Skeletal Muscles Of The Head And Neck.

Question 1

When the occipitalis is contracted, the frontalis raises the eyebrows and wrinkles of the skin on the forehead. When the occipitalis is relaxed it draws the skin anteriorly.

Answer 1

Frontalis

Question 2

It pulls the skin posteriorly.

Answer 2

Occipitalis

Question 3

Together they extend the head by flexing the cervical portion of the vertebral column. Alone they turn the head in the direction opposite of the contraction.

Answer 3

Steenocleidomastoid

Question 4

Acts with the masseter to raise and pull back the mandible.

Answer 4

Temporalis

Question 5

Raises and pulls back the lower mandible, closes the mouth, and clenches the teeth. It also may move the mandible from side to side.

Answer 5

Masseter

Question 6

Closes and protrudes the lips and pulls the lips back against the teeth

Answer 6

Orbicularis oris

Question 7

Elevates the head when contracting together, and rotates the head when contracting singly

Answer 7

Splenius capitis

Question 8

Elevates and helps the scapula rotate when adducting the arm.

Answer 8

Rhomboideus minor

Question 9

Elevates and draws the scapula medically. It also extends and or flexes the head.

Answer 9

Levator Scapulae