Question 1

Discuss the clinical significance of dermatomes.

Accepted Answer

Knowing which spinal cord segments suppl

Question 2

Describe the basic anatomy of a spinal nerve plexus.

Accepted Answer

Axons from the anterior rami of spinal n

Question 3

Which of the nerves in this diagram only have anterior and posterior rami branches and do not form plexuses?

Accepted Answer

A) A 
B) B 
C) D 
D) E 
E) G 
A) A 
B) B 
C) D 
D) E 
E) G

Question 4

In reciprocal innervation of the tendon reflex stimulation of afferent fibers causes

Accepted Answer

A) inhibition of effector muscles 
B) inhibition of antagonist muscles 
C) excitation of effector muscles 
D) excitation of antagonist muscles 
E) excitation of muscles on the contralateral side 
A) inhibition of effector muscles 
B) inhibition of antagonist muscles 
C) excitation of effector muscles 
D) excitation of antagonist muscles 
E) excitation of muscles on the contralateral side

Question 5

In this diagram,which layer is the thickest protective covering?

Accepted Answer

A) E 
B) F 
C) G 
D) H 
E) I 
A) E 
B) F 
C) G 
D) H 
E) I

Question 6

In this diagram where would the medial reticulospinal tract be located?

Accepted Answer

A) B 
B) C 
C) H 
D) I 
E) F 
A) B 
B) C 
C) H 
D) I 
E) F

Question 7

In this diagram,where is the avascular structure located between the subdural and subarachnoid space?

Accepted Answer

A) E 
B) F 
C) G 
D) H 
E) I 
A) E 
B) F 
C) G 
D) H 
E) I

Question 8

Which of the nerves in this diagram innervates muscles that extend the toes and if damaged results in foot drop (plantar flexion)?

Accepted Answer

A) A 
B) C 
C) F 
D) E 
E) G 
A) A 
B) C 
C) F 
D) E 
E) G

Question 9

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

Question 10

In the 400 meter relay,runners handoff the baton to the person in front of them.The second runner in the relay team had to be replaced .They were unable to pronate their forearm to reach behind for the baton because of injury to their brachial plexus.What is the most likely site of their injury?

Accepted Answer

A) Dorsal scapular nerve 
B) Intercostal nerve 
C) Phrenic nerve 
D) Median nerve 
E) Radial nerve 
A) Dorsal scapular nerve 
B) Intercostal nerve 
C) Phrenic nerve 
D) Median nerve 
E) Radial nerve

Question 11

Which of the following structures travels from the area labeled D in the diagram?

Accepted Answer

A) obturator nerve 
B) phrenic nerve 
C) long thoracic nerve 
D) thoracodorsal nerve 
E) lesser occipital nerve 
A) obturator nerve 
B) phrenic nerve 
C) long thoracic nerve 
D) thoracodorsal nerve 
E) lesser occipital nerve

Question 12

An individual suffers a stroke and looses control over their left arm.The individual is affected with__________paralysis.

Accepted Answer

A) diplegia 
B) monoplegia 
C) paraplegia 
D) hemiplegia 
E) quadriplegia 
A) diplegia 
B) monoplegia 
C) paraplegia 
D) hemiplegia 
E) quadriplegia

Question 13

A typical spinal nerve has how many connections to the spinal cord?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 14

Which spinal meninges is composed of collagen fibers arranged in an irregular pattern that is very strong?

Accepted Answer

A) Arachnoid mater 
B) Dura mater. 
C)  Epineurium 
D) Pia mater 
A) Arachnoid mater 
B) Dura mater. 
C)  Epineurium 
D) Pia mater

Question 15

Which of the labeled structures allows doctors to safely introduce antibiotics or anesthetics and measure CSF pressure ?

Accepted Answer

A) A 
B) E 
C) D 
D) G 
E) H 
A) A 
B) E 
C) D 
D) G 
E) H

Question 16

Which of the following parts of a reflex arc monitors the rectus femoris muscle stretching?

Accepted Answer

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

Question 17

A patient who has loss of pin prick sensation starting at the level of the nipple and downward on the right side would have a lesion in the spinal cord at which level?

Accepted Answer

A) C7-C8 
B) T4-T5 
C) T6-T7 
D) T10-T12 
E) S1-S2 
A) C7-C8 
B) T4-T5 
C) T6-T7 
D) T10-T12 
E) S1-S2

Question 18

Which branch of a spinal nerve serves the deep muscles and skin of the posterior surface of the trunk?

Accepted Answer

A) Meningeal branch 
B) Rami communicantes 
C) Intercostal nerve 
D) Posterior ramus 
E) Anterior ramus 
A) Meningeal branch 
B) Rami communicantes 
C) Intercostal nerve 
D) Posterior ramus 
E) Anterior ramus

Question 19

Which of the following parts of a reflex arc can be monosynaptic or polysynaptic?

Accepted Answer

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

Question 20

What parts of a neuron within a nerve is/are wrapped in a protective endoneurium?
1)Myelinated axon
2)Unmyelinated axon
3)Dendrites

Accepted Answer

A) 1 only 
B) 2 only 
C) 3 only 
D) Both 1 and 2 
E) 1,2 and 3 
A) 1 only 
B) 2 only 
C) 3 only 
D) Both 1 and 2 
E) 1,2 and 3

Exam 13: The Spinal Cord and Spinal Nerves

Discuss the clinical significance of dermatomes.

Describe the basic anatomy of a spinal nerve plexus.

Which of the nerves in this diagram only have anterior and posterior rami branches and do not form plexuses?

In reciprocal innervation of the tendon reflex stimulation of afferent fibers causes

In this diagram,which layer is the thickest protective covering?

In this diagram where would the medial reticulospinal tract be located?

In this diagram,where is the avascular structure located between the subdural and subarachnoid space?

Which of the nerves in this diagram innervates muscles that extend the toes and if damaged results in foot drop (plantar flexion)?

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

In the 400 meter relay,runners handoff the baton to the person in front of them.The second runner in the relay team had to be replaced .They were unable to pronate their forearm to reach behind for the baton because of injury to their brachial plexus.What is the most likely site of their injury?

Which of the following structures travels from the area labeled D in the diagram?

An individual suffers a stroke and looses control over their left arm.The individual is affected with__________paralysis.

A typical spinal nerve has how many connections to the spinal cord?

Which spinal meninges is composed of collagen fibers arranged in an irregular pattern that is very strong?

Which of the labeled structures allows doctors to safely introduce antibiotics or anesthetics and measure CSF pressure ?

Which of the following parts of a reflex arc monitors the rectus femoris muscle stretching?

A patient who has loss of pin prick sensation starting at the level of the nipple and downward on the right side would have a lesion in the spinal cord at which level?

Which branch of a spinal nerve serves the deep muscles and skin of the posterior surface of the trunk?

Which of the following parts of a reflex arc can be monosynaptic or polysynaptic?

What parts of a neuron within a nerve is/are wrapped in a protective endoneurium? 1)Myelinated axon 2)Unmyelinated axon 3)Dendrites

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: The Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

Nervous Tissue

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor, and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Nutrition

The Urinary System

Fluid, Electrolyte, and Acidbase Homeostasis

The Reproductive Systems

Development and Inheritance

Filters