Questions: Part A The trapezius muscle may be separated into all of the following groups, except - lateral inferior middle superior Part B All fibers of the trapezius muscle are innervated by the scapular nerve coxal nerve axillary nerve spinal accessory nerve

Part A The trapezius muscle may be separated into all of the following groups, except - lateral inferior middle superior Part B All fibers of the trapezius muscle are innervated by the scapular nerve coxal nerve axillary nerve spinal accessory nerve
Transcript text: Part A The trapezius muscle may be separated into all of the following groups, except $\qquad$ - lateral inferior middle superior Part B All fibers of the trapezius muscle are innervated by the $\qquad$ scapular nerve coxal nerve axillary nerve spinal accessory nerve
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Solution

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Part A
The answer is the first one: lateral.
Explanation:

  • Lateral: The trapezius muscle is not typically divided into a "lateral" group.
  • Inferior: The trapezius muscle has an inferior (or lower) part.
  • Middle: The trapezius muscle has a middle part.
  • Superior: The trapezius muscle has a superior (or upper) part.

Part B
The answer is the fourth one: spinal accessory nerve.
Explanation:

  • Scapular nerve: This is not the correct nerve for innervating the trapezius muscle.
  • Coxal nerve: This nerve is not related to the trapezius muscle.
  • Axillary nerve: This nerve innervates the deltoid and teres minor muscles, not the trapezius.
  • Spinal accessory nerve: This is the correct nerve that innervates all fibers of the trapezius muscle.

In summary, for Part A, the trapezius muscle is not divided into a "lateral" group, and for Part B, all fibers of the trapezius muscle are innervated by the spinal accessory nerve.

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