Question 1

The dorsal root contains ________ neurons.

Accepted Answer

The answer of The dorsal root contains ________ neurons....

Question 2

Postganglionic fibers of the autonomic nervous system that innervate internal organs do not rejoin the spinal nerve but form

Accepted Answer

A) dorsal rami. 
B) ventral rami. 
C) white rami. 
D) gray rami. 
E) sympathetic nerves. 
A) dorsal rami. 
B) ventral rami. 
C) white rami. 
D) gray rami. 
E) sympathetic nerves.

Question 3

Suppose that you feel something brushing against your abdomen.The sensory information would be carried to the spinal cord over a ________ ramus.

Accepted Answer

The answer of Suppose that you feel something brushing against...

Question 4

The spinal cord is part of the

Accepted Answer

A) peripheral nervous system. 
B) somatic nervous system. 
C) central nervous system. 
D) autonomic nervous system. 
E) afferent nervous system. 
A) peripheral nervous system. 
B) somatic nervous system. 
C) central nervous system. 
D) autonomic nervous system. 
E) afferent nervous system.

Question 5

Blood vessels that supply the spinal cord run along the surface of the

Accepted Answer

A) pia mater. 
B) dura mater. 
C) epidural space. 
D) subdural space. 
E) subarachnoid space. 
A) pia mater. 
B) dura mater. 
C) epidural space. 
D) subdural space. 
E) subarachnoid space.

Question 6

Which of the following is true regarding an epidural block?

Accepted Answer

A) It is commonly used as a method of pain control during labor and delivery. 
B) It affects only the spinal nerves in the immediate area of the injection. 
C) It can provide sensory and motor anesthesia,depending on the anesthetic selected. 
D) It can provide mainly sensory anesthesia,depending on the anesthetic selected. 
E) All of the answers are correct. 
A) It is commonly used as a method of pain control during labor and delivery. 
B) It affects only the spinal nerves in the immediate area of the injection. 
C) It can provide sensory and motor anesthesia,depending on the anesthetic selected. 
D) It can provide mainly sensory anesthesia,depending on the anesthetic selected. 
E) All of the answers are correct.

Question 7

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 8

If the dorsal root of a spinal nerve is severed,

Accepted Answer

A) output to skeletal muscles would be blocked. 
B) output to visceral organs would be blocked. 
C) the spinal cord would not be able to process information at that level. 
D) the brain would not be able to communicate with that level of the spinal cord. 
E) sensory input would be blocked. 
A) output to skeletal muscles would be blocked. 
B) output to visceral organs would be blocked. 
C) the spinal cord would not be able to process information at that level. 
D) the brain would not be able to communicate with that level of the spinal cord. 
E) sensory input would be blocked.

Question 9

After age ________ the vertebral column continues to elongate,but the spinal cord itself does not.

Accepted Answer

A) 8 
B) 12 
C) 18 
D) 4 
E) 1 
A) 8 
B) 12 
C) 18 
D) 4 
E) 1

Question 10

Figure 13-2 Spinal Nerves
Use Figure 13-2 to answer the following questions:
-Identify the structure labeled "2."

Accepted Answer

A) ventral root 
B) dorsal ramus 
C) spinal nerve 
D) ventral ramus 
E) white ramus 
A) ventral root 
B) dorsal ramus 
C) spinal nerve 
D) ventral ramus 
E) white ramus

Question 11

What would happen if the dorsal root of a spinal nerve were completely transected?

Accepted Answer

The dorsal roots contain axons of sensor

Question 12

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 have difficulty chewing and moving the tongue. 
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 have difficulty chewing and moving the tongue.

Question 13

Figure 13-1 The Spinal Cord
Use Figure 13-1 to answer the following questions:
-Identify the structure labeled "10."

Accepted Answer

A) anterior white commissure 
B) anterior median fissure 
C) anterior white column 
D) anterior gray commissure 
E) anterior white horn 
A) anterior white commissure 
B) anterior median fissure 
C) anterior white column 
D) anterior gray commissure 
E) anterior white horn

Question 14

The posterior horns of the spinal cord contain mainly

Accepted Answer

A) sensory nuclei. 
B) somatic motor nuclei. 
C) autonomic motor nuclei. 
D) nerve tracts. 
E) sympathetic nuclei. 
A) sensory nuclei. 
B) somatic motor nuclei. 
C) autonomic motor nuclei. 
D) nerve tracts. 
E) sympathetic nuclei.

Question 15

The anterior horns of the spinal cord contain mainly

Accepted Answer

A) sensory nuclei. 
B) somatic motor nuclei. 
C) autonomic motor nuclei. 
D) nerve tracts. 
E) sympathetic nuclei. 
A) sensory nuclei. 
B) somatic motor nuclei. 
C) autonomic motor nuclei. 
D) nerve tracts. 
E) sympathetic nuclei.

Question 16

The nerve crucial for breathing that originates within the cervical plexus is called the ________ nerve.

Accepted Answer

The answer of The nerve crucial for breathing that originates...

Question 17

Mary is in an automobile accident and suffers a spinal cord injury.She has lost feeling in her lower body.Her doctor tells her that swelling is compressing a portion of her spinal cord.Which part of her cord is likely to be compressed?

Accepted Answer

A) the anterior gray horns 
B) the anterior gray commissures 
C) ascending tracts 
D) descending tracts 
E) the anterior white commissures 
A) the anterior gray horns 
B) the anterior gray commissures 
C) ascending tracts 
D) descending tracts 
E) the anterior white commissures

Question 18

Figure 13-1 The Spinal Cord
Use Figure 13-1 to answer the following questions:
-Where are the white columns of the spinal cord?

Accepted Answer

A) 4,5,6 
B) 1,2,3 
C) 7,11 
D) 12,13 
E) 8 
A) 4,5,6 
B) 1,2,3 
C) 7,11 
D) 12,13 
E) 8

Question 19

The gray horns of the spinal cord contain mainly

Accepted Answer

A) nerve tracts. 
B) columns. 
C) meninges. 
D) nerve cell bodies. 
E) funiculi. 
A) nerve tracts. 
B) columns. 
C) meninges. 
D) nerve cell bodies. 
E) funiculi.

Question 20

Axons crossing from one side of the spinal cord to the other within the gray matter are found in the

Accepted Answer

A) anterior gray horns. 
B) lateral gray horns. 
C) posterior gray horns. 
D) gray commissures. 
E) white commissures. 
A) anterior gray horns. 
B) lateral gray horns. 
C) posterior gray horns. 
D) gray commissures. 
E) white commissures.

Exam 13: The Spinal Cord, spinal Nerves, and Spinal Reflexes

The dorsal root contains ________ neurons.

Postganglionic fibers of the autonomic nervous system that innervate internal organs do not rejoin the spinal nerve but form

Suppose that you feel something brushing against your abdomen.The sensory information would be carried to the spinal cord over a ________ ramus.

The spinal cord is part of the

Blood vessels that supply the spinal cord run along the surface of the

Which of the following is true regarding an epidural block?

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

If the dorsal root of a spinal nerve is severed,

After age ________ the vertebral column continues to elongate,but the spinal cord itself does not.

Figure 13-2 Spinal Nerves Use Figure 13-2 to answer the following questions: -Identify the structure labeled "2."

What would happen if the dorsal root of a spinal nerve were completely transected?

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

Figure 13-1 The Spinal Cord Use Figure 13-1 to answer the following questions: -Identify the structure labeled "10."

The posterior horns of the spinal cord contain mainly

The anterior horns of the spinal cord contain mainly

The nerve crucial for breathing that originates within the cervical plexus is called the ________ nerve.

Mary is in an automobile accident and suffers a spinal cord injury.She has lost feeling in her lower body.Her doctor tells her that swelling is compressing a portion of her spinal cord.Which part of her cord is likely to be compressed?

Figure 13-1 The Spinal Cord Use Figure 13-1 to answer the following questions: -Where are the white columns of the spinal cord?

The gray horns of the spinal cord contain mainly

Axons crossing from one side of the spinal cord to the other within the gray matter are found in the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Articulations

Muscle Tissue

The Muscular System

Neural Tissue

The Brain and Cranial Nerves

Neural Integration I: Sensory Pathways and the Somatic Nervous System

Neural Integration Ii: the Autonomic Nervous System and

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

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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