Muscles Of The Head & Anterior Neck (lab) Flashcards
Frontalis
O: galea aponeurotica
I: Skin of eyebrows
A: raises eyebrows
Orbicularis Oculi
O: Frontal Bone and maxillary bone
I: Eyelid
A: Closes eye; squinting
Risorius
O: Fascia of the cheek
I: Corner of the mouth
A: Moves the corner of the mouth laterally
Zygomaticus
O: Zygomatic Bone
I: Corner of mouth
A: Elevates corner of mouth
Orbicularis Oris
O/I: Encircles mouth
A: Closes/protrudes lips
Platysma
O: Fascia of Chest
I: Lower margin of mandible
A: Tenses skin of neck
Masseter
O: Zygomatic arch
I: Ramus of mandible
A: Elevates mandible (close jaw)
Masseter
O: Zygomatic arch
I: Ramus of mandible
A: Elevates mandible (close jaw)
Temporalis
O: temporal and parietal bones
I: Coronoid process of mandible
A: elevates mandible (close jaw)
Digastric
O: mastoid process; temporal bone
I: mandible (via Hyoid bone)
A: Depresses mandible (open jaw); elevates hyoid (during swallowing)
Digastric
O: mastoid process; temporal bone
I: mandible (via Hyoid bone)
A: Depresses mandible (open jaw); elevates hyoid (during swallowing)
Mylohyoid
O: Mandible
I: Hyoid bone; midline (where two muscles meet)
A: Elevates floor of mouth
Mylohyoid
O: Mandible
I: Hyoid bone; midline (where two muscles meet)
A: Elevates floor of mouth
Sternohyoid
O: Manubrium of the sternum
I: Hyoid bone
A: depress hyoid
Sternohyoid
O: Manubrium of the sternum
I: Hyoid bone
A: depress hyoid
Sternocleidomastoid
O: Manubrium of sternum; clavicle
I: Mastoid process; temporal bone
A: flex and rotate neck
- Sternomastoid
- Cleidomastoid
O: Manubrium of sternum; clavicle
I: Mastoid process; temporal bone
A: flex and rotate neck
