occipitofrontalis muscle

One part, the superficial division, runs over the surface of the Occipitofrontalis muscle.

The other part, the deep division, runs into the Occipitofrontalis muscle and provides frontoparietal sensation.

It is the posterior belly of the occipitofrontalis muscle, and functions to move the scalp.

It could be part of occipitofrontalis muscle.

Thus, in humans, the neck muscles (including the occipitofrontalis muscle) do not need to be as robust in order to hold the head upright.

The Occipitofrontalis muscles can raise the eyebrows, either together or singly, forming expressions of surprise and quizzicality.

These diminished muscles allow the human head to be held in its current 'upright' position and lets the occipitofrontalis muscle, or the forehead, to function as an aid to expressions.

The Occipitofrontalis muscles produce the transverse wrinkles across the width of the forehead, and the Corrugator supercilii muscles produce vertical wrinkles between the eyebrows above the nose.

Panas is credited with introducing an operation for entropion in trichiasis, as well as an operation for attachment of the upper eyelid to the occipitofrontalis muscle for treatment of blepharoptosis.