Head and neck muscles Flashcards
Why was you to close your eyes, squints, blink, wink
Orbicularis occuli
It allows you to raise your eyebrows and
Frontalis
Pulls the scalp posteriorly
Occipitalis
Origin and insertion of the orbicularis oculi are
The origin is the frontal bone and maxilla and insertion is the tissue around the eyes
Origin and insertion of Frontalis
O:cranial aponeurosis
I: skin of the eyebrows
What direction do fibers of the orbicularis occuli run
Circles around the eye
Allows you to protrude your lips and play a brass instrument
Orbicularis oris
What direction does the Buccinator run
Horizontally across the cheek
Origin and insertion of the orbicularis oris
The origin is the mandible and maxilla and the insertion is the skin around the mouth
Origin and insertion of the Buccinator
The origin is the maxilla and mandible and the insertion is orbicularis oris
How does the masseter close the jaw
By elevating the mandible
Allows you to wrinkle your forehead
Frontalis
Allows you to flatten cheek when whistling, blowing, and chewing
Buccinator
Raisescorner of the mouth upward
Zygomaticus
Origin and insertion of a masseter
The origin is the zygomatic process and insertion is the mandible