Chapter 8

Question 1

Feedback to the CNS about the activity of skeletal muscles is provided by

Answer 1

muscle spindle receptors and Golgi tendon organs

Question 2

The somatotopic map of the primary motor cortex is called the

Answer 2

motor homunculus

Question 3

A single motor neuron, together with all of the individual muscle fibers that it controls is referred to as a

Answer 3

motor unit

Question 4

Theories of sensorimotor learning emphasize two kinds of learning-related changes in sensorimotor programs:

Answer 4

transferring the neural control of the learned sensorimotor response to higher levels of the CNS and increasing the conscious control of it

Question 5

Apraxia is usually caused by lesions to the

Answer 5

left parietal lobe

Question 6

Like the sensory systems, the sensorimotor system is

Answer 6

hierarchical, parallel, functionally segregated

Question 7

Many areas of the cortex are involved in executing a muscle movement. What area seems to be most important in initiating a voluntary movement?

Answer 7

dorsolateral prefrontal cortex

Question 8

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

Answer 8

posterior parietal cortex

Question 9

In general, research on the four descending motor pathways suggests that the two dorsolateral tracts are most involved in control of - while the two ventromedial tracts are more involved in the control of -

Answer 9

limb movements; control of posture and whole-body movements

Question 10

What is most important in coordinating and modulating the entire sensorimotor system as it produces voluntary movements?

Answer 10

basal ganglia and cerebellum

Question 11

A deficit in the ability to recognize objects by touch is called

Answer 11

astereognosia

Question 12

What helps distribute the work between different motor neurons of a muscle’s motor pool?

Answer 12

cocontraction

Question 13

The supplementary motor area and the premotor cortex are considered to be areas of the

Answer 13

secondary motor cortex

Question 14

Contralateral neglect is usually associated with lesions to the

Answer 14

right parietal lobe

Question 15

In general the various areas of secondary motor cortex are thought to

Answer 15

program specific motor sequences

Question 16

The primary motor cortex is located in both hemispheres in - of the - lobe

Answer 16

precentral; frontal