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Exam 14: The Nervous System: The Spinal Cord and Spinal Nerves

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Question 41

Multiple Choice

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The blood vessels that supply the spinal cord are found in the ________.

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

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Question 42

Multiple Choice

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The median nerve ________.

A) arises from both the medial and posterior cords of the brachial plexus
B) arises from both the medial and lateral cords of the brachial plexus
C) arises from the posterior cord of the brachial plexus
D) innervates the pronators of the forearm
E) is a major nerve of the cervical plexus

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Question 43

Multiple Choice

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Spinal reflexes ________.

Figure 14.2 Using the above-referenced diagram of a posterior view of the spinal cord showing the meningeal layers, superficial landmarks, and distribution of gray and white matter, identify the specified labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label F.

If you bump the "funny bone" which nerve function is interrupted?

The ________ arises from the posterior cord of the brachial plexus.

Figure 14.7 Using the above-referenced diagrams of the anterior and posterior views of the upper limb, identify the specified labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label EE.

All of the following are true of fiber tracts in the spinal cord except ________.

Figure 14.8 Using the above-referenced diagrams of the lumbar and sacral plexuses, identify the specified labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label D.

Figure 14.3 Using the above-referenced diagram of a sectional view through the spinal cord and meninges showing the peripheral distribution of the spinal nerves, identify the specified labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label P.

The short head of the biceps femoris and the tibialis anterior muscles are innervated by the ________ nerve.

The brachial plexus is composed of cutaneous and muscular branches of the ventral rami of spinal nerves C1-C4.

The ________ nerve of the lumbar plexus is formed by ventral rami of T12 and L1, and innervates the internal and external oblique muscles.

Figure 14.1 Using the above- referenced diagrams of the superficial anatomy and orientation of the adult spinal cord (posterior view) and inferior views of cross-sections through representative segments of the spinal cord, showing the arrangement of gray and white matter, identify the specified labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label O.

Figure 14.2 Using the above-referenced diagram of a posterior view of the spinal cord showing the meningeal layers, superficial landmarks, and distribution of gray and white matter, identify the specified labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label H.

The largest nerve in the body that is formed from L4-S3 is the ________.

Figure 14.4 Using the above-referenced diagram of a typical peripheral nerve and its connective tissue wrappings, identify the specified labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label B.

Figure 14.8 Using the above-referenced diagrams of the lumbar and sacral plexuses, identify the specified labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label B.

Activation of a sensory neuron results in the conduction of action potentials into the spinal cord along a(n) ________.

Figure 14.4 Using the above-referenced diagram of a typical peripheral nerve and its connective tissue wrappings, identify the specified labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label C.