Question

instructions

sternocleidomastoid
frontalis
splenius capitis
orbicularis oris

raises the eyebrow
puckers the lips
pulls the head to one side
rotates the head and allows it to bend to the side

Explanation:

Match Sternocleidomastoid action

Using the Muscle Actions and Head and Jaw Muscles knowledge points

• Sternocleidomastoid is a major neck muscle.
• Bilateral contraction flexes the neck, while unilateral contraction rotates the head and bends it to the side.
• Match: "Rotates the head and allows it to bend to the side"

Match Frontalis action

Using the Muscle Actions and Head and Jaw Muscles knowledge points

• Frontalis is the muscle covering the forehead.
• It functions to elevate the eyebrows and wrinkle the forehead skin.
• Match: "Raises the eyebrow"

Match Splenius capitis action

Using the Muscle Actions and Head and Jaw Muscles knowledge points

• Splenius capitis is a deep back muscle of the neck.
• Unilateral contraction rotates and pulls the head to one side.
• Match: "Pulls the head to one side"

Match Orbicularis oris action

Using the Muscle Actions and Head and Jaw Muscles knowledge points

• Orbicularis oris is a circular muscle surrounding the mouth.
• It closes and puckers the lips (often called the kissing muscle).
• Match: "Puckers the lips"

Answer:

Muscle	Action
Frontalis	Raises the eyebrow
Splenius capitis	Pulls the head to one side
Orbicularis oris	Puckers the lips