Monday, May 14, 2012

Artistic Anatomy Part 5: Mouth Muscles I

Links for the previous four parts:

The mouth muscles can be tricky so I've broken them down into three sections (above the mouth, at the mouth and below the mouth). Here's what's above the mouth:


Quadratus labii superioris 
L. quadratus—square-shaped [muscle] + labii—of lip

angular head (levator labii superioris alaeque nasi)
origin: inner margin of orbit
insertion: nasolabial furrow and ala (wing of the nose)
action: raises the ala and upper lip







infraorbital head (levator labii superioris)
origin: lower margin of orbit
insertion: nasolabial furrow
action: raises the ala and upper lip






zygomatic head (zygomaticus inferioris)
origin: zygomatic bone behind the suture
insertion: nasolabial furrow
action: raises the ala and upper lip





And all together now!



Next: the muscles around the mouth.







No comments:

Post a Comment