A knife wound to the neck damages the posterior cord of the brachial plexus. Which of the following muscles would be most likely to be paralyzed?
Correct Answer: Deltoid
Description: The posterior cord supplies the axillary and radial nerves. Of the muscles listed, only the deltoid is supplied by one of these two nerves, specifically the axillary nerve. The flexor carpi ulnaris is supplied by the ulnar nerve.The flexor digitorum superficialis, the flexor pollicis brevis, and the palmaris longus are supplied by the median nerve. Ref: Moon D.A., Foreman K.B., Albeine K.H. (2011). Chapter 30. Shoulder and Axilla. In D.A. Moon, K.B. Foreman, K.H. Albeine (Eds), The Big Picture: Gross Anatomy.
Category:
Anatomy
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now