A 17-year-old boy fell from his motorcycle and complains of numbness of lateral pa of the arm. Examination reveals the axillary nerve is severed. Which of the following types of axons is most likely spared?: (A) Postganglionic sympathetic axons, (B) Somatic afferent axons, (C) Preganglionic sympathetic axons, (D) General somatic efferent axons
Answer is C. The axillary nerve contains no preganglionic sympathetic general visceral efferent (GVE) fibres, but it contains postganglionic sympathetic GVE fibres. It also contains general somatic afferent (GSA), general somatic efferent (GSE), and general visceral afferent (GVA) fibres.