motorium

noun

mo·​to·​ri·​um mō-ˈtōr-ē-əm 

plural motoria -ē-ə 

1

: the part of an organism and especially the part of its nervous system that is concerned with movement as distinguished from that concerned with sensation

2

: a differentiated cytoplasmic area in certain protozoans that acts as a coordinating center analogous to the brain of higher animals