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Questions and Answers
Which nerve is the only one that passes through the carpal tunnel?
At what point does the median nerve enter the arm from the axilla?
Where does the median nerve originate from?
Where does the median nerve pass medial to the brachial artery?
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Which muscle receives a branch from the median nerve immediately above the elbow joint?
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Study Notes
Carpal Tunnel and Median Nerve
- The median nerve is the only nerve that passes through the carpal tunnel.
Origin and Path of Median Nerve
- The median nerve originates from the brachial plexus.
- The median nerve enters the arm from the axilla (armpit).
Relationship with Brachial Artery
- The median nerve passes medial to the brachial artery.
Muscle Innervation
- The pronator teres muscle receives a branch from the median nerve immediately above the elbow joint.
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Description
lexus is a network of nerves that originates from spinal cord in the neck and innervates the muscles of the arm. It is divided into various segments: - Dorsal scapular nerve (C5) innervates the rhomb minor, rhomboid major, and levator scapulae muscles. - Long thoracic nerve (C5, C, C7) innervates the serratus anterior muscle. - Upper trunk (C5, C6) gives rise to the nerve to the subclavius the suprascapular nerve, which innervates the supraspinatus and infraspinatus muscles. - Middle trunk (C7) does not give any branches. - Lower trunk (C8, T1) gives rise to the medial pectoral nerve, medial cutaneous nerves of the arm and forearm, ulnar nerve, and medial root of the median nerve. - Lateral cord consists of the anterior divisions of the upper and middle trunks. It gives rise to the musculocutaneous nerve, lateral pal nerve, and of the median nerve. - Medial cord consists of the anterior division of the lower trunk and gives the medial pectoral nerve, medial cutaneous nerves of the arm and forearm, ulnar nerve, and medial root of the median nerve. - Posterior cord consis
