H&n Facial Muscles By Diagram & Their Actions

Front 1

Back 1

Corrugator Supercilii Muscle:
• Muscles of Facial Expression

-Furrows Brow

Front 2

Back 2

Orbicularis Oculi Muscle:
• Muscles of Facial Expression

-Closes Eyelid

Front 3

Back 3

Nasalis Muscle:
• Muscles of Facial Expression

-Flares Nostrils

Front 4

Back 4

Levator Labii Superioris Alaeque Nasi Muscle:
• Muscles of Facial Expression

-Elevates Upper Lip
-Flares Nostrils

Front 5

Back 5

Levator Labii Superioris Muscle:
• Muscles of Facial Expression

-Elevates Upper Lip

Front 6

Back 6

Zygomatic Minor Muscle:
• Muscles of Facial Expression

-Elevates Upper Lip

Front 7

Back 7

Levator Anguli Oris Muscle:
• Muscles of Facial Expression

-Elevates Angle of Mouth

Front 8

Back 8

Zygomaticus Major Muscle:
• Muscles of Facial Expression

-Elevates Upper Lip

Front 9

Back 9

Risorius Muscle:
• Muscles of Facial Expression

-Stretches the Lips

Front 10

Back 10

Orbicularis Oris Muscle:
• Muscles of Facial Expression

-Closes, Purses, & Puckers Lip
-Rolls Lips Over Teeth

Front 11

Back 11

Depressor Anguli Oris Muscle:
• Muscles of Facial Expression

-Depresses Angle of Mouth

Front 12

Back 12

Depressor Labii Inferioris Muscle:
• Muscles of Facial Expression

-Depresses Lower Lip

Front 13

Back 13

Mentalis Muscle:
• Muscles of Facial Expression

-Protrudes Lower Lip

Front 14

Back 14

Platysma Muscle:
• Muscles of Facial Expression

-Tenses Skin of Neck

Front 15

Back 15

Frontal Belly of Epicranial Muscle:
• Muscles of Facial Expression

-Elevates Eyebrows
-Wrinkles Forhead

Front 16

Back 16

Epicranial Aponeurosis
• Muscles of Facial Expression

Front 17

Back 17

Anterior Auricular Muscle:
• Muscles of Facial Expression

-Wiggles Ears

Front 18

Back 18

Superior Auricular Muscle:
• Muscles of Facial Expression

-Wiggles Ears

Front 19

Back 19

Posterior Auricular Muscle:
• Muscles of Facial Expression

-Wiggles Ears

Front 20

Back 20

Occipital Belly of Epicranial Muscle:
• Muscles of Facial Expression

-Pulls Scalp Backwards.

Front 21

Back 21

Sternocleidomastoid Muscle:
• Cervical Muscle

- If one pair contracts, the head and neck bend to the unilateral side, and the face and front of the neck rotate to the contralateral side.
- If both pairs contract, the head will flex at the neck and extend at the junction between the neck and skull.

♢ Origin: from the medial part of the clavicle and the sternum’s superior and lateral surfaces and passes posteriorly and superiorly.
♢ Insertion: on the mastoid process of the temporal bone.

Front 22

Back 22

Trapezius Muscle:
•Cervical Muscle

-Lifts the clavicle and scapula, as when the shoulders are shrugged.

♢ Origin: from the external surface of the occipital bone and the posterior midline of the cervical and thoracic regions.
♢ Insertion: on the lateral third of the clavicle and parts of the scapula.