The processes sensory information from all the senses (with the exception of smell) before transmitting it to the cerebral cortex.

Thalamus

Explanation:

The thalamus is one of the regions of the diencephalon (the others are the hypothalamus and the pineal gland). It is an important nerve center located in the human brain. Among its functions is the transmission of sensory impulses (from all senses except smell) from the spinal cord, cerebellum, brainstem and other brain regions to the cerebral cortex. In addition, it plays an important role in cognition (attainment of knowledge) and awareness and helps in regulating autonomous activities.

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.