Atlas Musculature: Area 1,10,11

: Triangular  fanning out from the chin

Abb. 12: Musculus depressor anguli oris

Fixation:

Origo: From chin tip to first molar interlaced with other muscles in the mouth corner out of chin skin and bone insertion , part to upper lip.

Insertio Interlacing at the mouth corner wit neighbouring muscle tracks, partially to the upper lip.

Path: Converging upwards to the pulling the mouth corners up. Linking with the  Mm. depressor labii inferioris (11) and Platysma; horizontal chin fold when  marked collateral connection, as well M. transversus mentalis = Double chin..

Action: Mouth corners down lateral sideways Mouth corner fold.

Specialities: Weakening contact pressure in the premolar/canine; grief, disaffection; in combination with hyperactivity M. orbicularis (4) intensified pressure on Mandibula front.

Abb. 13: Musculus depressor labii inferioris

Fixation:

Origo: Bone below Foramen mentale

Insertio: Superficial fibres in lower lip, radiating deep into the Orbicularis oris (4)

Path: slanting up and medianwards, in its origin connected with the Platysma (13)

Action: Upper lip drawn down-sideways, along with the chin region downwards antagonistic M. mentalis (12), synergistic attachment of Orbicularis

Specialities: Discharging of the Mandibula region Antagonist to the M.mentalis!

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,E'-EXERCISE (Strengthening)