Final answer:
The answer is Nervous tissue.
Step-by-step explanation:
The answer to the question is Nervous tissue.
The four main layers of the eyelid are:
- The skin: This is the outermost layer of the eyelid, providing protection to the underlying structures.
- Muscle: The muscles in the eyelid, known as the orbicularis oculi muscles, are responsible for blinking and closing the eyelid.
- Connective tissue: This layer provides support and structure to the eyelid.
- Conjunctiva: The conjunctiva is a thin, transparent membrane that covers the inner surface of the eyelid and the white part of the eye.
Nervous tissue is not one of the main layers of the eyelid.
Learn more about Layers of the eyelid