| A | B |
|---|
| occipitofrontalis | draws the scalp posteriorly and anteriorly, causing eyebrows to raise and wrinkles to form on forehead |
| temporalis | muscle of mastication and is the strongest chewing muscle |
| masseter | muscle of mastication that closes the mandible |
| orbicularis oculi | closes the eyelid and compresses the lacrimal sac |
| corrugator | draws the eyebrows inferiorly and medially, as in frowning |
| levator palpebrae superioris | raises the upper eyelid |
| procerus | draws the skin of the forehead inferiorly, causing transverse and vertical wrinkles in the forehead |
| orbicularis oris | closes the lips; compresses lips against teeth; and shapes lips during speech |
| levator labii superioris alaeque nasi | raises the upper lip and dilates the nostrils |
| levator labii superioris | elevates and extends the upper lip |
| levator anguli oris | elevates the angle of the mouth |
| zygomaticus minor | draws the upper lip superiorly and laterally |
| zygomaticus major | draws the upper lip posteriorly, superiorly, and laterally as in smiling or laughing |
| buccinator | compresses the cheek, and it pulls the anguli oris posteriorly |
| risorius | draws corner of mouth posteriorly |
| depressor anguli oris | depresses the angle of the mouth |
| depressor labii inferioris | depresses the lower lip inferiorly and slightly laterally |
| mentalis | elevates and protrudes the lower lip and wrinkles the skin over the chin |
| platysma | wrinkles the skin of the neck and chest |
| sternocleidomastoid | rotates and depresses the head |
| digastric | draws the hyoid bone superiorly |
