They have a neurogenic heart, that has rhythmic depolarization that may be answerable for initiating heartbeats.[twenty five]: 653 Heartbeats originate in nervous tissue; innervated muscle cells result in the center to contract when stimulated by nerve impulses. The cardiac ganglion, which includes nine neurons, attaches to the dorsal wall of https://alicew000pgw9.tnpwiki.com/user