Question 1

A muscle at rest exerts no tension.Is this statement 
 Explain your answer.

Accepted Answer

Normal muscles maintain a resting tension known as muscle tone.

Question 2

A ________ reflex has at least one interneuron placed between the sensory and motor neuron.

Accepted Answer

The answer of A ________ reflex has at least one...

Question 3

After stretching an intrafusal fiber,the next event is

Accepted Answer

Stretching of an intrafusal fiber leads to the opening of mechanically gated ion channels, which depolarizes the sensory endings on the spindle. This depolarization generates action potentials along the associated sensory neuron. Therefore, an increase in action potentials is the immediate next event after stretching an intrafusal fiber.

Question 4

How does the stretch reflex protect a muscle?

Accepted Answer

The answer of How does the stretch reflex protect a...

Question 5

________ allows the body to anticipate a stimulus and begin the response,whereas negative feedback results in the ________ of a response.

Accepted Answer

The answer of ________ allows the body to anticipate a...

Question 6

List three ways that neural reflex pathways can be classified.Name one of the reflexes in each category.What additional information may be gained from the name of the reflex? Name a specific reflex and identify its classification in all of the categories you listed.

Accepted Answer

The answer of List three ways that neural reflex pathways...

Question 7

Ten-year-old Tina falls while climbing a tree and lands on her back.Her frightened parents take her to the local emergency room where she is examined.Her knee jerk reflex is normal and she exhibits a negative Babinski reflex.These results suggest that

Accepted Answer

The knee jerk reflex and Babinski reflex are both tests of spinal cord function. A normal knee jerk reflex and negative Babinski reflex suggest that Tina's spinal cord is functioning properly, and she likely did not suffer any damage to her spinal cord.

Question 8

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

Accepted Answer

The answer of In a ________ reflex,a sensory neuron synapses...

Question 9

You are studying for your physiology test with your lab partner.She insists that the purpose of the knee jerk reflex is to test for neural or muscular damage.State whether or not you agree with her,and why.

Accepted Answer

The answer of You are studying for your physiology test...

Question 10

Muscle spindles are ________ receptors and cause reflex ________,whereas Golgi tendon organs respond primarily to ________ and cause a ________ reflex.

Accepted Answer

The answer of Muscle spindles are ________ receptors and cause...

Question 11

What are the three levels of nervous system that control movement? Briefly describe their roles.

Accepted Answer

The answer of What are the three levels of nervous...

Question 12

List and describe the three categories of movement.Explain why these categories are NOT always distinct.

Accepted Answer

The answer of List and describe the three categories of...

Question 13

The control of voluntary movement can be divided into what three steps?

Accepted Answer

The answer of The control of voluntary movement can be...

Question 14

The ________ is essentially a group of interneurons that run from the motor cortex to the spinal cord.

Accepted Answer

The answer of The ________ is essentially a group of...

Question 15

Are relaxation of a muscle and inhibition of a muscle the same thing? Explain your answer.

Accepted Answer

The answer of Are relaxation of a muscle and inhibition...

Question 16

Make a map of the following terms: alpha motor neurons,CNS,contractile fibers,extrafusual muscle fibers,Golgi tendon organs,integrating center,joint receptors,muscle spindles,proprioreceptors,sensory neurons,sensory receptors and somatic motor neurons.

Accepted Answer

The answer of Make a map of the following terms:...

Question 17

When there is a resistance to the movement produced by a given limb muscle,

Accepted Answer

When there is resistance to movement, the body compensates by increasing muscle tone and recruiting more motor units to overcome the resistance, thus enhancing the force generated by the muscle. This is a fundamental principle of how muscles respond to increased demands, ensuring that sufficient force is produced to move against the resistance.

Question 18

Most reflexes are regulated by ________.

Accepted Answer

The answer of Most reflexes are regulated by ________....

Question 19

Explain alpha-gamma coactivation.

Accepted Answer

The answer of Explain alpha-gamma coactivation....

Question 20

The collection of pathways controlling a single joint is known as ________.The simplest reflex in this collection of pathways is the ________,which involves only two neurons: ________ neuron from the ________ and the ________ neuron to the muscle.

Accepted Answer

The answer of The collection of pathways controlling a single...

Quiz 13: Integrative Physiology I: Control of Body Movement

A muscle at rest exerts no tension.Is this statement Explain your answer.