Muscles of the Head and Neck( with models pictures

32 terms by fmastali

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Frontalis

Draws back scalp, wrinkles forehead, raises eyebrows

Mentalis

Elevates and protrudes lower lip; used in pouting

Orbicularis oculi

Closes eyelids; used in blinking, winking, and squinting

Orbicularis oris

Closes and protrudes lips; used in whistling and forming many letters during speech; the "kissing muscle"

Risorius

Draws angles of the mouth laterally; draws lips into the grinning expression

Sternocleidomastoid

Contraction of one side: laterally flexes neck, rotates head to opposite side; Contraction of both sides together: flexes neck

Temporalis

Elevates and retracts mandible; assists in side to side movement of mandible

Trapezius

Elevates, depresses, retracts, and rotates the scapula; rotates the arm

Depressor anguli oris

Draws angles of mouth downward and laterally when opening mouth; used in frowning

Zygomaticus major

Draws angles of the mouth upward and outward; major muscle used in smiling and laughing

Auricularis anterior

Moves the ear

Buccinator

Draws angles of the mouth laterally; compresses cheek; used to create sucking action

Masseter

Elevates mandible when chewing and slightly protracts it

Risorius

Draws angles of the mouth laterally; draws lips into the grinning expression

Occipitalis

Draws back scalp, wrinkles forehead

Semispinalis capitis

Extends the head and rotates it to opposite side

Splenius capitis

Extends and hyperextends the head; Contraction of only one side laterally flexes and rotates the head and neck

Splenius capitis

Extends and hyperextends the head; Contraction of only one side laterally flexes and rotates the head and neck

Temporalis

Elevates and retracts mandible; assists in side to side movement of mandible

Trapezius

Elevates, depresses, retracts, and rotates the scapula; rotates the arm

Frontalis

Draws back scalp, wrinkles forehead, raises eyebrows

Masseter

Elevates mandible when chewing and slightly protracts it

Orbicularis oculi

Closes eyelids; used in blinking, winking, and squinting

Orbicularis oris

Closes and protrudes lips; used in whistling and forming many letters during speech; the "kissing muscle"

Depressor anguli oris

Draws angles of mouth downward and laterally when opening mouth; used in frowning

Zygomaticus major

Draws angles of the mouth upward and outward; major muscle used in smiling and laughing

Platysma

Draws down the lower lip and angles of the mouth; tenses skin of the neck; helps depress mandible

Genioglossus

Protracts and depresses tongue

Styloglossus

Retracts and elevates tongue

Stylohyoid

Retracts and elevates the hyoid

Sternocleidomastoid

Contraction of one side: laterally flexes neck, rotates head to opposite side; Contraction of both sides together: flexes neck

Zygomaticus major

Draws angles of the mouth upward and outward; major muscle used in smiling and laughing

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