ANATOMY

Detailed explanation-1: -The occipital part of the occipitofrontalis muscle moves the scalp forwards, and the frontalis part lifts the brows and moves the anterior scalp backward. When the frontalis muscle contracts, the vertical fibers pull the skin of the eyebrows upward.

Detailed explanation-2: -Occipitalis Muscle The occipitalis is a thin quadrilateral muscle in the posterior scalp. It originates on the occipital bone and the mastoid process of the temporal bone. It inserts into the galea aponeurotica. The occipitalis draws the scalp posteriorly.

Detailed explanation-3: -Its primary function is to move the scalp towards the posterior of the skull. Occipitalis works with frontalis to manipulate the scalp which aids in the formation of human facial expressions by raising the eyebrows and creasing the forehead.

Detailed explanation-4: -The occipital belly of the occipitofrontalis (Latin: venter occipitalis musculi occipitofrontalis), also known as the occipitalis, is a paired skeletal muscle of the head. This muscle is classified as the facial muscle.

Detailed explanation-5: -The occipitofrontalis muscle (epicranius muscle) is a muscle which covers parts of the skull. It consists of two parts or bellies: the occipital belly, near the occipital bone, and the frontal belly, near the frontal bone. It is supplied by the supraorbital artery, the supratrochlear artery, and the occipital artery.