Question 1

Following an injury to his arm,a patient complains that he has no sensations from his "pinky." You suspect that he has damaged the

Accepted Answer

A) median nerve. 
B) radial nerve. 
C) musculocutaneous nerve. 
D) ulnar nerve. 
E) axillary nerve. 
A) median nerve. 
B) radial nerve. 
C) musculocutaneous nerve. 
D) ulnar nerve. 
E) axillary nerve.

Question 2

Each side of the spinal cord gives rise to _____ cervical nerves.

Accepted Answer

A) two 
B) six 
C) seven 
D) eight 
E) twelve 
A) two 
B) six 
C) seven 
D) eight 
E) twelve

Question 3

The fasciculus cuneatus is part of the

Accepted Answer

A) anterolateral pathway. 
B) spinocerebellar pathway. 
C) posterior funiculus--medial lemniscal pathway. 
D) lateral spinothalamic tract. 
E) fasciculus gracilis. 
A) anterolateral pathway. 
B) spinocerebellar pathway. 
C) posterior funiculus--medial lemniscal pathway. 
D) lateral spinothalamic tract. 
E) fasciculus gracilis.

Question 4

The neurons that directly innervate skeletal muscles are called

Accepted Answer

A) first-order neurons. 
B) second-order neurons. 
C) upper motor neurons. 
D) lower motor neurons. 
A) first-order neurons. 
B) second-order neurons. 
C) upper motor neurons. 
D) lower motor neurons.

Question 5

Motor pathways are also called ascending pathways.

Accepted Answer

A) True 
 B)False

Question 6

The lateral corticospinal tracts include a ________ of the upper motor neuron axons that pass through the medulla,and they govern control of ___________.

Accepted Answer

A) majority,axial muscles 
B) majority,muscles used for finely controlled movements 
C) minority,axial muscles 
D) minority,muscles used for finely controlled movements 
A) majority,axial muscles 
B) majority,muscles used for finely controlled movements 
C) minority,axial muscles 
D) minority,muscles used for finely controlled movements

Question 7

The cervical plexus is formed by the

Accepted Answer

A) posterior rami of spinal nerves C2-C6. 
B) posterior rami of spinal nerves C4-C8. 
C) anterior rami of spinal nerves C1-C4. 
D) anterior rami of spinal nerves C3-C7. 
E) rami communicantes of spinal nerves C1-C7. 
A) posterior rami of spinal nerves C2-C6. 
B) posterior rami of spinal nerves C4-C8. 
C) anterior rami of spinal nerves C1-C4. 
D) anterior rami of spinal nerves C3-C7. 
E) rami communicantes of spinal nerves C1-C7.

Question 8

Where the sciatic nerve splits,it branches directly to the

Accepted Answer

A) deep and superficial fibular nerves. 
B) tibial and common fibular nerves. 
C) femoral and obturator nerves. 
D) deep femoral and tibial nerves. 
E) popliteal and sural nerves. 
A) deep and superficial fibular nerves. 
B) tibial and common fibular nerves. 
C) femoral and obturator nerves. 
D) deep femoral and tibial nerves. 
E) popliteal and sural nerves.

Question 9

The plexus that supplies the upper limbs is the _________ plexus.

Accepted Answer

A) cervical 
B) brachial 
C) bronchiole 
D) lumbar 
E) sciatic 
A) cervical 
B) brachial 
C) bronchiole 
D) lumbar 
E) sciatic

Question 10

Which statement accurately describes spinal nerves

Accepted Answer

A) Most spinal nerves are motor nerves. 
B) Each spinal nerve is mixed in that it contains some sensory axons and some motor axons. 
C) All spinal nerves are sensory nerves. 
D) Odd-numbered spinal nerves are sensory and even-numbered spinal nerves are motor. 
E) Spinal nerves are central axons contained within the vertebral canal. 
A) Most spinal nerves are motor nerves. 
B) Each spinal nerve is mixed in that it contains some sensory axons and some motor axons. 
C) All spinal nerves are sensory nerves. 
D) Odd-numbered spinal nerves are sensory and even-numbered spinal nerves are motor. 
E) Spinal nerves are central axons contained within the vertebral canal.

Question 11

The embryonic feature that gives rise to the anterior and lateral horns of gray matter is the _____ plate.

Accepted Answer

A) basal 
B) alar 
C) ulnar 
D) anterior 
E) posterior 
A) basal 
B) alar 
C) ulnar 
D) anterior 
E) posterior

Question 12

The direct motor pathway originates in the

Accepted Answer

A) motor cortex of the cerebral cortex. 
B) superior colliculus of the midbrain. 
C) vestibular nuclei of the brainstem. 
D) reticular formation of the brainstem. 
A) motor cortex of the cerebral cortex. 
B) superior colliculus of the midbrain. 
C) vestibular nuclei of the brainstem. 
D) reticular formation of the brainstem.

Question 13

This figure shows a cross section of a vertebra and the spinal cord.What structure does number 1 indicate

Accepted Answer

A) Epidural space 
B) Pia mater 
C) Subarachnoid space 
D) Central canal 
E) Dura mater 
A) Epidural space 
B) Pia mater 
C) Subarachnoid space 
D) Central canal 
E) Dura mater

Question 14

-This figure shows spinal nerve branches.What structures are indicated by number 4

Accepted Answer

A) Anterior rami 
B) Posterior rami 
C) Rami communicantes 
D) Sympathetic trunk ganglia 
E) Posterior root ganglia 
A) Anterior rami 
B) Posterior rami 
C) Rami communicantes 
D) Sympathetic trunk ganglia 
E) Posterior root ganglia

Question 15

Late one night you are leaving the science building during a snowstorm.As you approach your car,your right foot suddenly slips on a patch of ice.Your left leg immediately stiffens as you try to regain your balance.The reflex action you relied upon is a(n)

Accepted Answer

A) unilateral reflex. 
B) ipsilateral reflex. 
C) contralateral reflex. 
D) voluntary reflex. 
E) None of the choices is correct. 
A) unilateral reflex. 
B) ipsilateral reflex. 
C) contralateral reflex. 
D) voluntary reflex. 
E) None of the choices is correct.

Question 16

Following an injury to his arm,a patient complains that he has no sensations from the thumb,index finger,middle finger,and part of the ring finger.What nerve do you suspect to be damaged

Accepted Answer

A) Median nerve 
B) Radial nerve 
C) Musculocutaneous nerve 
D) Ulnar nerve 
E) Axillary nerve 
A) Median nerve 
B) Radial nerve 
C) Musculocutaneous nerve 
D) Ulnar nerve 
E) Axillary nerve

Question 17

This structure contains unmyelinated axons and serves as a communication route between the right and left sides of the gray matter in the spinal cord.

Accepted Answer

A) Gray commissure 
B) White commissure 
C) Lateral commissure 
D) Posterior commissure 
E) Denticulate ligaments 
A) Gray commissure 
B) White commissure 
C) Lateral commissure 
D) Posterior commissure 
E) Denticulate ligaments

Question 18

-This figure shows neuron pathways and nuclei locations.What type of nuclei does number 2 indicate

Accepted Answer

A) Somatic motor nuclei 
B) Autonomic motor nuclei 
C) Visceral sensory nuclei 
D) Somatic sensory nuclei 
E) None of the choices is correct. 
A) Somatic motor nuclei 
B) Autonomic motor nuclei 
C) Visceral sensory nuclei 
D) Somatic sensory nuclei 
E) None of the choices is correct.

Question 19

-This figure shows a cross section of the spinal cord.What structure does number 1 indicate

Accepted Answer

A) Lateral horn 
B) Anterior horn 
C) Gray commissure 
D) Posterior horn 
E) Posterior funiculus 
A) Lateral horn 
B) Anterior horn 
C) Gray commissure 
D) Posterior horn 
E) Posterior funiculus

Question 20

An individual tract within the spinal cord contains either sensory nerve signals or motor nerve signals only.

Accepted Answer

A) True 
 B)False

Exam 14: Nervous System: Spinal Cord and Spinal Nerves

Following an injury to his arm,a patient complains that he has no sensations from his "pinky." You suspect that he has damaged the

Each side of the spinal cord gives rise to _____ cervical nerves.

The fasciculus cuneatus is part of the

The neurons that directly innervate skeletal muscles are called

Motor pathways are also called ascending pathways.

The lateral corticospinal tracts include a ________ of the upper motor neuron axons that pass through the medulla,and they govern control of ___________.

The cervical plexus is formed by the

Where the sciatic nerve splits,it branches directly to the

The plexus that supplies the upper limbs is the _________ plexus.

Which statement accurately describes spinal nerves

The embryonic feature that gives rise to the anterior and lateral horns of gray matter is the _____ plate.

The direct motor pathway originates in the

This figure shows a cross section of a vertebra and the spinal cord.What structure does number 1 indicate

-This figure shows spinal nerve branches.What structures are indicated by number 4

Late one night you are leaving the science building during a snowstorm.As you approach your car,your right foot suddenly slips on a patch of ice.Your left leg immediately stiffens as you try to regain your balance.The reflex action you relied upon is a(n)

Following an injury to his arm,a patient complains that he has no sensations from the thumb,index finger,middle finger,and part of the ring finger.What nerve do you suspect to be damaged

This structure contains unmyelinated axons and serves as a communication route between the right and left sides of the gray matter in the spinal cord.

-This figure shows neuron pathways and nuclei locations.What type of nuclei does number 2 indicate

-This figure shows a cross section of the spinal cord.What structure does number 1 indicate

An individual tract within the spinal cord contains either sensory nerve signals or motor nerve signals only.

The Sciences of Anatomy and Physiology

Atoms,Ions,and Molecules

Energy,Chemical Reactions,and Cellular Respiration

Biology of the Cell

Tissue Organization

Integumentary System

Skeletal System: Bone Structure and Function

Skeletal System: Axial and Appendicular Skeleton

Skeletal System: Articulations

Muscle Tissue

Muscular System: Axial and Appendicular Muscles

Nervous System: Nervous Tissue

Nervous System: Brain and Cranial Nerves

Nervous System: Autonomic Nervous System

Nervous System: Senses

Endocrine System

Cardiovascular System: Blood

Cardiovascular System: Heart

Cardiovascular System: Vessels and Circulation

Lymphatic System

Immune System and the Bodys Defense

Respiratory System

Urinary System

Fluid and Electrolytes

Digestive System

Nutrition and Metabolism

Reproductive System

Development,Pregnancy,and Heredity

Filters

The lateral corticospinal tracts include a of the upper motor neuron axons that pass through the medulla,and they govern control of ___.