Question 1

The stretch reflex

Accepted Answer

A)  is an example of a polysynaptic reflex. 
B)  is important in regulating muscle length. 
C)  involves a receptor called the Golgi tendon organ. 
D)  is activated when a smooth muscle lengthens. 
E)  none of the above 
A)  is an example of a polysynaptic reflex. 
B)  is important in regulating muscle length. 
C)  involves a receptor called the Golgi tendon organ. 
D)  is activated when a smooth muscle lengthens. 
E)  none of the above

Question 2

The spinal cord continues to elongate until about age

Accepted Answer

A)  20 years. 
B)  10 years. 
C)  4 years. 
D)  6 months. 
E)  2 months. 
A)  20 years. 
B)  10 years. 
C)  4 years. 
D)  6 months. 
E)  2 months.

Question 3

Which of the following associations is incorrect?

Accepted Answer

A)  8 cervical spinal nerves 
B)  11 thoracic spinal nerves 
C)  5 lumbar spinal nerves 
D)  5 sacral spinal nerves 
E)  1 coccygeal spinal nerve 
A)  8 cervical spinal nerves 
B)  11 thoracic spinal nerves 
C)  5 lumbar spinal nerves 
D)  5 sacral spinal nerves 
E)  1 coccygeal spinal nerve

Question 4

Somatic motor neurons in the spinal cord control all of the following muscles, except those that

Accepted Answer

A)  position the pectoral girdle. 
B)  move the arm. 
C)  move the hand and fingers. 
D)  move the face. 
E)  move the forearm and hand. 
A)  position the pectoral girdle. 
B)  move the arm. 
C)  move the hand and fingers. 
D)  move the face. 
E)  move the forearm and hand.

Question 5

If a person has a crush injury to the C₃-C₅ spinal segments, you would expect that he

Accepted Answer

A)  might be unable to breathe on his own. 
B)  could walk without difficulty. 
C)  would have full range of motion in all extremities. 
D)  would be in a coma. 
E)  would exhibit none of the above. 
A)  might be unable to breathe on his own. 
B)  could walk without difficulty. 
C)  would have full range of motion in all extremities. 
D)  would be in a coma. 
E)  would exhibit none of the above.

Question 6

Reflexes can be classified according to all of the following, except

Accepted Answer

A)  their development. 
B)  where information processing occurs. 
C)  the motor response. 
D)  the complexity of the neural circuit. 
E)  whether they are sensory or motor. 
A)  their development. 
B)  where information processing occurs. 
C)  the motor response. 
D)  the complexity of the neural circuit. 
E)  whether they are sensory or motor.

Question 7

A dorsal and ventral root of each spinal segment unite to form a

Accepted Answer

A)  cervical enlargement. 
B)  lumbar enlargement. 
C)  spinal nerve. 
D)  spinal meninx. 
E)  spinal ganglion. 
A)  cervical enlargement. 
B)  lumbar enlargement. 
C)  spinal nerve. 
D)  spinal meninx. 
E)  spinal ganglion.

Question 8

The subdural space lies between

Accepted Answer

A)  the arachnoid mater and the pia mater. 
B)  the pia mater and the dura mater. 
C)  the dura mater and the arachnoid mater. 
D)  the pia mater and the subarachnoid space. 
E)  the endosteum and the periosteum. 
A)  the arachnoid mater and the pia mater. 
B)  the pia mater and the dura mater. 
C)  the dura mater and the arachnoid mater. 
D)  the pia mater and the subarachnoid space. 
E)  the endosteum and the periosteum.

Question 9

In which structure are sensory cell bodies located?

Accepted Answer

A)  4 
B)  6 
C)  5 
D)  10 
E)  12 
A)  4 
B)  6 
C)  5 
D)  10 
E)  12

Question 10

In ________, one neuron synapses on several postsynaptic neurons.

Accepted Answer

The answer of In ________, one neuron synapses on several...

Question 11

All of the following are True of neural reflexes, except that they

Accepted Answer

A)  are automatic motor responses. 
B)  are the simplest form of behavior. 
C)  help preserve homeostasis. 
D)  cannot be modified by the brain. 
E)  involve at least two neurons. 
A)  are automatic motor responses. 
B)  are the simplest form of behavior. 
C)  help preserve homeostasis. 
D)  cannot be modified by the brain. 
E)  involve at least two neurons.

Question 12

During the procedure known as a(n) ________, a needle is inserted into the subarachnoid space in the inferior lumbar region.

Accepted Answer

lumbar pun

Question 13

The ________ reflex complements the flexor reflex by activating contralateral muscles.

Accepted Answer

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

Question 14

Compared to the vertebral column, the spinal cord is

Accepted Answer

A)  longer. 
B)  shorter. 
C)  the same length. 
A)  longer. 
B)  shorter. 
C)  the same length.

Question 15

Which of the following is not True about a positive Babinski reflex?

Accepted Answer

A)  normal in newborns 
B)  abnormal in adults 
C)  a sign of injury to descending spinal tracts 
D)  causes you to close your eyes when you sneeze 
E)  causes flaring of the toes when the sole is stroked 
A)  normal in newborns 
B)  abnormal in adults 
C)  a sign of injury to descending spinal tracts 
D)  causes you to close your eyes when you sneeze 
E)  causes flaring of the toes when the sole is stroked

Question 16

What is the function of the structure labeled "12"?

Accepted Answer

A)  control of skeletal muscle 
B)  somatic sensory receiving 
C)  visceral sensory receiving 
D)  control of visceral effectors 
E)  ascending pathway 
A)  control of skeletal muscle 
B)  somatic sensory receiving 
C)  visceral sensory receiving 
D)  control of visceral effectors 
E)  ascending pathway

Question 17

In an adult, the conus medullaris is found at about

Accepted Answer

A)  T₆. 
B)  T₁₀. 
C)  L₁. 
D)  L₅. 
E)  Co₁. 
A)  T₆. 
B)  T₁₀. 
C)  L₁. 
D)  L₅. 
E)  Co₁.

Question 18

Spinal nerves from the sacral region of the cord innervate the ________ muscles.

Accepted Answer

A)  shoulder 
B)  intercostal 
C)  abdominal 
D)  leg 
E)  facial 
A)  shoulder 
B)  intercostal 
C)  abdominal 
D)  leg 
E)  facial

Question 19

What is a reflex arc?
 What components must be present to qualify?

Accepted Answer

A reflex arc is the wiring pattern of ne

Question 20

In which plexus does the ulnar nerve arise?

Accepted Answer

A)  cranial 
B)  cervical 
C)  brachial 
D)  lumbar 
E)  sacral 
A)  cranial 
B)  cervical 
C)  brachial 
D)  lumbar 
E)  sacral

Exam 12: The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The stretch reflex

The spinal cord continues to elongate until about age

Which of the following associations is incorrect?

Somatic motor neurons in the spinal cord control all of the following muscles, except those that

If a person has a crush injury to the C₃-C₅ spinal segments, you would expect that he

Reflexes can be classified according to all of the following, except

A dorsal and ventral root of each spinal segment unite to form a

The subdural space lies between

In which structure are sensory cell bodies located?

In ________, one neuron synapses on several postsynaptic neurons.

All of the following are True of neural reflexes, except that they

During the procedure known as a(n) ________, a needle is inserted into the subarachnoid space in the inferior lumbar region.

The ________ reflex complements the flexor reflex by activating contralateral muscles.

Compared to the vertebral column, the spinal cord is

Which of the following is not True about a positive Babinski reflex?

What is the function of the structure labeled "12"?

In an adult, the conus medullaris is found at about

Spinal nerves from the sacral region of the cord innervate the ________ muscles.

What is a reflex arc? What components must be present to qualify?

In which plexus does the ulnar nerve arise?

An Introduction to Anatomy and Physiology

Chemical Level of Organization

Cellular Level of Organization

Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Skeleton

Articulations

Skeletal Muscle Tissue

The Muscular System

Neural Tissue

The Brain and Cranial Nerves

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood and Blood Vessels

The Heart and Cardiovascular Function

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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