Question 1

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the

Accepted Answer

A) dura mater. 
B) arachnoid mater. 
C) epidural space. 
D) subarachnoid space. 
E) cerebral ventricles. 
A) dura mater. 
B) arachnoid mater. 
C) epidural space. 
D) subarachnoid space. 
E) cerebral ventricles.

Question 2

The preganglionic fibers that connect a spinal nerve with an autonomic ganglion in the thoracic and lumbar region of the spinal cord and carries visceral motor fibers that are myelinated form the

Accepted Answer

A) white rami communicantes. 
B) gray rami communicantes. 
C) dorsal ramus. 
D) ventral ramus. 
E) dermatomes. 
A) white rami communicantes. 
B) gray rami communicantes. 
C) dorsal ramus. 
D) ventral ramus. 
E) dermatomes.

Question 3

Figure 13-1 The Spinal Cord
Use Figure 13-1 to answer the following questions:
-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 4

Postganglionic fibers of the autonomic nervous system that innervate internal organs are

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 5

Figure 13-1 The Spinal Cord
Use Figure 13-1 to answer the following questions:
-What is the function of the structure labeled "14"?

Accepted Answer

A) control of skeletal muscle 
B) somatic sensory processing 
C) control of visceral effectors 
D) somatic motor control 
E) visceral sensory processing 
A) control of skeletal muscle 
B) somatic sensory processing 
C) control of visceral effectors 
D) somatic motor control 
E) visceral sensory processing

Question 6

The ________ of each spinal nerve innervates the skin and muscles of the back.

Accepted Answer

A) white ramus communicantes 
B) gray ramus communicantes 
C) dorsal ramus 
D) ventral ramus 
E) dermatome 
A) white ramus communicantes 
B) gray ramus communicantes 
C) dorsal ramus 
D) ventral ramus 
E) dermatome

Question 7

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

Accepted Answer

A reflex arc is the wiring pattern of ne

Question 8

The postganglionic fibers that connect an autonomic ganglion in the thoracic or lumbar region with the spinal nerve and contain postganglionic fibers that innervate glands in the body wall or smooth muscles in limbs are

Accepted Answer

A) white rami communicantes. 
B) gray rami communicantes. 
C) dorsal ramus. 
D) ventral ramus. 
E) dermatomes. 
A) white rami communicantes. 
B) gray rami communicantes. 
C) dorsal ramus. 
D) ventral ramus. 
E) dermatomes.

Question 9

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 10

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 11

In which of the following would the delay between stimulus and response be greater?

Accepted Answer

A) a monosynaptic reflex 
B) a polysynaptic reflex 
A) a monosynaptic reflex 
B) a polysynaptic reflex

Question 12

The most complicated spinal reflexes are called

Accepted Answer

A) collateral reflex arcs. 
B) ipsilateral reflex arcs. 
C) intersegmental reflex arcs. 
D) dermatomes. 
E) spinal plexuses. 
A) collateral reflex arcs. 
B) ipsilateral reflex arcs. 
C) intersegmental reflex arcs. 
D) dermatomes. 
E) spinal plexuses.

Question 13

In the spinal cord,white matter is separated into ascending and descending tracts organized as

Accepted Answer

A) nuclei. 
B) ganglia. 
C) columns. 
D) nerves. 
E) horns. 
A) nuclei. 
B) ganglia. 
C) columns. 
D) nerves. 
E) horns.

Question 14

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 15

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 16

The dorsal root of a spinal nerve contains

Accepted Answer

A) axons of motor neurons. 
B) axons of sensory neurons. 
C) cell bodies of motor neurons. 
D) cell bodies of sensory neurons. 
E) interneurons. 
A) axons of motor neurons. 
B) axons of sensory neurons. 
C) cell bodies of motor neurons. 
D) cell bodies of sensory neurons. 
E) interneurons.

Question 17

The ventral rami of spinal nerves C5 to T1 contribute fibers to the ________ plexus.

Accepted Answer

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

Question 18

Which statement is false regarding reflexes?

Accepted Answer

A) Reflex responses can change over time. 
B) You have no conscious control or modification ability over reflex action. 
C) Some reflex responses are hereditary. 
D) Reflex responses can be enhanced by repetition. 
E) All of the above statements are true; there are no false statements. 
A) Reflex responses can change over time. 
B) You have no conscious control or modification ability over reflex action. 
C) Some reflex responses are hereditary. 
D) Reflex responses can be enhanced by repetition. 
E) All of the above statements are true; there are no false statements.

Question 19

The brachial plexus gives rise to all of the following nerves except the

Accepted Answer

A) radial. 
B) median. 
C) ulnar. 
D) musculocutaneous. 
E) phrenic. 
A) radial. 
B) median. 
C) ulnar. 
D) musculocutaneous. 
E) phrenic.

Question 20

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

Accepted Answer

A) anterior white column 
B) lateral white column 
C) lateral white horn 
D) median commissure 
E) posterior white column 
A) anterior white column 
B) lateral white column 
C) lateral white horn 
D) median commissure 
E) posterior white column

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

Samples of CSF for diagnostic purposes are normally obtained by placing the tip of a needle in the

The preganglionic fibers that connect a spinal nerve with an autonomic ganglion in the thoracic and lumbar region of the spinal cord and carries visceral motor fibers that are myelinated form the

Figure 13-1 The Spinal Cord Use Figure 13-1 to answer the following questions: -What is the function of the structure labeled "12"?

Postganglionic fibers of the autonomic nervous system that innervate internal organs are

Figure 13-1 The Spinal Cord Use Figure 13-1 to answer the following questions: -What is the function of the structure labeled "14"?

The ________ of each spinal nerve innervates the skin and muscles of the back.

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

The postganglionic fibers that connect an autonomic ganglion in the thoracic or lumbar region with the spinal nerve and contain postganglionic fibers that innervate glands in the body wall or smooth muscles in limbs are

Which of the following is true regarding an epidural block?

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

In which of the following would the delay between stimulus and response be greater?

The most complicated spinal reflexes are called

In the spinal cord,white matter is separated into ascending and descending tracts organized as

Reflexes can be classified according to all of the following except

The spinal cord continues to elongate until about age

The dorsal root of a spinal nerve contains

The ventral rami of spinal nerves C5 to T1 contribute fibers to the ________ plexus.

Which statement is false regarding reflexes?

The brachial plexus gives rise to all of the following nerves except the

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

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

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

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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