Adjective
(embryology) Forming muscle fibres; pertaining to myogenesis. [from 19th c.]
(physiology, medicine) Originating in muscle tissue; specifically, pertaining to contractile activity that is produced by the muscles independent of any neural mechanism. [from 19th c.]
Source: en.wiktionary.orgBeing myogenic, the heart's pace is maintained by pacemaker cells found in the sinoatrial node, located on the right atrium. Source: Internet
It is composed of myogenic muscular tissue associated with heart contraction features. Source: Internet