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Ex. 15 Major muscles of body
Major muscles - action, origin, insertion
19
Anatomy
Undergraduate 1
11/01/2011

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Cards

Term
Epicranius/occipitofrontalis (frontal and occipital bellies)
Definition
Action: Raises eyebrows, pulls scalp posteriorly Origin: Occipital and temporal bones Insertion: Skin of eyebrows
Term
Orbicularis oculi
Definition
Action: Close eye lids; Origin: Frontal and maxillary bones; Insertion: Skin of eyelid
Term
Risorius
Definition
Action: Draws corner of lip laterally ; Origin: Fascia of masseter; Insertion: Skin at angle of mouth
Term
Orbicularis oris
Definition
Action: Close lips; Origin: Maxilla and mandible; Insertion: Skin of mouth
Term
Zygomaticus
Definition
Action: Elevates corners of mouth; Origin: Zygomatic bone; Insertion: Skin and muscle at corners of mouth
Term
Buccinator
Definition
Action: Draws corner of lips laterally; Origin: Molar region of mandible and maxillae; Insertion: Orbicularis oris
Term
Depressor Labii Inferioris
Definition
Action: Draws lower lip inferiorly; Origin: Body of mandible; Insertion: Skin and muscle of lower lip
Term
Levator Labii Superioris
Definition
Action: Raises upper lip; Origin: Zygomatic bone and maxilla; Insertion: Skin and muscle of upper lip
Term
Depressor anguli oris
Definition
Action: Draws corners of mouth down and lateral; Origin: Mandible; Insertion: Skin and muscle at angle of mouth
Term
Mentalis
Definition
Action: Protrudes lower lip; Origin: Anterior mandible; Insertion: Skin of chin
Term
Masseter
Definition
Action: Elevate mandible; Origin: Zygomatic arch and maxilla; Insertion: Angle and ramus of mandible
Term
Temporalis
Definition
Action: Elevate and retract mandible; Origin: Temporal fossa; Insertion: Coronoid process of mandible
Term
Platysma (not on models)
Definition
Action: Depress mandible; Origin: Fascia of chest; Insertion: Mandible
Term
Sternocleidomastoid
Definition
Action: Flex neck and rotate head; Origin: Manubrium of sternum and clavicle; Insertion: Mastoid process of temporal bone
Term
Scalenes
Definition
Action: Flex and rotate neck, elevate ribs; Origin: Transverse process of cervical vertebrae; Insertion: Ribs 1 and 2
Term
Digastrics
Definition
Action: Elevate hyoid, open mouth, depress mandible; Origin: Lower mandible and mastoid process; Insertion: Hyoid bone
Term
Stylohyoid
Definition
Action: Elevates and retracts hyoid; Origin: Styloid process of temporal bone; Insertion: Hyoid
Term
Mylohyoid
Definition
Action: Elevates hyoid bone during swallowing; Origin: Medial mandible; Insertion: Hyoid bone
Term
Sternohyoid
Definition
Action: Depresses larynx; Origin: Manubrium and clavicle; Insertion: Hyoid bone
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