The second stage of Meaningful Use requires that healthcare providers use C-CDA document exchange regularly in care transitions and the CCD has been identified as the most appropriate document for this purpose.
The part of the brain that interprets smell is the olfactory bulb.  This brain structure is usually above the nasal cavity and below  frontal lobe.
An awareness of how the olfactory system works is helpful for understanding how smelling disorders affect the sense of smell. People detect odors because sensory receptors located in the nose carry smell sensations to the brain.