Question 823
{"accessible":false,"alternatives":[{"id":4165,"text":"C5"},{"id":4166,"text":"C6"},{"id":4167,"text":"C7"},{"id":4168,"text":"C8"}],"archived":false,"correctAlternativeId":4168,"explanation":"\u003cp\u003eThe musculocutaneous nerve originates from the lateral cord of the brachial plexus (C5, C6 and C7).\u0026nbsp;\u003c/p\u003e\u003cp\u003eC8 combines with T1 to form the inferior trunk. The inferior trunk gives off fibers to both the posterior and medial cords. Fibers from C8, therefore, contribute to the ulnar nerve, radial nerve and median nerve.\u003c/p\u003e\u003cp\u003e\u003c/p\u003e","id":823,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/1342","nextQuestionPath":"/articles/brachial-plexus/questions/813","relatedArticles":[{"id":24693,"title":"Musculocutaneous nerve","link":"/articles/musculocutaneous-nerve?lang=us"}],"alsoUsedIn":[{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Course - Melbourne - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-course-melbourne-2020/pages/397"},{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Course - Melbourne - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-course-melbourne-2019/pages/397"},{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Webinars - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-webinar-2022/pages/397"},{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Course - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-course-online/pages/397"},{"id":397,"kind":"Course","title":"Medical Imaging Anatomy Webinar Series - page 397","link":"https://radiopaedia.org/courses/medical-imaging-anatomy-webinar-series/pages/397"}],"stem":"\u003cp\u003eWhich of the following nerve roots does \u003cstrong\u003eNOT\u003c/strong\u003e contribute to the musculocutaneous nerve?\u003c/p\u003e\u003cp\u003e\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/823"}],"attemptsPercentages":[{"alternativeId":"4167","percentage":3},{"alternativeId":"4166","percentage":2},{"alternativeId":"4165","percentage":17},{"alternativeId":"4168","percentage":78}],"promptToLogin":false,"questionManager":false,"articleId":"brachial-plexus"}