Muscle that lifts the Upper Eyelid (M. Levator Palpebrae superioris, Pna, Bna, Jna)

The muscle that lifts the upper eyelid, or the levator palpebræ superioris muscle (lat. Musculus levator palpebræ superioris), also known as lat. Musculus levatores palpebrarum superioris or lat. Musculus superciliaris superior is one of the muscles of the upper part of the face. It is responsible for raising the upper eyelid, which allows the eyes to open and close.

The muscle that lifts the upper eyelid consists of two parts: lateral and medial. The lateral part of the muscle is on the outside of the eye, and the medial part is on the inside. Both parts join in the middle of the eye to form a muscle.

This muscle is one of the most important muscles of the face as it is responsible for regulating the flow of light to the eye. When the muscle contracts, it lifts the upper eyelid and allows light to enter the eye. In addition, the muscle is involved in the expression of emotions such as joy, anger, fear and surprise.

To maintain the health of this muscle, it is necessary to monitor its activity and condition. Regular exercise, such as blinking, smiling, or squinting, can help keep the muscle healthy. It is also important to avoid straining and overexerting yourself, as this can lead to fatigue and pain in the area.

The levator palpebrae superioris muscle, as the name implies, is the muscle that is responsible for the movement of the upper eyelid; it is located in the frontal zone, under the part of the skull - the frontal orbital notch and under the periosteum of the frontal bone.

During work, the facial muscle lifts the eyelid, completely closing the eyeball, and during rest, it relaxes and the eyelid lowers again, making it possible to see. This muscle fiber is round in shape and has 3 parts, upper, middle and lower. The upper part, the largest and widest, is responsible for raising the upper eyelid. The base of the muscle tissue descends, going into the zygomatic arches, and along the way passes into a narrower fiber - the middle part. It is the middle part that is responsible for lowering the upper and middle eyelids of the eye. At the bottom there are two thin veins of fibers, these are the anterior fibers that work to lower the lower, stationary part of the eyelid.

Moves the eye up, down and inward, shifts the edge of the eyelids, and gives the eye a squinted expression. With bilateral contraction (simultaneous raising of both eyelids), the eyelids close.