They've got a neurogenic heart, which has rhythmic depolarization that is certainly responsible for initiating heartbeats.[twenty five]: 653 Heartbeats originate in anxious tissue; innervated muscle mass cells trigger the guts to contract when stimulated by nerve impulses. The cardiac ganglion, which is made up of 9 neurons, attaches to the https://pennb222wph3.wikilinksnews.com/user