If the muscle attaches at a place that moves during the action of the muscle, the attachment is called an insertion. The depressor labii inferioris inserts into the skin of the lower lip.

Bonobo facial expressions reveal complex communication; new system maps 28 moves from distinct muscle actions.

The face contains over 40 muscles responsible for our expressions and movements. Unlike body muscles that attach to bones on both ends, many facial muscles connect directly to the skin on one end.

Activation of each muscle group causes a specific change in facial expression. For example, pain-related expressions often include furrowed brows, elevated cheeks, squinting, wrinkled nose and ...

A smaller, more recent 2021 pilot study involving six people suggested that facial massage can improve muscle mobility in the face. This, in turn, may help “lift” the cheeks.

In half the trials, smiling muscles were activated at the onset of the face. It emerged that producing a weak smile for 500 milliseconds was enough to induce the perception of happiness.

First, a facial anatomy refresher: The face is composed of layers of skin, fat and muscle that sit on top of our skull, Dr. Murad Alam, vice chair of dermatology at Northwestern University, told ...

Coyotes turn out to have face muscles that look capable of making that big-eyed, sad-puppy face that dogs have used to melt human hearts for eons. That discovery supports a rethink of humans ...