Question 1

Muscle spindles provide the CNS with information about muscle

Accepted Answer

A)  fatigue. 
B)  length. 
C)  tension. 
D)  color. 
E)  location. 
A)  fatigue. 
B)  length. 
C)  tension. 
D)  color. 
E)  location.

Question 2

About how many motor neurons are there in the typical motor unit?

Accepted Answer

A)  4 
B)  1 
C)  100 
D)  1,000 
E)  150 
A)  4 
B)  1 
C)  100 
D)  1,000 
E)  150

Question 3

__________ is the ability to recognize objects by touch.

Accepted Answer

The answer of __________ is the ability to recognize objects...

Question 4

Which of the following helps distribute the work between different motor neurons of a muscle's motor pool?

Accepted Answer

A)  cocontraction 
B)  recurrent collateral inhibition 
C)  reciprocal inhibition 
D)  muscle-spindle feedback 
E)  withdrawal reflex 
A)  cocontraction 
B)  recurrent collateral inhibition 
C)  reciprocal inhibition 
D)  muscle-spindle feedback 
E)  withdrawal reflex

Question 5

__________ inhibition is mediated by Renshaw cells and helps distribute the work among the motor neurons of a muscle's motor pool.

Accepted Answer

Recurrent

Question 6

The only movements that are not greatly influenced by sensory feedback are __________ movements.

Accepted Answer

The answer of The only movements that are not greatly...

Question 7

The tension of a muscle can be increased by increasing

Accepted Answer

A)  the number of active neurons in its motor pool. 
B)  the level of activity of neurons in its motor pool. 
C)  the number of active neurons in its motor unit. 
D)  all of the above 
E)  both A and B 
A)  the number of active neurons in its motor pool. 
B)  the level of activity of neurons in its motor pool. 
C)  the number of active neurons in its motor unit. 
D)  all of the above 
E)  both A and B

Question 8

In contrast to the axons of the descending dorsolateral motor pathways, individual axons of the ventromedial pathways often terminate

Accepted Answer

A)  directly on motor neurons. 
B)  in two or more segments. 
C)  on both sides of the spinal cord. 
D)  both A and B 
E)  both B and C 
A)  directly on motor neurons. 
B)  in two or more segments. 
C)  on both sides of the spinal cord. 
D)  both A and B 
E)  both B and C

Question 9

Monkeys had difficulty letting go of food after their

Accepted Answer

A)  dorsolateral corticorubrospinal tracts were transected. 
B)  dorsolateral corticospinal tracts were transected. 
C)  ventromedial corticospinal tracts were transected. 
D)  cerebellum was lesioned. 
E)  basal ganglia were lesioned. 
A)  dorsolateral corticorubrospinal tracts were transected. 
B)  dorsolateral corticospinal tracts were transected. 
C)  ventromedial corticospinal tracts were transected. 
D)  cerebellum was lesioned. 
E)  basal ganglia were lesioned.

Question 10

The dorsolateral prefrontal association cortex

Accepted Answer

A)  is important in the initiation of complex voluntary movements. 
B)  sends projections to the primary and secondary motor cortices. 
C)  plays a critical role in the elicitation of reflexes. 
D)  both A and B 
E)  both B and C 
A)  is important in the initiation of complex voluntary movements. 
B)  sends projections to the primary and secondary motor cortices. 
C)  plays a critical role in the elicitation of reflexes. 
D)  both A and B 
E)  both B and C

Question 11

-The muscle illustrated here is

Accepted Answer

A)  an intrafusal muscle. 
B)  an extrafusal muscle. 
C)  a skeletal muscle. 
D)  both A and C 
E)  Both B and C 
A)  an intrafusal muscle. 
B)  an extrafusal muscle. 
C)  a skeletal muscle. 
D)  both A and C 
E)  Both B and C

Question 12

The somatotopic map of the primary motor cortex is called the motor __________.

Accepted Answer

The answer of The somatotopic map of the primary motor...

Question 13

The cell bodies of Betz cells are found in the

Accepted Answer

A)  premotor cortex. 
B)  primary motor cortex. 
C)  supplementary motor cortex. 
D)  cerebellum. 
E)  basal ganglia. 
A)  premotor cortex. 
B)  primary motor cortex. 
C)  supplementary motor cortex. 
D)  cerebellum. 
E)  basal ganglia.

Question 14

Which structure is thought to be involved in the integration of the sensory information that is the basis for initiating a movement?

Accepted Answer

A)  posterior parietal cortex 
B)  primary somatosensory cortex 
C)  primary auditory cortex 
D)  frontal cortex 
E)  primary visual cortex 
A)  posterior parietal cortex 
B)  primary somatosensory cortex 
C)  primary auditory cortex 
D)  frontal cortex 
E)  primary visual cortex

Question 15

-The descending pathway illustrated here is the

Accepted Answer

A)  dorsolateral corticorubrospinal tract. 
B)  dorsolateral corticospinal tract. 
C)  ventromedial corticospinal tract. 
D)  ventromedial cortico-brainstem-spinal tract. 
E)  none of the above 
A)  dorsolateral corticorubrospinal tract. 
B)  dorsolateral corticospinal tract. 
C)  ventromedial corticospinal tract. 
D)  ventromedial cortico-brainstem-spinal tract. 
E)  none of the above

Question 16

The somatotopic map of the primary motor cortex is called the

Accepted Answer

A)  motor homunculus. 
B)  somatosensory homunculus. 
C)  stereognosis. 
D)  somatotopic homunculus. 
E)  supplementary map. 
A)  motor homunculus. 
B)  somatosensory homunculus. 
C)  stereognosis. 
D)  somatotopic homunculus. 
E)  supplementary map.

Question 17

Most axons of the dorsolateral corticorubrospinal tract synapse on

Accepted Answer

A)  muscles of the fingers and thumb. 
B)  muscles of the hands and wrists. 
C)  interneurons of the spinal gray matter that in turn synapse on motor neurons that project to the distal muscles of the arms and legs. 
D)  motor neurons that project to the hands. 
E)  Betz cells. 
A)  muscles of the fingers and thumb. 
B)  muscles of the hands and wrists. 
C)  interneurons of the spinal gray matter that in turn synapse on motor neurons that project to the distal muscles of the arms and legs. 
D)  motor neurons that project to the hands. 
E)  Betz cells.

Question 18

The decussation in the medullary pyramids is part of the

Accepted Answer

A)  dorsolateral corticospinal tract. 
B)  dorsolateral corticorubrospinal tract. 
C)  ventromedial corticospinal tract. 
D)  ventromedial cortico-brainstem-spinal tract. 
E)  both C and D 
A)  dorsolateral corticospinal tract. 
B)  dorsolateral corticorubrospinal tract. 
C)  ventromedial corticospinal tract. 
D)  ventromedial cortico-brainstem-spinal tract. 
E)  both C and D

Question 19

Recurrent collateral inhibition is mediated by

Accepted Answer

A)  cocontraction. 
B)  Renshaw cells. 
C)  Golgi organs. 
D)  muscle spindles. 
E)  reciprocal innervation. 
A)  cocontraction. 
B)  Renshaw cells. 
C)  Golgi organs. 
D)  muscle spindles. 
E)  reciprocal innervation.

Question 20

The only parts of each motor homunculus to receive somatosensory feedback directly from skin are the

Accepted Answer

A)  genital areas. 
B)  lip areas. 
C)  hand areas. 
D)  foot areas. 
E)  face areas. 
A)  genital areas. 
B)  lip areas. 
C)  hand areas. 
D)  foot areas. 
E)  face areas.

Muscle spindles provide the CNS with information about muscle

About how many motor neurons are there in the typical motor unit?

__________ is the ability to recognize objects by touch.

Which of the following helps distribute the work between different motor neurons of a muscle's motor pool?

__________ inhibition is mediated by Renshaw cells and helps distribute the work among the motor neurons of a muscle's motor pool.

The only movements that are not greatly influenced by sensory feedback are __________ movements.

The tension of a muscle can be increased by increasing

In contrast to the axons of the descending dorsolateral motor pathways, individual axons of the ventromedial pathways often terminate

Monkeys had difficulty letting go of food after their

The dorsolateral prefrontal association cortex

-The muscle illustrated here is

The somatotopic map of the primary motor cortex is called the motor __________.

The cell bodies of Betz cells are found in the

Which structure is thought to be involved in the integration of the sensory information that is the basis for initiating a movement?

-The descending pathway illustrated here is the

The somatotopic map of the primary motor cortex is called the

Most axons of the dorsolateral corticorubrospinal tract synapse on

The decussation in the medullary pyramids is part of the

Recurrent collateral inhibition is mediated by

The only parts of each motor homunculus to receive somatosensory feedback directly from skin are the

Biopsychology As a Neuroscience

Evolution, Genetics, and Experience

The Anatomy of the Nervous System

Neural Conduction and Synaptic Transmission

The Research Methods of Biopsychology

The Visual System

Mechanisms of Perception

Development of the Nervous System

Brain Damage and Neuroplasticity

Learning, Memory, and Amnesia

Hunger, Eating, and Health

Hormones and Sex

Sleep, Dreaming, and Circadian Rhythms

Drug Addiction and the Brains Reward Circuits

Lateralization, Language, and the Split Brain

Biopsychology of Emotion, Stress, and Health

Biopsychology of Psychiatric Disorders

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Exam 8: The Sensorimotor System

Muscle spindles provide the CNS with information about muscle

About how many motor neurons are there in the typical motor unit?

__________ is the ability to recognize objects by touch.

Which of the following helps distribute the work between different motor neurons of a muscle's motor pool?

__________ inhibition is mediated by Renshaw cells and helps distribute the work among the motor neurons of a muscle's motor pool.

The only movements that are not greatly influenced by sensory feedback are __________ movements.

The tension of a muscle can be increased by increasing

In contrast to the axons of the descending dorsolateral motor pathways, individual axons of the ventromedial pathways often terminate

Monkeys had difficulty letting go of food after their

The dorsolateral prefrontal association cortex

-The muscle illustrated here is

The somatotopic map of the primary motor cortex is called the motor __________.

The cell bodies of Betz cells are found in the

Which structure is thought to be involved in the integration of the sensory information that is the basis for initiating a movement?

-The descending pathway illustrated here is the

The somatotopic map of the primary motor cortex is called the

Most axons of the dorsolateral corticorubrospinal tract synapse on

The decussation in the medullary pyramids is part of the

Recurrent collateral inhibition is mediated by

The only parts of each motor homunculus to receive somatosensory feedback directly from skin are the

Biopsychology As a Neuroscience

Evolution, Genetics, and Experience

The Anatomy of the Nervous System

Neural Conduction and Synaptic Transmission

The Research Methods of Biopsychology

The Visual System

Mechanisms of Perception

Development of the Nervous System

Brain Damage and Neuroplasticity

Learning, Memory, and Amnesia

Hunger, Eating, and Health

Hormones and Sex

Sleep, Dreaming, and Circadian Rhythms

Drug Addiction and the Brains Reward Circuits

Lateralization, Language, and the Split Brain

Biopsychology of Emotion, Stress, and Health

Biopsychology of Psychiatric Disorders

Filters