GROSS ANATOMY

Detailed explanation-1: -The orbicularis oculi muscle closes the eyelids and assists in pumping the tears from the eye into the nasolacrimal duct system. The orbital section of the orbicularis oculi is more involved in the voluntary closure of the eyelid, such as with winking and forced squeezing.

Detailed explanation-2: -The orbicularis oculi muscle is a broad, flat, sheet of skeletal muscle with orbital, palpebral and lacrimal portions. The circular orientation of the fibres is a reflection of the sphincter-like function of this muscle. The orbital portion arises from the medial palpebral ligament and the adjacent orbital margin (Fig.

Detailed explanation-3: -One of the muscles involved in blinking is called the orbicularis oculi. During each blink, fluid produced by tear (lacrimal) glands passes over the protective dome of clear tissue at the front of the eyes (cornea) and lubricates the surface of the eyes.

Detailed explanation-4: -The muscle of expression, and especially the zygomaticus major and minor works to pull the orbicularis oris upward to form the smile. The orbicularis oris circle the mouth, controlling the movements associated with the mouth and lips.

Detailed explanation-5: -The Orbicularis Oculi The Orbicularis Oculi muscle opens and closes the eyelids thus allowing us to blink, wink or squint in bright sunlight.