychopharmacology

Methods and Strategies of Research

Vision

Audition, the Body Senses, and the Chemical Senses

Sleep and Biological Rhythms

Reproductive Behavior

Emotion

Ingestive Behavior

Learning and Memory

Human Communication

Neurological Disorders

Schizophrenia and the Affective Disorders

Anxiety Disorders, Autistic Disorder, attention-Deficithyperactivity Disorder, and Stress Disorders

Substance Abuse

Filters

Muscle tension is sensed by , whereas muscle fiber length is sensed by .