ACTIVITY 1

ACTIVITY 1

ACTIVITY 1

by Corel Lee -
Number of replies: 0

  1. Risorius

    1. Origin: Fascia over parotid gland

    2. Insertion: Skin at angle of mouth

    3. Action: Draws angle of mouth laterally as in grimacing

  2. Mentalis

    1. Origin: Mandible

    2. Insertion: Skin of chin

    3. Action: Elevates and protrudes lower lip as in pouting

  3. Orbicularis oris

    1. Origin: Muscle fibers surrounding mouth opening

    2. Insertion: Skin at corner of mouth

    3. Action: Closes and protrudes lips as in kissing

  4. Corrugator supercilii

    1. Origin: Medial end of superciliary arch of frontal bone.

    2. Insertion: Skin of eyebrow

    3. Action: Draws eyebrow inferiorly and wrinkles skin of forehead vertically as in frowning

  5. Orbicularis oculi

    1. Origin: Medial wall of orbit

    2. Insertion: Circular path around orbit

    3. Action: Closes eye

  6. Occipitofrontalis (frontal belly)

    1. Origin: Epicranial aponeurosis

    2. Insertion: Skin superior to supraorbital margin

    3. Action: Wrinkles skin of forehead horizontally, raises eyebrows, and draws scalp anteriorly