View of the posterior abdominal wall to show the muscles and the nerves of the lumbo sacral plexus.

Muscles of the Abdominal Wall

View of the posterior abdominal wall to show the muscles and the nerves of the lumbo sacral plexus.

Diagram to show the changes in the sternum, diaphragm, and abdominal wall in respiration. Labels: A, inspiration; b, expiration; Tr, trachea; St, sternum; D, diaphragm; Ab, abdominal wall. The shaded part is to indicate the stationary air

Changes during Respiration

Diagram to show the changes in the sternum, diaphragm, and abdominal wall in respiration. Labels: A,…