Which muscle is irritated by inflamed retrocaecal appendix -
Ans. is 'a' i.e., Psoas major Abdominal pain in appendicitis:* In children with abdominal pain, who hold their right hip in a flexed position to obtain relief from the pain, one should suspect retrocaecal appendicitis causing irritation of the psoas muscle.
Psoas major
Gluteus maximus
Quadratus femoris
Obturator internus
Vermiform Appendix