| Term | Definition |
|---|
| occipital Frontalis | its origin is the superior line of the occipital bone & the mastiod portion of the temporal bone. |
| occipital belly | draws the scalp backwards |
| frontal belly | draws the scalp forward & raises the skin over the nose & eyebrows |
| auricular muscle (6) | 3 thin muscles in the region of the ear, responsible for the movement of the scalp |
| temporalis (2) | broad radiating muscle shaped like a fan, retracts the lower jaw & brings the teeth together |
| temporalis (2) | its origin is in the temporal fossa, strongest of all chewing muscles |
| occipital frontalis, auricular, temporalis | muscles of the cranium |
| platysma, digastricus, sternocleidomastiodeus | muscles of the neck |
| platysma | two broad flat superficial muscles which arise from the facia covering large muscles of the collar bone, ribs & shoulder |
| platysma | function is to lower the angle of the mouth upon contraction |
| sternocleidomastiodeus | two relativly thick muscles which pass obliquely across the side of the neck |
| sternocleidomastiodeus | rotates the head, left, right, backwards & forwards |
| digastrcus | two bellied muscles which lie just below the body of the mandible |
| oblicularis oris, depressor anguli oris, depressor labii inferioris, mantalis | muscles of the mouth |
| oblicularis oris | sphincter muscle which encircles the mouth |
| oblicularis oris | begins at the base of the nose & extends down to the lower jaw & lateraly to both cheeks |
| oblicularis oris | opens & closes the mouth & moves the lips, presesses them together & moves them forward |
| depressor anguli oris/ triangularis | 3 sided muscle, originates on the oblique line of the mandible & inserts at the angle of the mouth |
| depressor anguli oris/ triangularis | contrbutes to the prominence of the angulus oris eminence |
| depressor labii inferioris/quadratus | quadrilateral muscle which arises from the oblique line of the mandible & moves upward to the skin of the lower lip by the location of the labiomental sulcus |
| depressor labii inferioris/quadratus | when contracted, this muscle moves the lower lip downward & to the side |
| mentalis | located on the porminence of the mental eminence btwn the 2 depressor labii inferoiris muscles |
| mentalis | originates at the incisive fossa and inserts into the skin & chin |
| mentalis | raises & protrudes the lower lip |
| quadratus labii superioris | 4 sided muscle that is superior to the upper lip, it begins at the lower margin of the eye socket & runs downward to the upper lip |
| quadratus labii superioris | lifts the upper lip & changes the expression of the mouth |
| levator labii superioris alaque nasi/comman elevator-lavator labii superoiris-zygomaticus minor | 3 heads of the quadratus labii superioris |
| lavator labii superioris alaque nasi/common elevator | a laong narrow strip running along side the nose, raises the upper lip & wings of the nose |
| lavator labii superioris | intermidiate head that lies lateral to the common elevator, raises the upper lip |
| zygomaticus minor | the lateral belly begins at the anterior part of the cheekbone & runs obliquely downward & medialy to the angle of the mouth |
| zygomaticus minor | is the most lateral head of the quadratus labii superioris muscle |
| zygomaticus minor | raises the upper lip at the angle of the mouth |
| zygomaticus major/laughing muscle | located lateral to the quadratus labii superioris & decends obliquely from the posterior portion of the zygomatic bone to the angle of the mouth |
| zygomaticus major/laughing muscle | draws the angle of the mouth posteriorly & superiorly |
| levator anguli oris | located in the region of the canine tooth, it runs from the canine tooth to the angle of the mouth |
| levator anguli oris | elevates the angle of the mouth |
| buccinator/trumpeters muscle | thin quadrilateral muscle in the soft areas of the cheek |
| buccinator/trumpeters muscle | its the principal muscle of the cheek & forms the lateral walls of the mouth, responsible for compressing the cheek |
| risorius | narrow superficial muscle running horizontaly across the cheek to the angle of the mouth, an action which is antagonistic to the buccinator muscle |
| masseter | located on the side of the face, originating on the anterior 2/3 of the zygomatic arch, extending downward & posterorly to the angle of the jaw |
| masseter | is for chewing, raises the lower jaw |
| pterygonideus medialis & pterygoideua lateralis | additional muscles of mastication |
| levator palpebrae superious | narrow tendinous muscle located deep in the eye socket, at the small wing of the sphenoid bone, ends in a wide aponeurosis |
| levator palpebrae superious | raises the upper eye lid |
| procerus | long thin muscle extending vertically from the nasal bone up to the forehead |
| corrugato/frowning muscle | located at the medial ends of the eyebrows, originating at the root of the nose & extends laterally & superiorly to the middle of the supra orbital margin |
| corrugato/frowning muscle | it the draws the eyebrows medially & inferiorly |
| orbicularis oculi | 2 thin broad sphincter muscles which surround both eyelids & are also partially spread over the temple & upper cheek |
| orbicularis oculi | eye lid portion- closes eyelid gently, orbital portion- winking of the eye |
Combine with other sets
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