once tsunade is dead, the name senju will disappear forever

[~Nemesis~]

Doubtful, but if the uchia dies its only right the Senju die tooo, then a new clan is created, to balance nature out. But Tsunade medical ninjutsu can possible allow her to have kids.

That's if she wants children.

 

[TrollingSage]

And so will the Uchiha if Sasuke dies. What's your point?