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This muscle arises from the zygomatic arch and inserts in the mandible.

These furrows, colloquially known as crow’s feet, radiate from the lateral corner of the eye created by the orbicularis oculi muscle.

What factors, extrinsic or intrinsic, are responsible for acquired facial markings?   a. muscle striation   b. effect of gravity   c. age   d. heredity

Select the factors responsible for facial marking.   a. muscle action   b. environment   c. age   d. heredity

The _____ muscle causes facial markings (wrinkles) to form on the forehead.

The epicranius muscle also receives the name of _____ muscle.

This muscle is located in the canine fossa, immediately above the angles of the lips and inserts at the angle of the mouth.

The _____ muscle covers the top of the skull.   a. corrugator supercilii   b. occipitofrontalis   c. procerus   d. epicranius

The zygomaticus major muscle is _____.   a. located lateral the surface of the zygomatic bone.   b. inserts at angle of the mouth.   c. retracts and elevates the corner of mouth.   d. it is commonly known as the laughing muscle.

Someone in the _____ position is lying flat with the chest down and the back up.