Wing muscle (insect)

The wing muscles in insects are a group of wing-shaped muscles that attach to the side of the heart . They run within the diaphragm that separates the pericardial sinus , i.e. the space surrounding the heart, from the rest of the body cavity . When they contract, they cause the diaphragm to flatten and thus widen the pericardial sinus space and the heart, which enables diastole and the inflow of hemolymph into the heart. The wing muscles act as opponents of the actual muscles of the heart, which in the systole drive the hemolymph out of the heart through the aorta .

proof

• Volker Storch, Ulrich Welsch: Kükenthal zoological internship . 26th edition. Spektrum Akademischer Verlag, Heidelberg 2009, ISBN 978-3-8274-1998-9 , p. 248 .