has part has part has_part characteristic of part of has modifier cerebellum development abnormal cerebellum morphology abnormal cerebellum development MP:0000854 aberrant or incomplete differentiation of the part of the metencephalon that lies dorsal to the pons and medulla behind the brain stem and controls balance for walking and standing, modulates the force and range of movement and is involved in the learning of motor skills MPheno.ontology abnormal cerebellar development abnormal hindbrain development quality abnormal