In humans and in other higher vertebrates, the undergoes the greatest growth during development.

 Telencephalon

Explanation:

The cerebrum is also known as telencephalon. It is a major part of the brain that houses the cerebral cortex (of both cerebral hemispheres), varying subcortical structures, plus the hippocampus, basal ganglia, and olfactory bulb. In the human brain, it is the uppermost zone of the central nervous system.

The inferior boundaries of the telencephalon are basically located at the diencephalon (e.g. thalamus and hypothalamus) and the brainstem.

The telencephalon houses the BIGGEST part of the brain, the CEREBRUM.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

that is wrong, its not thymus.