Questions: Frequent face washing removes the antimicrobial secretions of: sweat glands. holocrine glands. sebaceous glands. ceruminous glands.

The answer is: sebaceous glands.

Explanation for each option:

1. Sweat glands: These glands primarily produce sweat, which helps in thermoregulation and excretion of waste products. While sweat does have some antimicrobial properties, it is not the primary source of antimicrobial secretions on the skin.

2. Holocrine glands: This is a type of glandular secretion mechanism where the entire cell disintegrates to release its contents. Sebaceous glands are an example of holocrine glands, but the term "holocrine glands" itself is not specific to the skin's antimicrobial secretions.

3. Sebaceous glands: These glands secrete sebum, an oily substance that has antimicrobial properties. Frequent face washing can remove this sebum, thereby reducing the skin's natural antimicrobial barrier.

4. Ceruminous glands: These glands are found in the ear canal and produce earwax (cerumen), which has protective and antimicrobial properties. However, they are not relevant to face washing.

Summary: Frequent face washing removes the antimicrobial secretions of sebaceous glands, which produce sebum that helps protect the skin from microbial infections.