Question 1

Match the type of reflex to its description.
-reflexes that one is born with; genetically determined

Accepted Answer

A) somatic 
B) autonomic 
C) spinal 
D) cranial 
E) innate
F)acquired
G)polysynaptic

Question 2

Match the structure to its description.
-have afferent neurons that bring information to the CNS

Accepted Answer

A) muscle spindles 
B) Golgi tendon organs 
C) both

Question 3

Match the type of reflex to its description.
-several neurons involved in a pathway; can be complex

Accepted Answer

A) somatic 
B) autonomic 
C) spinal 
D) cranial 
E) innate
F)acquired
G)polysynaptic

Question 4

Match the structure to its description.
-eventually synapses with alpha motor neurons that innervate extrafusal muscle fibers

Accepted Answer

A) muscle spindles 
B) Golgi tendon organs 
C) both

Question 5

The motor neurons associated with intrafusal muscle fibers are referred to as ________ motor neurons.

Accepted Answer

The answer of The motor neurons associated with intrafusal muscle...

Question 6

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 7

Match the structure to its description.
-have gamma motor neurons that innervate internal fibers

Accepted Answer

A) muscle spindles 
B) Golgi tendon organs 
C) both

Question 8

The reflex that prevents a muscle from exerting too much tension is the

Accepted Answer

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

Question 9

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

A)  Tina has injured one of her descending nerve tracts. 
B)  Tina has injured one of her ascending nerve tracts. 
C)  Tina has a spinal injury in the lumbar region. 
D)  Tina has a spinal injury in the cervical region. 
E)  Tina suffered no damage to her spinal cord.

Question 10

Two of your physiology classmates are trying to figure out if cross country skiing is a voluntary activity or a rhythmic activity.They come to you to determine who is correct.What do you tell them?

Accepted Answer

The answer of Two of your physiology classmates are trying...

Question 11

After stretching an intrafusal fiber,the next event is

Accepted Answer

A)  an increase in action potentials along the associated sensory neuron. 
B)  a decrease in muscle tension. 
C)  a decrease in muscle tone. 
D)  decreased sensitivity to stretching. 
E)  All of the answers are correct.

Question 12

You are a technician in a neuroanatomy lab,and it's your first day of training to learn a technique of labeling neurons.Your boss tells you that you will fill individual motor neurons,by injecting horseradish peroxidase (HRP)conjugated to tetanus toxin,into a skeletal muscle.How could this possibly label the neurons?

Accepted Answer

The answer of You are a technician in a neuroanatomy...

Question 13

Spinal interneurons prevent muscle antagonists from interfering with an intended movement by

Accepted Answer

A)  initiating a crossed extensor reflex. 
B)  initiating a stretch reflex. 
C)  initiating a tendon reflex. 
D)  the process of reciprocal inhibition. 
E)  activating reverberating circuits.

Question 14

The tension maintained in a muscle at rest is known as ________.

Accepted Answer

The answer of The tension maintained in a muscle at...

Question 15

Which is NOT true regarding autonomic reflexes?

Accepted Answer

A)  Vomiting, sneezing, and coughing are all examples of autonomic reflexes. 
B)  Integrating centers for autonomic reflexes in the brain include the hypothalamus, brain stem, and limbic system. 
C)  Autonomic reflexes are all monosynaptic, with their synapse in the central nervous system. 
D)  Many autonomic reflexes are characterized by tonic activity, a continuous stream of action potentials.

Question 16

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 17

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 18

Match the type of reflex to its description.
-an example would be slowing or speeding the heart and other internal organs that are not consciously controlled

Accepted Answer

A) somatic 
B) autonomic 
C) spinal 
D) cranial 
E) innate
F)acquired
G)polysynaptic

Question 19

Upon testing the knee jerk reflex during a routine physical,a nurse notices that the reflex is hyperactive.What could be the explanation for this? If instead the reflex was hypoactive,what may the nurse conclude?

Accepted Answer

The answer of Upon testing the knee jerk reflex during...

Question 20

The flexion reflex

Accepted Answer

A)  prevents a muscle from overstretching. 
B)  prevents a muscle from generating damaging tension. 
C)  moves a limb away from a painful stimulus. 
D)  makes adjustments in other parts of the body in response to a particular stimulus. 
E)  is an example of a monosynaptic reflex.

Exam 13: Integrative Physiology I: Control of Body Movement

Match the type of reflex to its description. -reflexes that one is born with; genetically determined

Match the structure to its description. -have afferent neurons that bring information to the CNS

Match the type of reflex to its description. -several neurons involved in a pathway; can be complex

Match the structure to its description. -eventually synapses with alpha motor neurons that innervate extrafusal muscle fibers

The motor neurons associated with intrafusal muscle fibers are referred to as ________ motor neurons.

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

Match the structure to its description. -have gamma motor neurons that innervate internal fibers

The reflex that prevents a muscle from exerting too much tension is the

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

Two of your physiology classmates are trying to figure out if cross country skiing is a voluntary activity or a rhythmic activity.They come to you to determine who is correct.What do you tell them?

After stretching an intrafusal fiber,the next event is

Spinal interneurons prevent muscle antagonists from interfering with an intended movement by

The tension maintained in a muscle at rest is known as ________.

Which is NOT true regarding autonomic reflexes?

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

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

Match the type of reflex to its description. -an example would be slowing or speeding the heart and other internal organs that are not consciously controlled

Upon testing the knee jerk reflex during a routine physical,a nurse notices that the reflex is hyperactive.What could be the explanation for this? If instead the reflex was hypoactive,what may the nurse conclude?

The flexion reflex