HELP ASAP i dont know what to do :)

Arrange these elements of the intrinsic conduction system in the order that a depolarizing impulse travels during a normal heartbeat. rank from first to last. do not overlap any tiles. view available hint(s) reset av nodeav bundleinternodal pathwaysbundle branchessa nodepurkinje fibers

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Which type of neuroglia is found outside of the brain?