Peace, you left out

FORNIX..."a prominent bundle of axons interconnecting ipsilateral (i.e. same side) regions of certain limbic parts of the forebrain."

PHILTRUM... (Greek philtron, from philein, "to love; to kiss"), also known as the infranasal depression, is the vertical groove in the upper lip, formed where the nasomedial and maxillary processes meet during embryonic development."

The philtrum allows humans to express a much larger range of lip motions than would otherwise be possible, which enhances vocal and non-verbal communication.