Muscles Of The Head, Neck And Face

Front 1

Sternocleidomastoid Unilateral A

Back 1

Laterally flexes the head to the same side
Rotates the haed to the opposite side

Front 2

Sternocleidomastoid Bilateral A

Back 2

Flexes teh neck
Assists in inhalation

Front 3

Sternocleidomastoid O

Back 3

Sternal head: top of manubrium
Clavicular head: medial one-third of the clavicle

Front 4

Sternocleidomastoid I

Back 4

Mastoid process of temporal bone, lateral suprior nuchal line of occiput

Front 5

Scalenes Bilateral A

Back 5

All: Elevate the ribs during inhalation
Anterior only: Flex neck

Front 6

Scalenes Unilateral A

Back 6

With ribs flexed, laterally flex the neck to the same side
Rotate head and neck to the opposite side

Front 7

Anterior Scalene O

Back 7

Transverse process of third to sixth cervical vertebrae (anterior tubercles)

Front 8

Anterior Scalene I

Back 8

First rib

Front 9

Middle Scalene O

Back 9

Transverse processes of second to seventh cervical vertebrae (posterior tubercles)

Front 10

Middle Scalene I

Back 10

First rib

Front 11

Posterior Scalene O

Back 11

Transverse processes of fifth and sixth cervical vertebrae (posterior tubercles)

Front 12

Posterior Scalene I

Back 12

Second rib

Front 13

Masseter A

Back 13

Elevates the mandible

Front 14

Masseter O

Back 14

Zygomatic arch

Front 15

Masseter I

Back 15

Angle and ramus of mandible

Front 16

Temporalis A

Back 16

Elevates the mandible
Retracts the mandible

Front 17

Temporalis O

Back 17

Temporal fossa and fascia

Front 18

Temporalis I

Back 18

Coronoid process of the mandible

Front 19

Suprahyoids A

Back 19

Elevate hyoid and tongue
Depress mandible

Front 20

Suprahyoids O

Back 20

Geniohyoid, Mylohyoid: underside of mandible
Stylohyoid: styliod process

Front 21

Suprahyoids I

Back 21

Hyoid bone

Front 22

Digastric A

Back 22

With hyoid bone fixed, depresses the mandible
With mandible fixed, elevates hyoid
retracts the mandible

Front 23

Digastric O

Back 23

Mastoid process

Front 24

Digastric I

Back 24

Inferior border of the mandible

Front 25

Infrahyoid A

Back 25

Depress the hyoid bone and thyroid cartilage

Front 26

Infrahyoid O

Back 26

Omohyoid: superior border of the scapula
Sternohyoid and sternothyroid: manubrium

Front 27

Infrahyoid I

Back 27

Omohyoid and Sternohyoid: hyoid bone
Sternothyroid: thyroid cartilage

Front 28

Platysma A

Back 28

Assists in depressing the mandible
Tightens the fascia of the neck

Front 29

Platysma O

Back 29

Fascia covering suprior part of pectoralis major

Front 30

Platysma I

Back 30

Edge of mandible, skin of lower part of face

Front 31

Occipitofrontalis A

Back 31

Frontalis: raises the eyebrows and wrinkles the forehead
Occipitalis: Anchors and retract the galea posteriorly

Front 32

Occipitofrontalis O

Back 32

Galea aponeurotica

Front 33

Occipitofrontalis I

Back 33

Frontalis: skin over the eyebrows
Occipitalis: superior nuchal line of the occiput