← Back to Session
Time Completed: 00:00:05
Final Score 0%
0
180
Questions
- Q1. Skipped
- Q2. Skipped
- Q3. Skipped
- Q4. Skipped
- Q5. Skipped
- Q6. Skipped
- Q7. Skipped
- Q8. Skipped
- Q9. Skipped
- Q10. Skipped
- Q11. Skipped
- Q12. Skipped
- Q13. Skipped
- Q14. Skipped
- Q15. Skipped
- Q16. Skipped
- Q17. Skipped
- Q18. Skipped
- Q19. Skipped
- Q20. Skipped
- Q21. Skipped
- Q22. Skipped
- Q23. Skipped
- Q24. Skipped
- Q25. Skipped
- Q26. Skipped
- Q27. Skipped
- Q28. Skipped
- Q29. Skipped
- Q30. Skipped
- Q31. Skipped
- Q32. Skipped
- Q33. Skipped
- Q34. Skipped
- Q35. Skipped
- Q36. Skipped
- Q37. Skipped
- Q38. Skipped
- Q39. Skipped
- Q40. Skipped
- Q41. Skipped
- Q42. Skipped
- Q43. Skipped
- Q44. Skipped
- Q45. Skipped
- Q46. Skipped
- Q47. Skipped
- Q48. Skipped
- Q49. Skipped
- Q50. Skipped
- Q51. Skipped
- Q52. Skipped
- Q53. Skipped
- Q54. Skipped
- Q55. Skipped
- Q56. Skipped
- Q57. Skipped
- Q58. Skipped
- Q59. Skipped
- Q60. Skipped
- Q61. Skipped
- Q62. Skipped
- Q63. Skipped
- Q64. Skipped
- Q65. Skipped
- Q66. Skipped
- Q67. Skipped
- Q68. Skipped
- Q69. Skipped
- Q70. Skipped
- Q71. Skipped
- Q72. Skipped
- Q73. Skipped
- Q74. Skipped
- Q75. Skipped
- Q76. Skipped
- Q77. Skipped
- Q78. Skipped
- Q79. Skipped
- Q80. Skipped
- Q81. Skipped
- Q82. Skipped
- Q83. Skipped
- Q84. Skipped
- Q85. Skipped
- Q86. Skipped
- Q87. Skipped
- Q88. Skipped
- Q89. Skipped
- Q90. Skipped
- Q91. Skipped
- Q92. Skipped
- Q93. Skipped
- Q94. Skipped
- Q95. Skipped
- Q96. Skipped
- Q97. Skipped
- Q98. Skipped
- Q99. Skipped
- Q100. Skipped
- Q101. Skipped
- Q102. Skipped
- Q103. Skipped
- Q104. Skipped
- Q105. Skipped
- Q106. Skipped
- Q107. Skipped
- Q108. Skipped
- Q109. Skipped
- Q110. Skipped
- Q111. Skipped
- Q112. Skipped
- Q113. Skipped
- Q114. Skipped
- Q115. Skipped
- Q116. Skipped
- Q117. Skipped
- Q118. Skipped
- Q119. Skipped
- Q120. Skipped
- Q121. Skipped
- Q122. Skipped
- Q123. Skipped
- Q124. Skipped
- Q125. Skipped
- Q126. Skipped
- Q127. Skipped
- Q128. Skipped
- Q129. Skipped
- Q130. Skipped
- Q131. Skipped
- Q132. Skipped
- Q133. Skipped
- Q134. Skipped
- Q135. Skipped
- Q136. Skipped
- Q137. Skipped
- Q138. Skipped
- Q139. Skipped
- Q140. Skipped
- Q141. Skipped
- Q142. Skipped
- Q143. Skipped
- Q144. Skipped
- Q145. Skipped
- Q146. Skipped
- Q147. Skipped
- Q148. Skipped
- Q149. Skipped
- Q150. Skipped
- Q151. Skipped
- Q152. Skipped
- Q153. Skipped
- Q154. Skipped
- Q155. Skipped
- Q156. Skipped
- Q157. Skipped
- Q158. Skipped
- Q159. Skipped
- Q160. Skipped
- Q161. Skipped
- Q162. Skipped
- Q163. Skipped
- Q164. Skipped
- Q165. Skipped
- Q166. Skipped
- Q167. Skipped
- Q168. Skipped
- Q169. Skipped
- Q170. Skipped
- Q171. Skipped
- Q172. Skipped
- Q173. Skipped
- Q174. Skipped
- Q175. Skipped
- Q176. Skipped
- Q177. Skipped
- Q178. Skipped
- Q179. Skipped
- Q180. Skipped
Anatomy
Upper Limb
Question 47 of 180
Your consultant asks you to examine a patient he has seen. He suspects he may have a traumatic musculocutaneous nerve injury. The musculocutaneous nerve supplies which of the following groups of muscles:
Answer:
The musculocutaneous nerve innervates all the muscles in the anterior compartment of the arm (the coracobrachialis, the biceps brachii and the brachialis muscles).Musculocutaneous Nerve
Anatomy / Upper Limb / Anterior Arm / Innervation of Upper Limb
Last Updated: 8th April 2019
The musculocutaneous nerve originates from the lateral cord of the brachial plexus, receiving fibres from C5 - C7.
Table: Anatomical Overview of the Musculocutaneous Nerve
| Nerve | Musculocutaneous |
|---|---|
| Nerve roots | C5 – C7 |
| Plexus cords | Lateral |
| Motor Supply | Anterior compartment of arm (coracobrachialis, biceps brachii, brachialis) |
| Sensory supply | Lateral forearm (via the lateral cutaneous nerve of the forearm) |
Anatomical Course
Musculocutaneous Nerve. (Image by Henry Vandyke Carter [Public domain], via Wikimedia Commons)
Function
It innervates all of the muscles in the anterior compartment of the arm (the coracobrachialis, the biceps brachii and the brachialis muscles) and gives rise to the lateral cutaneous nerve of the forearm, which supplies the skin on the lateral surface of the forearm.
Report A Problem
Is there something wrong with this question? Let us know and we’ll fix it as soon as possible.
Loading Form...
- Biochemistry
- Blood Gases
- Haematology
| Biochemistry | Normal Value |
|---|---|
| Sodium | 135 – 145 mmol/l |
| Potassium | 3.0 – 4.5 mmol/l |
| Urea | 2.5 – 7.5 mmol/l |
| Glucose | 3.5 – 5.0 mmol/l |
| Creatinine | 35 – 135 μmol/l |
| Alanine Aminotransferase (ALT) | 5 – 35 U/l |
| Gamma-glutamyl Transferase (GGT) | < 65 U/l |
| Alkaline Phosphatase (ALP) | 30 – 135 U/l |
| Aspartate Aminotransferase (AST) | < 40 U/l |
| Total Protein | 60 – 80 g/l |
| Albumin | 35 – 50 g/l |
| Globulin | 2.4 – 3.5 g/dl |
| Amylase | < 70 U/l |
| Total Bilirubin | 3 – 17 μmol/l |
| Calcium | 2.1 – 2.5 mmol/l |
| Chloride | 95 – 105 mmol/l |
| Phosphate | 0.8 – 1.4 mmol/l |
| Haematology | Normal Value |
|---|---|
| Haemoglobin | 11.5 – 16.6 g/dl |
| White Blood Cells | 4.0 – 11.0 x 109/l |
| Platelets | 150 – 450 x 109/l |
| MCV | 80 – 96 fl |
| MCHC | 32 – 36 g/dl |
| Neutrophils | 2.0 – 7.5 x 109/l |
| Lymphocytes | 1.5 – 4.0 x 109/l |
| Monocytes | 0.3 – 1.0 x 109/l |
| Eosinophils | 0.1 – 0.5 x 109/l |
| Basophils | < 0.2 x 109/l |
| Reticulocytes | < 2% |
| Haematocrit | 0.35 – 0.49 |
| Red Cell Distribution Width | 11 – 15% |
| Blood Gases | Normal Value |
|---|---|
| pH | 7.35 – 7.45 |
| pO2 | 11 – 14 kPa |
| pCO2 | 4.5 – 6.0 kPa |
| Base Excess | -2 – +2 mmol/l |
| Bicarbonate | 24 – 30 mmol/l |
| Lactate | < 2 mmol/l |
Are you sure you wish to end this session?
