Section through a human head. Computer coloured axial (transverse) slice through the healthy human head of a male, showing the brain and ear canal. This is part of the Visible Human Project. The nose is at top, with maxillary sinuses coloured yellow. At centre right is the black ear canal leading to the eardrum. At centre is the brainstem (oval inside red); folded cerebellum tissue of the hindbrain is seen at lower centre (purple). The cerebellum maintains posture and balance, and coordinates muscle movement. The Visible Human Project is a US project to archive both a male and female body. Each body is CT and MRI scanned, then sectioned, for medical research and education.