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30 terms

Anatomy lab: Muscles of the neck and tongue

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Genioglossus
Origin: mandible. Insertion: tongue, hyoid. Action: retracts and protrudes tongue.
Mandible
What is the origin of the genioglossus?
Tongue, hyoid
What is the insertion of the genioglossus
Retracts and protrudes tongue
What is the action of the genioglossus?
Genioglossus
Picture 8
Sternocleidomastoid
Origin: sternum, clavicle. Insertion: Mastoid process of temporal bone. Action: Unilateral: turns head to opposite side. Bilateral: flexes neck
Sternum, clavicle
What is the origin of the sternocleidomastoid?
Mastoid process of temporal bone
What is the insertion of the sternocleidomastoid?
Unilateral: turns head to opposite side. Bilateral: flexes neck
What is the action of the sternocleidomastoid?
Sternocleidomastoid
Picture 2, just under the pterygoid
Sternohyoid
Origin: sternum. Insertion: hyoid. Action: Depresses larynx and hyoid during speaking and swallowing
Sternum
What is the origin of the sternohyoid
Hyoid
What is the insertion of the Sternohyoid?
Depresses larynx and hyoid
What is the action of the sternohyoid?
Sternohyoid
Picture 9, number 5
Sternothyroid
Origin: sternum. Insertion: thyroid cartilage. Action: Depresses larynx and hyoid during speaking and swallowing
sternum
What is the origin on the sternothyroid?
thyroid cartilage
What is the insertion of the sternothyroid?
Depresses larynx and hyoid
What is the action of the sternothyroid?
Sternothyroid
Picture 10, bottom right line (not little baby line)
Mylohyoid
Origin: mandible. Insertion: hyoid. Action: Elevates hyoid, depresses mandible
Mandible
What is the origin of the mylohyoid?
Hyoid
What is the insertion of the mylohyoid?
Elevates hyoid, depresses mandible
What is the action of the mylohyoid?
mylohyoid
Picture 10, 3rd line from the top left
Geniohyoid
Origin: mandible. Insertion: hyoid. Action: elevates and protrude hyoid (widens pharynx during swallowing)
Mandible
What is the origin of the geniohyoid?
Hyoid
What is the insertion of the geniohyoid?
Elevates and protrudes hyoid
What is the action of the geniohyoid?
Geniohyoid
Picture 11 and picture 12