At the head of the planarian there is a brain under the eyespots. From the brain, there are two nerve cords, which connect at the tail. There are many transverse nerves connected to the nerve cords, which make it look like a ladder. With a ladder-like nerve system it is able to respond in a coordinated manner.
Adventure mode. From Diablo Wiki. Adventure Mode or AM is the primary end game type of game mode introduced into Diablo 3 in the Reaper of Souls expansion pack. Campaign Mode or Story Mode is the other primary game mode, where players must progress through the acts in order, complete quests, talk to NPCs, watch cut scenes, etc.
Diablo (video game) Diablo is an action role-playing hack and slash video game developed by Blizzard North and released by Blizzard Entertainment on December 31, 1996. Set in the fictional Kingdom of Khanduras, located in the mortal realm, Diablo has the player take control of a lone hero battling to rid the world of Diablo, the Lord of Terror.