Muscle flash cards
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- Retracts scalp; fixes galea aponeurotica.
- Occipitalis
- Raises eyebrows and creates wrinkles in forehead when occipitalis is contracted; draws scalp forward when occipitalis is relaxed
- Frontalis
- Closes eye; compresses lacrimal gland to promote flow of tears.
- Orbicularis Oculi
- Medially depresses eyebrows and draws them closer together; wrinkles skin between eyebrows.
- Corrugator Supercilii
- Origin of Corrugator Supercilli
- Superciliary ridge
- Insertion of Corrugator Supercilli
- skin of eyebrow
- Wrinkles skin between eyebrows; draws skin of forehead down.
- Procerus
- Origin of Procerus?
- skin on bridge of nose
- Insertion of Procerus?
- skin of forehead.
- One part widens nostrils; another part depresses nasal cartilages and compresses nostrils.
- Nasalis
- Origin of Nasalis
- maxilla and nasal cartilages
- Insertion of Nasalis
- bridge and alae of nose
- Closes lips; protrudes lips as in kissing; aids in speech.
- Orbicularis Oris
- Elevates upper lip
- Levator Labii Superioris
- Elevates corners of mouth as in smiling and laughing.
- Levator Anguli
- Origin of Levator Anguli
- Maxilla
- Insertion of Levator Anguli
- superior corner of mouth
- Draws corners of mouth laterally and upward, as in smiling and laughing
- Zygomaticus
- Draws corners of the mouth laterally as in grimacing
- Risorius
- Depresses corners of mouth, as in frowning.
- Depressor Anguli Oris
- Depresses lower lip
- Depressor Labii Inferioris
- Compresses cheek; pushes food between teeth; expels air or liquid from mouth; creates suction
- Buccinator
- Depresses mandible, opens and widens mouth, tenses skin of neck
- Platysma
- Elevates mandible for biting and chewing; retracts mandible.
- Temporalis
- Elevates mandible for biting and chewing; causes some lateral excursion of mandible.
- Massetor
- Retracts mandible; elevates and fixes hyoid; depresses mandible when hyoid is fixed.
- Digastric
- Forms floor of mouth; elevates hyoid; opens mouth when hyoid is fixed.
- Mylohyoid.
- Elevates hyoid.
- Stylohyoid
- Depresses hyoid; fixes hyoid during opening of mouth
- omohyoid
- Depress hyoid; fixes hyoid during opening of mouth.
- sternohyoid
- Depresses hyoid; elevates larynx; fixes hyoid during opeining of mouth.
- thyrohyoid.
- Depresses larynx; fixes hyoid during opening of mouth.
- sternohyoid.
- Contraction of either one draws head down and toward the side opposite the contractin muscle; contracton of both draws dead forward and down, as in looking between the feet.
- Sterncleidomastoid
- Flex neck laterally; elevate ribs 1 and 2 in inspiration
- Scalenes
- Abducts and extends nexk
- Trapezius
- Rotate head, extend neck
- Splenius Capitis