ACTIVITY 1

PERALTA, Arianne Pauline A._Activity 1

PERALTA, Arianne Pauline A._Activity 1

by Arianne Pauline Peralta -
Number of replies: 0

  1. Depressor anguli oris

    1. Origin: mental tubercle and oblique line of mandible (continuous with platysma muscle)

    2. Insertion: modiolus

    3. Action: depresses the angle of the mouth and pulls it slightly laterally; It facilitates expressing sadness and assists in opening the mouth.

  2. Mentalis

    1. Origin: incisive fossa of mandible

    2. Insertion: skin of chin

    3. Action: elevates, everts and protrudes lower lip, wrinkles skin of chin

  3. Orbicularis oris

    1. Origin: medial aspects of maxilla and mandible, perioral skin and muscles, modiolus

    2. Insertion: skin and mucous membrane of lips

    3. Action: closes mouth, compresses and protrudes lips

  4. Corrugator supercilii

    1. Origin: medial end of superciliary arches, Fibers of orbicularis oculi muscle

    2. Insertion: skin above middle of supraorbital margin

    3. Action: draw the two eyebrows together medially and inferiorly; produce vertical wrinkles over the glabella and an expression of frowning

  5. Orbicularis oculi

    1. Origin: nasal part of frontal bone, frontal process of maxilla, medial palpebral ligament, lacrimal bone

    2. Insertion: skin of orbital region, lateral palpebral raphe, superior and inferior tarsal plates

    3. Action: closes eyelids tightly (orbital); closes eyelids gently (palpebral); compresses lacrimal sac (deep palpebral)

  6. Occipitofrontalis frontal belly

    1. Origin: dermis of skin and subcutaneous tissue of eyebrows

    2. Insertion: epicranial aponeurosis

    3. Action: elevates eyebrows, wrinkles skin on forehead