english: They have two types of flight muscle: so-called power muscle, which is stretch-activated, which means that it activates itself and does not need to be controlled on a contraction-by-contraction basis by the nervous system.
non_english: İki çeşit uçuş kasına sahipler: Güç kası denilenler germe-etkilidir, yani kendisi etkinleşir ve sinir sisteminin kasılıp-gevşemelerle kontrolüne gerek yoktur.