Flashcards
(112 cards)
Origin, Insertion, Movement
Epicranium (Frontal Belly)
Epicranial aponeurosis>Eyebrow skin + nose Bridge
Raising Eyebrows, Wrinkle Forehead
Origin, Insertion, Movement
Epicranium (Occipital Belly)
Occipital (Superior Nuchal Line) and temporal bones>Epicranial aponeurosis
Pulls Scalp Posteriorly
Origin, Insertion, Movement
Orbicularis Oculi
Frontal and maxillary bones>Eyelid
Closes Eyes
Origin, Insertion, Movement
Levator Labii Superioris
Zygomatic bone and infraorbital margin of maxilla>upper lip/nostril (Superior one that elevates lip)
Raises/Furrows Upper Lips (Duck Face Muscle)
Origin, Insertion, Movement
Zygomaticus Major/Minor (Which is which?)
Zygomatic bone–> Corner of mouth (Minor is to medial lip, major is lateral. Minor is also superior)
(Raises lateral corners of mouth for smiling, synergist with risorius?)
Origin, Insertion, Movement
Risorius
Fascia of Masseter–>Side of Mouth
Puls corners of lips laterally (Zygomatic Synergistic)
Origin, Insertion, Movement
Orbicularis Oris
Maxilla and Mandible> Lateral Mouth Angle
Closes lips, Purses and protrudes lips (Mackin + Whistling)
Origin, Insertion, Movement
Buccinator
Molar region of maxilla and mandible-> Orbicularis Oris (Deep Cheek Muscle)
Compresses Cheek, Holds food for chewing, Draw corner of mouth laterally
Origin, Insertion, Movement
Masseter Muscles
Zygomatic arch and Maxilla>Angle and ramus of mandible
Closes Jaw
Origin, Insertion, Movement
Temporalis Muscles
Temporal fossa>Coronoid process of mandible
Closes and retracts the jaw
Origin, Insertion, Movement
Medial Pterygoid (Synergist to what?)
Maxillary, Palatine, Sphenoid Bones > Medial surface of mandible (M(axilla)edial P(alatine)tery(sphen)oid)
Elevates Mandible, Grinds Teeth
Synergist of temporalis and masseter
Origin, Insertion, Movement
Lateral Pterygoid
Greater Wing of Sphenoid>Mandibular Condyle
Protracts Jaw, Grinds Teeth
Origin, Insertion, Movement
Genioglossus
Internal Surface of Mandible (Chin)> Inferior aspect of tongue, body of Hyoid Bone
Protracts Tongue (Big ol tongue muscle)
Origin, Insertion, Movement
Hyoglossus
Body + Greater Horn of Hyoid Bone > Inferolateral tongue
Depresses Tongue
Origin, Insertion, Movement
Styloglossus
Styloid Process of Temporal Bone > Inferolateral Tongue
Retracts and elevates tongue (Towards the styloid process)
Origin, Insertion, Movement
Extrinsic Eye Muscles
Bony Orbit > Sclera of Eye
in=medial; out=lateral
Superior Rectus > Up and In
Inferior Rectus > Down and In
Lateral Rectus > Out
Medial Rectus > In
Inferior Oblique Muscles > Up and Out (Below Eye, attaches going medial)
Superior Oblique Muscles > Down and Out (>Trochlea > Posterosuperior eye attaches going lateral))
Notsureifsrs OBLIQUE MOVEMENT???
Origin, Insertion, Movement
Digastric (two parts)
Lower Margin of Mandible (Anterior Belly) and Mastoid Process of Temporal Bone (Posterior Belly) > Hyoid Bone (Loops Around It)
Elevates Hyoid Bone, Opens mouth and depress mandible.
Origin, Insertion, Movement
Stylohyoid
Styloid Process of Temporal Bone > Hyoid Bone
Elevates and retracts hyoid bone
Origin, Insertion, Movement
Mylohyoid
Medial Surface of Mandible> Hyoid Bone
Elevates hyoid bone + Tongue base during swallowing
Origin, Insertion, Movement
Geniohyoid
Inner Surface of Mandible > Hyoid Bone(Between Genioglossus and Mylohyoid)
Pulls hyoid bone superiorly and anteriorly
Origin, Insertion, Movement
Sternohyoid
Manubrium and medial end of clavicle > Hyoid Bone
Depresses Larynx and Hyoid Bone
Origin, Insertion, Movement
Sternothyroid
Manubrium > Thyroid Cartilage of Larynx (Inf. to Thyohyoid)
Depressed Larynx and Hyoid Bone
Origin, Insertion, Movement
Omohyoid (Two Bellies)
Superior Border of Scapula > Hyoid Bone (More Like Scapula > Inf. Belly > Sup Belly > Hyoid)
Depresses larynx and Hyoid Bone
Origin, Insertion, Movement
Thyrohyoid
Thyroid Cartilage > Hyoid Bone
Depresses Hyoid Bone, or elevates larynx if Hyoid is fixed