Which muscle closes the eyelids (blink)?

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Study for the Muscle Actions and Functions – Anatomy and Movement Test. Equip yourself with multiple choice questions, each with detailed explanations and hints. Prepare confidently for your exam!

Multiple Choice

Which muscle closes the eyelids (blink)?

Explanation:
The muscle that closes the eyelids is the orbicularis oculi. It forms a circular band around the eye and acts like a sphincter to bring the lids together. Its palpebral portion gently closes the eyelids during blinking, while the orbital portion can squeeze them more tightly for a stronger closure. The other muscles have different roles: orbicularis oris surrounds the mouth and closes or protrudes the lips; frontalis lifts the eyebrows and wrinkles the forehead; zygomaticus major elevates the corners of the mouth. So eyelid closure is specifically carried out by the orbicularis oculi.

The muscle that closes the eyelids is the orbicularis oculi. It forms a circular band around the eye and acts like a sphincter to bring the lids together. Its palpebral portion gently closes the eyelids during blinking, while the orbital portion can squeeze them more tightly for a stronger closure. The other muscles have different roles: orbicularis oris surrounds the mouth and closes or protrudes the lips; frontalis lifts the eyebrows and wrinkles the forehead; zygomaticus major elevates the corners of the mouth. So eyelid closure is specifically carried out by the orbicularis oculi.

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