medulla oblongata morphology trait inferior olivary complex morphology trait Any measurable or observable characteristic related to the shape, structure, color, or pattern of the capsule-shaped structure in the ventral medulla located just lateral and dorsal to the medullary pyramids; neurons in the inferior olivary nucleus are the source of climbing fiber input to the cerebellar cortex and have been implicated in various functions, such as learning and timing of movements. inferior olivary nucleus morphology trait inferior olive morphology trait VT:0003684 Trait.ontology oliva morphology trait