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More than one choice may apply.
Which of the following is (are) a feature of lacrimai secretions?
a. Sebum d. Lysozyme
b. Mucus e. Antibodies
c. Peroxide
Introduction:
Lacrimal secretions are secreted from the lacrimal glands. The function of the lacrimal secretions is to lubricate the eyeball surface. It makes the conjunctiva and cornea moisturized. These secretions also provided the nutrients and dissolved the oxygen to the cornea.
Answer to Problem 1MC
Correct answer:
Lacrimal secretions are mucus, lysozyme, and antibodies.
Explanation of Solution
Justification/Explanation for the correct answer:
Options (b, d, e) are given that mucus, lysozyme, and antibodies. Lacrimal secretions contain lysozymes, mucus, and antibodies. Lysozyme destroys the bacteria for protecting the surface of the eye. All of these secretions together function to clean and protects the eye by moistening and lubricating the eye. Increased lacrimal secretions resultin the spilling of tears from the eyes that eventually filled the nasal cavities that causes the congestion. Hence, options (b, d, e) are correct.
Explanation for the incorrect answers:
Option (a) is given that sebum. Sebum is the oily and waxy substance that is composed of triglycerides, wax esters, and metabolites of fat-producing cells. It is not included in the lacrimal secretions. So, it is an incorrect option.
Option (c) is given that peroxide. Peroxide is not produced by the lacrimal glands in the form of lacrimal secretions. So, it is an incorrect option.
Hence, options (a) and (c) are incorrect.
Therefore, it can be concluded as lacrimal secretions are mucus, lysozyme, and antibodies that moisten and lubricate the eyeball.
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