Brain Architecture Right and left hemispheres Hemispheres are connected by the corpus callosum Brain is covered by a membrane called the cortex Bumps on the brain are called gyri, depressions are fissuresBrain Architecture • Right and left hemispheres • Hemispheres are connected by the corpus callosum • Brain is covered by a membrane called the cortex • Bumps on the brain are called gyri, depressions are fissures