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18 Cards in this Set
- Front
- Back
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Masseter Origin, insertion and action |
O: superior head- inferior border 2/3 of zygomatic arch Deep head-inferior border I: inferior border of mandible A: closed and opens mouth |
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Temporal |
O: temporal fossa I: corranoid process A: elevates mandible and pulls mandible back |
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Medial pterygoid muscle |
O: medial side of lateral pterygoid plate, pterygoid fossa, pyramidal process of palatine bone and maxilary tuberosity I: angle of mandible on medial side A: elevates and mandible and closes the mouth |
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Lateral pterygoid muscle |
O: superior- infraremporal crest of greater wing of sphenoid Inferior- lateral side of lateral pterygoid plate I: anterior border of tmj disk. Neck of condyle on anterior and medial side A: protrude and depress mandible (both used) Lateral excursion (oposite side of contacted muscle) Nerve-5th cranial nerve (trigrnimal nerve) |
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Suprahyoid muscles |
Digastric mylohyoid Geniohyoid Stylohyoid |
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Infrahyoid group |
Omohyoid Sternohyoid Sternothyroid Thyrohyoid |
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Digastric |
O: digatstric notch of temporal bone I: digastric fossa on inferior surface of mandible at midline A:retrudes mandible and lifts hyoid bone and pulls up on larynx Nerve-trigeminal nerve and facial nerve |
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Mylohyoid |
O: hylohyloid line on medial surface of mandible ridge I:hyloid bone A: depressed mandible or elevates hyloid bone Nerve-trigeminal nerve/mylohyloid branch |
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Geniohyoid |
O: mental slime and inferior genial tubricle I: hyoid bone @midline A: depress mandible and elevate hyoid Nerve-1st cervical nerve in neck |
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Stylohyoid |
O: styloid process I: posterior of hyoid bone A: pulls hyoid up and back Nerve-facial nerve 7 |
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Omohyoid |
O: upper border of scapula I: hyoid bone A: brings hyoid down Nerve-2 and 3 cervical nerve |
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Sternohyoid |
O: upper border of mandible of sternum I: front of hyoid bone A: pulls hyoid down Nerve- cervical 2&3 |
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Sternothyroid |
O: upper sternum I: lateral thyroid cartilage of larynx A: pulls larynx down Nerve-2&3 nerve |
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Thyrohyoid |
O: oblique line on lateral side of thyroid Cartlage I: hyoid bone A: lifts thyroid cart and raises larynx or depresses hyoid bone Nerve- 1st cervical nerve |
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Movements of mandible |
Protrusion Retrusion Lateral excursion Elevation Depression |
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Movements of larynx |
Hyoid pulls up Thyrohyoid elevates cartlage Epiglottis closes over larynx Trachea covered so food doesn’t go down |
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Sternocleidomastoid muscle |
O: upper border of sternum and medial 3rd of clav I: mastoid process of temp bone A: tilt and rotate head Nerve-11th cranial nerve. |
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Trap |
O: occipital protrubence on occipital bone and superior nuclear lines and spinus process of cervical and I: acrominum process and spine of scapula and lat 3rd of clav A: shrug shoulders. Rotate clav Nerve- 2&34 cranial nerve |
