Transcript O I A - BEHS Science

OIA
Head
http://www.explosm.net/comics/69
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Epicranius
• O: Occipital Bone
• I: Skin/Muscles
around the Eye
• A: Raises Eyebrows
Orbicularis Oculi
• O: Maxillary and
Frontal Bone
• I: Skin around the eye
• A: Closes Eye
An unusual case of proptosis
• An open biopsy
through the skin
crease of the right
eye revealed an
uncapsulated orange
coloured lesion
between the
orbicularis oculi and
the orbital septum
with infiltration of the
levator aponeurosis.
Orbicularis Oris
• O: Muscles near the
mouth
• I: Skin of lips
• A: Closes and
protrudes lips
Buccinator
• O: Maxilla and
Mandible
• I: Orbicularis Oris
• A: Compresses
Cheek inwards
Zygomaticus Major
• O: Zygomatic Bone
• I: Orbicularis Oris
• A: Raises corner of
the mouth
Platysma
• O: Fascia in upper
chest
• I: Lower border of the
Mandible
• A: Draws angle of
mouth downward
Masseter
• O: Lower border of
the Zygomatic arch
• I: Lateral Surface of
the Mandible
• A: Closes jaw
Temporalis
• O: Temporal Bone
• I: Coronoid
Process/lateral
surface of the
mandible
• A: Closes Jaw