Question 1

Which of the following parts of a reflex arc receives sensory information and decides how to respond to a change in the body's condition?

Accepted Answer

A) Sensory receptor 
B) Sensory neuron 
C) Motor neuron 
D) Effector 
E) Integration center 
A) Sensory receptor 
B) Sensory neuron 
C) Motor neuron 
D) Effector 
E) Integration center E

Question 2

Which of the following lists the connective tissue coverings of the axons,fascicles,and entire nerve in the correct order?

Accepted Answer

A) endoneurium,perineurium,epineurium 
B) endoneurium,epineurium,perineurium 
C) perineurium,epineurium,endoneurium 
D) epineurium,endoneurium,perineurium 
A) endoneurium,perineurium,epineurium 
B) endoneurium,epineurium,perineurium 
C) perineurium,epineurium,endoneurium 
D) epineurium,endoneurium,perineurium A

Question 3

What type(s)of axons are wrapped in a protective endoneurium?
1)Myelinated
2)Unmyelinated
3)Only dendrites are surrounded by endoneurium

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) Both 1 and 2 
E) None of these choices 
A) 1 only 
B) 2 only 
C) 3 only 
D) Both 1 and 2 
E) None of these choices D

Question 4

Which of the following is NOT a characteristic of the spinothalamic tract?

Accepted Answer

A) Begins in the spinal cord 
B) Terminates in the thalamus 
C) Found in the white matter of the spinal cord 
D) Carries motor information down the cord 
E) Is composed of multiple axons carrying information in the spinal cord 
A) Begins in the spinal cord 
B) Terminates in the thalamus 
C) Found in the white matter of the spinal cord 
D) Carries motor information down the cord 
E) Is composed of multiple axons carrying information in the spinal cord

Question 5

Which of the following nerves is labeled B in the diagram?

Accepted Answer

A) phrenic nerve 
B) axillary nerve 
C) intercostal nerve 
D) femoral nerve 
E) common fibular nerve 
A) phrenic nerve 
B) axillary nerve 
C) intercostal nerve 
D) femoral nerve 
E) common fibular nerve

Question 6

The structure labeled F in the diagram belongs to which group of spinal nerves?

Accepted Answer

A) cervical nerves 
B) thoracic nerves 
C) lumbar nerves 
D) sacral nerves 
E) coccygeal nerves 
A) cervical nerves 
B) thoracic nerves 
C) lumbar nerves 
D) sacral nerves 
E) coccygeal nerves

Question 7

Which of following is NOT a function of the spinal reflexes that use muscle spindles and tendon organs as sensors?

Accepted Answer

A) Awareness of muscle tension in body 
B) Prevention of damage to muscles 
C) Protection of spinal nerves 
D) Prevention of damage to tendons 
E) Maintenance of muscle tone 
A) Awareness of muscle tension in body 
B) Prevention of damage to muscles 
C) Protection of spinal nerves 
D) Prevention of damage to tendons 
E) Maintenance of muscle tone

Question 8

Which type of descending motor pathway originates in the brainstem and governs automatic movements that help regulate muscle tone,posture and balance?

Accepted Answer

A) Indirect pathway 
B) Direct pathway 
C) Reflex arc 
D) Somatic arc 
E) Muscle spindles 
A) Indirect pathway 
B) Direct pathway 
C) Reflex arc 
D) Somatic arc 
E) Muscle spindles

Question 9

Which of the following parts of a reflex arc would have a cell body in the posterior root ganglion?

Accepted Answer

A) Sensory receptor cell 
B) Sensory neuron 
C) Motor neuron 
D) Effector 
E) Interneuron 
A) Sensory receptor cell 
B) Sensory neuron 
C) Motor neuron 
D) Effector 
E) Interneuron

Question 10

Discuss the clinical significance of dermatomes.

Accepted Answer

Knowing which spinal cord segments suppl

Question 11

In response to a muscle being stretched,a muscle spindle initiates a somatic spinal reflex that causes
1)contraction of the agonist muscle.
2)relaxation of the antagonist muscle.
3)contraction of the antagonist muscle.
4)relaxation of the agonist muscle.

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) 4 only 
E) 1 and 2 
A) 1 only 
B) 2 only 
C) 3 only 
D) 4 only 
E) 1 and 2

Question 12

The cell bodies of the sensory neurons that carry information from the periphery to the spinal cord are located in the

Accepted Answer

A) anterior white commissure. 
B) central canal. 
C) lateral gray horn. 
D) posterior root ganglion. 
E) posterior gray horn. 
A) anterior white commissure. 
B) central canal. 
C) lateral gray horn. 
D) posterior root ganglion. 
E) posterior gray horn.

Question 13

Which type of descending motor pathway conveys nerve impulses that originate in the cerebral cortex and are destined to cause precise,voluntary movements of skeletal muscles?

Accepted Answer

A) Indirect pathway 
B) Direct pathway 
C) Reflex arc 
D) Somatic arc 
E) Muscle spindle 
A) Indirect pathway 
B) Direct pathway 
C) Reflex arc 
D) Somatic arc 
E) Muscle spindle

Question 14

A somatic spinal reflex that involves one effector muscle being stimulated while the opposing muscle is inhibited is called _____ innervation.

Accepted Answer

A) reversal 
B) relaxed 
C) representative 
D) reciprocal 
E) relegated 
A) reversal 
B) relaxed 
C) representative 
D) reciprocal 
E) relegated

Question 15

Where is the posterior ramus?

Accepted Answer

A) B 
B) C 
C) G 
D) H 
E) None of these choices 
A) B 
B) C 
C) G 
D) H 
E) None of these choices

Question 16

Which of the following is NOT a common characteristic of dermatomes?

Accepted Answer

A) Can be used clinically to determine area of spinal cord damage 
B) Each dermatome is only served by a single spinal nerve 
C) Complete anesthesia of a single dermatome often requires blocking three adjacent spinal nerves 
D) Dermatomes are designated based on the cranial or spinal nerve that serves that area of the skin 
E) The dermatome serving the face is supplied by the trigeminal cranial nerve 
A) Can be used clinically to determine area of spinal cord damage 
B) Each dermatome is only served by a single spinal nerve 
C) Complete anesthesia of a single dermatome often requires blocking three adjacent spinal nerves 
D) Dermatomes are designated based on the cranial or spinal nerve that serves that area of the skin 
E) The dermatome serving the face is supplied by the trigeminal cranial nerve

Question 17

Which of the structures listed below contains cerebrospinal fluid?

Accepted Answer

A) Epidural space 
B) Subarachnoid space 
C) Dural space 
D) Meninx 
E) Pia mater 
A) Epidural space 
B) Subarachnoid space 
C) Dural space 
D) Meninx 
E) Pia mater

Question 18

Which of the following structures is labeled G in the diagram?

Accepted Answer

A) Lumbar enlargement 
B) Cervical enlargement 
C) Conus medullaris 
D) Cauda equina 
E) Obturator nerve 
A) Lumbar enlargement 
B) Cervical enlargement 
C) Conus medullaris 
D) Cauda equina 
E) Obturator nerve

Question 19

Which of the following is a degenerative disease of the spinal cord?

Accepted Answer

A) amyotrophic lateral sclerosis 
B) shingles 
C) poliomyelitis 
D) areflexia 
E) all of these are degenerative diseases of the spinal cord 
A) amyotrophic lateral sclerosis 
B) shingles 
C) poliomyelitis 
D) areflexia 
E) all of these are degenerative diseases of the spinal cord

Question 20

Which region of the spinal cord carries nerve impulses for proprioception?

Accepted Answer

A) Posterior white column 
B) Anterior gray horn 
C) Anterior white column 
D) Lateral white column 
E) Dermatome tract 
A) Posterior white column 
B) Anterior gray horn 
C) Anterior white column 
D) Lateral white column 
E) Dermatome tract

Exam 13: The Spinal Cord and Spinal Nerves

Which of the following parts of a reflex arc receives sensory information and decides how to respond to a change in the body's condition?

Which of the following lists the connective tissue coverings of the axons,fascicles,and entire nerve in the correct order?

What type(s)of axons are wrapped in a protective endoneurium? 1)Myelinated 2)Unmyelinated 3)Only dendrites are surrounded by endoneurium

Which of the following is NOT a characteristic of the spinothalamic tract?

Which of the following nerves is labeled B in the diagram?

The structure labeled F in the diagram belongs to which group of spinal nerves?

Which of following is NOT a function of the spinal reflexes that use muscle spindles and tendon organs as sensors?

Which type of descending motor pathway originates in the brainstem and governs automatic movements that help regulate muscle tone,posture and balance?

Which of the following parts of a reflex arc would have a cell body in the posterior root ganglion?

Discuss the clinical significance of dermatomes.

In response to a muscle being stretched,a muscle spindle initiates a somatic spinal reflex that causes 1)contraction of the agonist muscle. 2)relaxation of the antagonist muscle. 3)contraction of the antagonist muscle. 4)relaxation of the agonist muscle.

The cell bodies of the sensory neurons that carry information from the periphery to the spinal cord are located in the

Which type of descending motor pathway conveys nerve impulses that originate in the cerebral cortex and are destined to cause precise,voluntary movements of skeletal muscles?

A somatic spinal reflex that involves one effector muscle being stimulated while the opposing muscle is inhibited is called _____ innervation.

Where is the posterior ramus?

Which of the following is NOT a common characteristic of dermatomes?

Which of the structures listed below contains cerebrospinal fluid?

Which of the following structures is labeled G in the diagram?

Which of the following is a degenerative disease of the spinal cord?

Which region of the spinal cord carries nerve impulses for proprioception?

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System Unit Ii: Principles of Support and Movement

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: the Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System Unit Iii: Control Systems of the Human Body

Nervous Tissue

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor and Integrative Systems

The Special Senses

The Endocrine System Unit Iv: Maintenance of the Human Body

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System, Nonspecific Resistance to Disease, and Immunity

The Respiratory System

The Digestive System

Metabolism

The Urinary System

Fluid, Electrolyte, and Acid-Base Homeostasis Unit V: Continuity

The Reproductive Systems

Development and Inheritance

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