Professor Bethea is giving a lecture on the eye and the visual system. Name and describe three features that protect the eye that she would tell her class to study.
What will be an ideal response?
Professor Bethea would tell her students to study1. the bony orbit of the skull, which can deflect many blows.2. the fat that cushions the eye for protection.3. the eyelids. The eyelids can be opened and closed either voluntarily or involuntarily (blinking).4. blinking of the eyes, which protects the eye from incoming objects and moistens and cleans the front of the eye.5. tears, another feature of the eyes' protective system, which are produced in the lacrimal gland at the outer corner of each eye. The fluid is composed primarily of water and salt but also contains proteins, glucose, and substances that kill bacteria.
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