WBR0496: Difference between revisions
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|MainCategory=Anatomy | |MainCategory=Anatomy | ||
|SubCategory=Musculoskeletal/Rheumatology, General Principles | |SubCategory=Musculoskeletal/Rheumatology, General Principles | ||
|MainCategory=Anatomy | |||
|MainCategory=Anatomy | |MainCategory=Anatomy | ||
|MainCategory=Anatomy | |MainCategory=Anatomy | ||
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[[File:WBR0496.jpg| 400px| center]] | [[File:WBR0496.jpg| 400px| center]] | ||
|Explanation=The above image shows a mid-shaft fracture of the humerus. This injury is associated with radial nerve damage. The radial nerve is responsible for the innervating the extensors of the wrist. | |Explanation=The above image shows a mid-shaft fracture of the humerus. This injury is associated with radial nerve damage. The radial nerve is responsible for the innervating the extensors of the wrist. | ||
|AnswerA=Adduction of the thumb | |AnswerA=Adduction of the thumb | ||
|AnswerAExp= | |AnswerAExp=The ulnar nerve is responsible for adduction of the thumb. | ||
|AnswerB=Forearm pronation | |AnswerB=Forearm pronation | ||
|AnswerBExp= | |AnswerBExp=The radial nerve is responsible for innervating the supinators of the forearm. | ||
|AnswerC=Raising the arm between 15 and 90 degrees | |AnswerC=Raising the arm between 15 and 90 degrees | ||
|AnswerCExp=The deltoid muscle is responsible for raising the arm between 15 and 90 degrees. The deltoid is innervated by the axillary nerve which can be lesioned by fractures at the surgical head of the humerus. | |||
|AnswerCExp= | |||
|AnswerD=Wrist extension | |AnswerD=Wrist extension | ||
|AnswerDExp= | |AnswerDExp=The radial nerve is responsible for innervating the extensors of the wrist. The radial nerve is damaged by midshaft fractures of the humerus such as the one pictured above. | ||
|AnswerE=Wrist flexion | |AnswerE=Wrist flexion | ||
|AnswerEExp= | |AnswerEExp=The median and ulnar nerves are responsible for wrist flexion. | ||
|EducationalObjectives=The radial nerve is responsible for innervating the extensors of the wrist. The radial nerve is damaged by midshaft fractures of the humerus such as the one pictured above. | |||
|References=First Aid 2014 page 413 | |||
|RightAnswer=D | |RightAnswer=D | ||
|WBRKeyword=Arm, Humerus, Fracture, Nerve, Radial Nerve, Brachial, Brachial plexus | |WBRKeyword=Arm, Humerus, Fracture, Nerve, Radial Nerve, Brachial, Brachial plexus | ||
|Approved=Yes | |Approved=Yes | ||
}} | }} |