Question 1

Stretch reflexes

Accepted Answer

A)  are learned voluntary responses. 
B)  aid in maintaining proper posture. 
C)  prevent muscles from being damaged by excessive tension. 
D)  cause the removal of limbs from painful stimuli. 
E)  prevent falling. 
A)  are learned voluntary responses. 
B)  aid in maintaining proper posture. 
C)  prevent muscles from being damaged by excessive tension. 
D)  cause the removal of limbs from painful stimuli. 
E)  prevent falling.

Question 2

Structurally, the simplest reflex is the

Accepted Answer

A)  stretch reflex. 
B)  Golgi tendon reflex. 
C)  reciprocal reflex. 
D)  alternating reflex. 
E)  withdrawal reflex. 
A)  stretch reflex. 
B)  Golgi tendon reflex. 
C)  reciprocal reflex. 
D)  alternating reflex. 
E)  withdrawal reflex.

Question 3

In the spinal cord, white matter is organized into

Accepted Answer

A)  horns and the gray matter into columns. 
B)  horns and the gray matter into roots. 
C)  columns and the gray matter into horns. 
D)  columns and the gray matter into tracts. 
A)  horns and the gray matter into columns. 
B)  horns and the gray matter into roots. 
C)  columns and the gray matter into horns. 
D)  columns and the gray matter into tracts.

Question 4

Match the nerve with the appropriate description.
-partially responsible for a weight lifter suddenly dropping a weight that is too heavy

Accepted Answer

A) innervates the iliopsoas, sartorius, and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves 
A) innervates the iliopsoas, sartorius, and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves

Question 5

Match the nerve with the appropriate description.
-obturator nerve

Accepted Answer

A) innervates the iliopsoas, sartorius, and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves 
A) innervates the iliopsoas, sartorius, and quadriceps femoris 
B) innervates muscles of the pelvic floor 
C) innervates the muscles that adduct the thigh 
D) innervates the anterior and lateral muscles of the leg 
E) branches to form the medial and lateral plantar nerves

Question 6

Reciprocal innervation

Accepted Answer

A)  is associated with the Golgi tendon reflex. 
B)  stimulates antagonistic muscles. 
C)  results in reduced resistance to the reflex. 
D)  reinforces the withdrawal reflex. 
E)  inhibits the stretch reflex. 
A)  is associated with the Golgi tendon reflex. 
B)  stimulates antagonistic muscles. 
C)  results in reduced resistance to the reflex. 
D)  reinforces the withdrawal reflex. 
E)  inhibits the stretch reflex.

Question 7

The perineurium

Accepted Answer

A)  surrounds nerve cell bodies. 
B)  surrounds individual axons and their Schwann cells. 
C)  bundles axons into fascicles. 
D)  bundles fascicles into nerves. 
E)  bundles fascicles into axons. 
A)  surrounds nerve cell bodies. 
B)  surrounds individual axons and their Schwann cells. 
C)  bundles axons into fascicles. 
D)  bundles fascicles into nerves. 
E)  bundles fascicles into axons.

Question 8

Branches of the pudendal nerve are anesthetized during childbirth before the doctor performs a(an) _______________.

Accepted Answer

The answer of Branches of the pudendal nerve are anesthetized...

Question 9

Cutaneous sensory distribution of a spinal nerve can be mapped as a ________.

Accepted Answer

The answer of Cutaneous sensory distribution of a spinal nerve...

Question 10

The brachial plexus supplies nerves that function to contract which of the following?

Accepted Answer

A)  the diaphragm 
B)  intercostal muscles 
C)  muscles of the arm and forearm 
D)  muscles of the lower limb 
E)  abdominal muscles 
A)  the diaphragm 
B)  intercostal muscles 
C)  muscles of the arm and forearm 
D)  muscles of the lower limb 
E)  abdominal muscles

Question 11

The reflex that prevents excessive tension in a muscle is the

Accepted Answer

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

Question 12

The spinal cord

Accepted Answer

A)  controls the reticular activating system. 
B)  stores reflexive memory. 
C)  forms memory engrams. 
D)  links the peripheral nervous system to the brain. 
E)  is characterized by conscious activity. 
A)  controls the reticular activating system. 
B)  stores reflexive memory. 
C)  forms memory engrams. 
D)  links the peripheral nervous system to the brain. 
E)  is characterized by conscious activity.

Question 13

What is found the lateral gray horns of the spinal cord?

Accepted Answer

A)  The cell bodies of somatic motor neurons. 
B)  The cell bodies of sensory neurons. 
C)  The cell bodies of autonomic motor neurons. 
D)  The cell bodies of somatic sensory neurons. 
A)  The cell bodies of somatic motor neurons. 
B)  The cell bodies of sensory neurons. 
C)  The cell bodies of autonomic motor neurons. 
D)  The cell bodies of somatic sensory neurons.

Question 14

Initiating the withdrawal reflex in both legs at the same time would cause one to

Accepted Answer

A)  maintain posture longer. 
B)  fall. 
C)  decrease muscle tension. 
D)  develop resistance in one limb and reduce resistance in the other. 
E)  hop. 
A)  maintain posture longer. 
B)  fall. 
C)  decrease muscle tension. 
D)  develop resistance in one limb and reduce resistance in the other. 
E)  hop.

Question 15

What space, found between the vertebral wall and the dura mater, is the area for injecting anesthesia for childbirth?

Accepted Answer

A)  subarachnoid space 
B)  subdural space 
C)  epidural space 
D)  epipial space 
A)  subarachnoid space 
B)  subdural space 
C)  epidural space 
D)  epipial space

Question 16

The spinal cord ends at the

Accepted Answer

A)  sacrum. 
B)  coccyx. 
C)  5th lumbar vertebrae. 
D)  2nd lumbar vertebrae. 
A)  sacrum. 
B)  coccyx. 
C)  5th lumbar vertebrae. 
D)  2nd lumbar vertebrae.

Question 17

Place the following parts of a reflex arc in the correct order beginning with the sensory receptor. (1) motor neuron
(2) interneuron
(3) effector
(4) sensory neuron
(5) sensory receptor

Accepted Answer

A)  5, 1, 2, 3, 4 
B)  5, 3, 2, 4, 1 
C)  5, 4, 3, 2, 1 
D)  5, 2, 3, 4, 1 
E)  5, 4, 2, 1, 3 
A)  5, 1, 2, 3, 4 
B)  5, 3, 2, 4, 1 
C)  5, 4, 3, 2, 1 
D)  5, 2, 3, 4, 1 
E)  5, 4, 2, 1, 3

Question 18

A reflex that protects limbs by removing them from painful stimuli is the

Accepted Answer

A)  stretch reflex. 
B)  crossed extensor reflex. 
C)  Golgi tendon reflex. 
D)  alternating reflex. 
E)  withdrawal reflex 
A)  stretch reflex. 
B)  crossed extensor reflex. 
C)  Golgi tendon reflex. 
D)  alternating reflex. 
E)  withdrawal reflex

Question 19

If a withdrawal reflex is initiated in one leg, the crossed extensor reflex causes

Accepted Answer

A)  a withdrawal reflex in the opposite leg. 
B)  inhibition of abduction in the opposite leg. 
C)  extension of the opposite leg. 
D)  both legs to extend. 
E)  flexion of both legs. 
A)  a withdrawal reflex in the opposite leg. 
B)  inhibition of abduction in the opposite leg. 
C)  extension of the opposite leg. 
D)  both legs to extend. 
E)  flexion of both legs.

Question 20

-What does "E" represent?

Accepted Answer

A)  central canal 
B)  ventral root 
C)  dorsal root ganglion 
D)  spinal nerve 
E)  dorsal root 
A)  central canal 
B)  ventral root 
C)  dorsal root ganglion 
D)  spinal nerve 
E)  dorsal root

Exam 12: Spinal Cord and Spinal Nerves

Stretch reflexes

Structurally, the simplest reflex is the

In the spinal cord, white matter is organized into

Match the nerve with the appropriate description. -partially responsible for a weight lifter suddenly dropping a weight that is too heavy

Match the nerve with the appropriate description. -obturator nerve

Reciprocal innervation

The perineurium

Branches of the pudendal nerve are anesthetized during childbirth before the doctor performs a(an) _______________.

Cutaneous sensory distribution of a spinal nerve can be mapped as a ________.

The brachial plexus supplies nerves that function to contract which of the following?

The reflex that prevents excessive tension in a muscle is the

The spinal cord

What is found the lateral gray horns of the spinal cord?

Initiating the withdrawal reflex in both legs at the same time would cause one to

What space, found between the vertebral wall and the dura mater, is the area for injecting anesthesia for childbirth?

The spinal cord ends at the

Place the following parts of a reflex arc in the correct order beginning with the sensory receptor. (1) motor neuron (2) interneuron (3) effector (4) sensory neuron (5) sensory receptor

A reflex that protects limbs by removing them from painful stimuli is the

If a withdrawal reflex is initiated in one leg, the crossed extensor reflex causes

-What does "E" represent?

The Human Organism

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The Special Senses

Autonomic Nervous System

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Endocrine Glands

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