They've a neurogenic heart, which has rhythmic depolarization that is definitely to blame for initiating heartbeats.[25]: 653 Heartbeats originate in nervous tissue; innervated muscle mass cells trigger the center to deal when stimulated by nerve impulses. The cardiac ganglion, which consists of 9 neurons, attaches to the dorsal wall of https://duket887hxo5.wikifordummies.com/user