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Introduction to Immunology and Immune Responses Quiz

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Introduction to Immunology and Immune Responses Quiz

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Questions and Answers

What is the main function of keratins in the human body?

Make up the main components of hair, nails, and outer skin cells (correct)

Facilitate microbial invasion

Provide chemical protection

Contribute to nonspecific immunity

Why is the skin slightly acidic?

Due to high sodium chloride concentration

Because of the presence of keratins

Resulting from secretions from sweat glands (correct)

Caused by commensal staphylococci

How do mucous membranes protect against microbial invasion?

By forming a protective covering and mucous secretions (correct)

By withstanding microbial invasions

By producing keratins

Through trapping microorganisms in acid

What is the function of tears in protecting the eye?

To flush away microorganisms and provide chemical protection Signup and view all the answers

Why are most microorganisms that reach the stomach killed?

As a result of the acidity of gastric juice and proteolytic enzymes Signup and view all the answers

What is the significance of keratins in providing protection for hair and nails?

Keratins form a barrier that resists penetration by microorganisms Signup and view all the answers

Which of the following statements about the nonspecific immune response is correct?

Its responses occur to the same extent each time a microorganism or foreign body is encountered. Signup and view all the answers

Which of the following is NOT a component of the physical barriers in nonspecific (innate) resistance?

Antibodies Signup and view all the answers

The outer layer of the skin that contributes to nonspecific host resistance is composed of:

Keratinocytes Signup and view all the answers

Which of the following statements about the skin as a physical barrier in nonspecific (innate) resistance is correct?

Its intact state contributes greatly to nonspecific host resistance. Signup and view all the answers

According to the information provided, which of the following statements about immunology is correct?

It includes the biological, chemical, and physical aspects of the immune response. Signup and view all the answers

Which of the following statements about the two types of immune responses is correct?

The nonspecific immune response is also known as nonspecific resistance and innate or natural immunity. Signup and view all the answers