Muscles - Head & Ventral Neck Flashcards by Spencer Swayne | Brainscape

Q

Sternocleidomastoid (s) insertion

A

Mastoid process

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Q

Sternocleidomastoid (s) origin

A

Sternum & clavicle

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Q

Sternocleidomastoid (s) action

A

Rotates head laterally, flexes head

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Q

Masseter (s) origin

A

Zygomatic arch

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Q

Masseter (s) insertion

A

Lateral mandible

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Q

Masseter (s) action

A

Elevates jaw

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Q

Temporalis (s) origin

A

Temporal bone

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Q

Temporalis (s) insertion

A

Mandible

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Q

Temporalis (s) action

A

Elevates jaw

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Q

Sternohyoid origin

A

Manubrium & clavicle

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Q

Sternohyoid insertion

A

Hyoid bone

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Q

Sternohyoid action

A

Depress larynx; flex skull

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Q

Mylohyoid origin

A

Mandible

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Q

Mylohyoid insertion

A

Hyoid bone

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Q

Mylohyoid action

A

Elevates floor of mouth

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Q

Digastric origin

A

Mandible & mastoid process

Q

Digastric insertion

A

Hyoid bone

Q

Digastric action

A

Elevate hyoid

Q

Frontalis origin

A

Frontal bone

Q

Frontalis insertion

A

Skin of eyebrow and root of nose

Q

Frontalis action

A

Raises eyebrow and wrinkles forehead

Q

Orbicularis oculi origin

A

Frontal and maxillary bones

Q

Orbicularis oculi insertion

A

Tissue of eyelids

Q

Orbicularis oculi action

A

Involved in blinking, squinting, and protects eye from injury

Q

Orbicularis oris origin

A

Maxilla and mandible

Q

Orbicularis oris insertion

A

Muscles and skin at angles of mouth

Q

Orbicularis oris action

A

Closes lips, kissing and whistling

Q

Mentalis origin

A

Mandible

Q

Mentalis insertion

A

Skin of chin

Q

Mentalis action

A

Protrudes lower lip, wrinkles chin

Q

Platysma origin

A

Fascia of chest

Q

Platysma insertion

A

Mandible

Q

Platysma action

A

Depresses mandible