← Back to Session

Questions Answered: 180

Final Score 76%

137
43

Questions

  • Q1. X Incorrect
  • Q2. X Incorrect
  • Q3. Correct
  • Q4. Correct
  • Q5. Correct
  • Q6. X Incorrect
  • Q7. X Incorrect
  • Q8. Correct
  • Q9. Correct
  • Q10. Correct
  • Q11. X Incorrect
  • Q12. Correct
  • Q13. Correct
  • Q14. Correct
  • Q15. Correct
  • Q16. X Incorrect
  • Q17. Correct
  • Q18. Correct
  • Q19. Correct
  • Q20. Correct
  • Q21. Correct
  • Q22. Correct
  • Q23. X Incorrect
  • Q24. Correct
  • Q25. Correct
  • Q26. Correct
  • Q27. Correct
  • Q28. Correct
  • Q29. Correct
  • Q30. Correct
  • Q31. Correct
  • Q32. Correct
  • Q33. X Incorrect
  • Q34. Correct
  • Q35. Correct
  • Q36. Correct
  • Q37. Correct
  • Q38. Correct
  • Q39. Correct
  • Q40. Correct
  • Q41. Correct
  • Q42. X Incorrect
  • Q43. Correct
  • Q44. Correct
  • Q45. Correct
  • Q46. Correct
  • Q47. Correct
  • Q48. Correct
  • Q49. Correct
  • Q50. Correct
  • Q51. Correct
  • Q52. X Incorrect
  • Q53. Correct
  • Q54. X Incorrect
  • Q55. X Incorrect
  • Q56. Correct
  • Q57. Correct
  • Q58. X Incorrect
  • Q59. Correct
  • Q60. X Incorrect
  • Q61. X Incorrect
  • Q62. Correct
  • Q63. Correct
  • Q64. Correct
  • Q65. Correct
  • Q66. Correct
  • Q67. Correct
  • Q68. Correct
  • Q69. Correct
  • Q70. Correct
  • Q71. X Incorrect
  • Q72. Correct
  • Q73. Correct
  • Q74. Correct
  • Q75. Correct
  • Q76. Correct
  • Q77. X Incorrect
  • Q78. X Incorrect
  • Q79. X Incorrect
  • Q80. Correct
  • Q81. Correct
  • Q82. X Incorrect
  • Q83. X Incorrect
  • Q84. Correct
  • Q85. X Incorrect
  • Q86. Correct
  • Q87. Correct
  • Q88. Correct
  • Q89. Correct
  • Q90. X Incorrect
  • Q91. X Incorrect
  • Q92. Correct
  • Q93. X Incorrect
  • Q94. Correct
  • Q95. Correct
  • Q96. Correct
  • Q97. Correct
  • Q98. Correct
  • Q99. Correct
  • Q100. Correct
  • Q101. Correct
  • Q102. Correct
  • Q103. X Incorrect
  • Q104. Correct
  • Q105. Correct
  • Q106. X Incorrect
  • Q107. Correct
  • Q108. X Incorrect
  • Q109. Correct
  • Q110. Correct
  • Q111. Correct
  • Q112. Correct
  • Q113. Correct
  • Q114. X Incorrect
  • Q115. X Incorrect
  • Q116. Correct
  • Q117. Correct
  • Q118. Correct
  • Q119. Correct
  • Q120. Correct
  • Q121. X Incorrect
  • Q122. X Incorrect
  • Q123. Correct
  • Q124. Correct
  • Q125. Correct
  • Q126. Correct
  • Q127. X Incorrect
  • Q128. Correct
  • Q129. Correct
  • Q130. Correct
  • Q131. Correct
  • Q132. Correct
  • Q133. Correct
  • Q134. Correct
  • Q135. X Incorrect
  • Q136. Correct
  • Q137. Correct
  • Q138. Correct
  • Q139. Correct
  • Q140. Correct
  • Q141. Correct
  • Q142. Correct
  • Q143. X Incorrect
  • Q144. Correct
  • Q145. Correct
  • Q146. Correct
  • Q147. Correct
  • Q148. Correct
  • Q149. Correct
  • Q150. Correct
  • Q151. X Incorrect
  • Q152. Correct
  • Q153. Correct
  • Q154. Correct
  • Q155. Correct
  • Q156. X Incorrect
  • Q157. X Incorrect
  • Q158. Correct
  • Q159. Correct
  • Q160. Correct
  • Q161. Correct
  • Q162. Correct
  • Q163. Correct
  • Q164. Correct
  • Q165. X Incorrect
  • Q166. Correct
  • Q167. Correct
  • Q168. Correct
  • Q169. X Incorrect
  • Q170. X Incorrect
  • Q171. Correct
  • Q172. Correct
  • Q173. Correct
  • Q174. Correct
  • Q175. Correct
  • Q176. Correct
  • Q177. Correct
  • Q178. Correct
  • Q179. X Incorrect
  • Q180. X Incorrect

Anatomy

Lower Limb

Question 79 of 180

An unknown male is brought into the department after being struck by a lorry whilst crossing the road. Imaging shows extensive injuries in the pelvic region including trauma to the gluteus maximus. The gluteus maximus muscle primarily acts to produce which of the following movements:

Answer:

The gluteus maximus is the main extensor of the thigh at the hip joint and also acts to laterally rotate and abduct the thigh.

Table: Function and Innervation of the Gluteal Muscles

Muscle Function Innervation
Gluteus maximus Extension, lateral rotation and abduction at hip Inferior gluteal nerve
Gluteus medius Abduction and medial rotation at hip Superior gluteal nerve
Gluteus minimus Abduction and medial rotation at hip Superior gluteal nerve
Piriformis Lateral rotation and abduction at hip Branches from S1 and S2

Gluteus Maximus

The gluteus maximus is the main extensor of the thigh at the hip joint and also acts to laterally rotate and abduct the thigh. Through its insertion into the iliotibial tract, it also stabilises the knee and hip joints. The gluteus maximus is innervated by the inferior gluteal nerve.

Gluteus Medius and Gluteus Minimus

The gluteus medius and gluteus minimus act to abduct and medially rotate the thigh at the hip joint, and also act to secure the pelvis, reducing pelvic drop on the opposite swing side during walking. They are both innervated by the superior gluteal nerve.

Piriformis

The piriformis acts to abduct and laterally rotate the thigh at the hip joint. It is innervated by the nerve to the piriformis, originating from the sacral plexus (S1, S2).

The obturator internus, gemelli and quadratus femoris muscles act as synergistic femoral lateral rotators and hip stabilisers.

Modified by FRCEM Success. Original by Henry Vandyke Carter [Public domain], via Wikimedia Commons

Gluteal Muscles: Gluteus Maximus (red), Gluteus Medius (green), Gluteus Minimus (blue), Piriformis (yellow). (Image modified by FRCEM Success. Original by Henry Vandyke Carter [Public domain], via Wikimedia Commons)

Report A Problem

Is there something wrong with this question? Let us know and we’ll fix it as soon as possible.

Loading Form...

Close
  • 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

Join our Newsletter

Stay updated with free revision resources and exclusive discounts

©2017 - 2024 MRCEM Success