User:Abihoover/Thirteen-lined ground squirrel

Hibernation physiology
Thirteen-lined ground squirrels can survive in hibernation for over six months without food or water and special physiology allows them to do so. During torpor, these squirrels maintain hydration by redistributing and storing osmolytes in body compartments and when they enter a transient active-like state, osmolarity levels rise and pathways controlling hormone release activate while pathways controlling thirst remain suppressed. Thirteen-lined ground squirrels also suppress the cell cycle and control the expression of their cell cycle regulators in their liver during hibernation to conserve energy and during their active-like state, they are able to resume their cell cycle.