ACTIVITY 1

ACTIVITY 1

ACTIVITY 1

by Ralph Andrei Ereso -
Number of replies: 0

  1. Platysma
    1. Origin: Fascia over deltoid and pectoralis major 
    2. Insertion: Mandible
    3. Action: Draws outer part of lower lip inferiorly and posteriorly
  2. Mentalis
    1. Origin: Mandible
    2. Insertion: Skin of chin
    3. Action: Elevates and protrudes lower lip and pulls skin of chin up
  3. Orbicularis Oris
    1. Origin: Muscle fibers surrounding the opening of the mouth
    2. Insertion: Skin at corner of mouth
    3. Action: closes and protrudes lips
  4. Corrugator supercilii
    1. Origin: Medial end of superciliary arch of frontal lobe
    2. Insertion: Skin of Eyebrow
    3. Action: Draws eyebrows inferiorly and wrinkles skin of forehead
  5. Orbicularis oculi
    1. Origin: Medial wall of orbit
    2. Insertion: circular path around orbit
    3. Action: closes eye
  6. Occipitofrontalis
    1. Origin: Epicranial aponeurosis
    2. Insertion: Skin superior to supraorbital margin
    3. Action: Draws scalp anteriorly, raises eyebrow, wrinkles skin of forehead horizontally