-
splenus capitis
extends, rotates, and laterally flexes neck
-
sternocleidomastoid
one contracting alone: laterally flexes head and neck to same side and rotates head and neck to opposite side
both contracting together: flex neck
-
scalenes
flex, laterally flex, and rotate neck
-
trapezius
- extends and laterally flexes
- elevates, depresses, retracts, rotates, and fixes scapula
- extends neck
-
levator scapulae
- elevates, retracts, and rotates scapula
- laterally flexes neck
-
occipitofrontalis
- moves scalp
- elevates eyebrows
-
orbicularis oculi
closes eyes
-
orbicularis oris
closes lips
-
platysma
- depresses lower lip
- wrinkles skin of neck and upper chest
-
zygomaticus major AND minor
elevates and abducts upper lip
-
temporalis
- elevates and retracts mandible
- involved in excursion (moving from side to side)
-
masseter
- elevates and protracts mandible
- involved in excursion
-
lateral pterygoid
- protracts and depresses mandible
- involved in excursion
-
medial pterygoid
- protracts and elevates mandible
- involved in excursion
-
digastric (posterior and anterior belly)
- depresses and retracts mandible
- elevates hyoid
-
buccinator
- retracts angle of mouth
- flattens cheek
-
sternothyroid
- depresses larynx
- fixes hyoid in mandibular depression
-
risorius
abducts angle of mouth
-
sternohyoid AND omohyoid AND thyrohyoid
- depresses hyoid
- fixes hyoid in mandibular depression
-
stylohyoid
elevates hyoid
-
mylohyoid
- elevates floor of mouth and tongue
- depresses mandible when hyoid is fixed
-
thyrohyoid
elevates thyroid cartilage of larynx
-
geniohyoid
- protracts hyoid
- depresses mandible
-
genioglossus
depresses and protrudes tongue
-
hyoglossus
retracts and depresses side of tongue
-
styloglossus
retracts tongue
|
|
