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Questions and Answers
Which nerve innervates the serratus anterior muscle?
Which nerve innervates the serratus anterior muscle?
Which nerve innervates the rhomb minor, rhomboid major, and levator scapulae muscles?
Which nerve innervates the rhomb minor, rhomboid major, and levator scapulae muscles?
Which nerve innervates the supraspinatus and infraspinatus muscles?
Which nerve innervates the supraspinatus and infraspinatus muscles?
Which cord consists of the anterior divisions of the upper and middle trunks?
Which cord consists of the anterior divisions of the upper and middle trunks?
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Which nerve gives rise to the upper subscapular nerve, lower subscapular nerve, and axillary nerve?
Which nerve gives rise to the upper subscapular nerve, lower subscapular nerve, and axillary nerve?
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Which nerve innervates the muscles of the arm and originates from the spinal cord in the neck?
Which nerve innervates the muscles of the arm and originates from the spinal cord in the neck?
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Which trunk gives rise to the nerve to the subclavius and the suprascapular nerve?
Which trunk gives rise to the nerve to the subclavius and the suprascapular nerve?
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Which nerve does not give any branches?
Which nerve does not give any branches?
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Which cord consists of the posterior division of all trunks and gives rise to the axillary nerve?
Which cord consists of the posterior division of all trunks and gives rise to the axillary nerve?
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Which cord consists of the anterior division of the lower trunk and gives rise to the ulnar nerve?
Which cord consists of the anterior division of the lower trunk and gives rise to the ulnar nerve?
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Study Notes
Nerve Innervation
- The long thoracic nerve innervates the serratus anterior muscle.
- The dorsal scapular nerve innervates the rhomb minor, rhomboid major, and levator scapulae muscles.
- The suprascapular nerve innervates the supraspinatus and infraspinatus muscles.
Brachial Plexus
- The lateral cord consists of the anterior divisions of the upper and middle trunks.
- The posterior cord gives rise to the axillary nerve.
- The upper trunk gives rise to the nerve to the subclavius and the suprascapular nerve.
- The medial cord consists of the anterior division of the lower trunk and gives rise to the ulnar nerve.
Nerve Characteristics
- The radial nerve does not give any branches.
- The brachial plexus is responsible for innervating the muscles of the arm and originates from the spinal cord in the neck.
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Description
Test your knowledge of the nerve network originating from the spinal cord in the neck and innervating the muscles of the arm. Identify the segments and their corresponding muscle innervations.
