12 Questions
What is the main function of keratins in the human body?
Make up the main components of hair, nails, and outer skin cells
Why is the skin slightly acidic?
Resulting from secretions from sweat glands
How do mucous membranes protect against microbial invasion?
By forming a protective covering and mucous secretions
What is the function of tears in protecting the eye?
To flush away microorganisms and provide chemical protection
Why are most microorganisms that reach the stomach killed?
As a result of the acidity of gastric juice and proteolytic enzymes
What is the significance of keratins in providing protection for hair and nails?
Keratins form a barrier that resists penetration by microorganisms
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.
Which of the following is NOT a component of the physical barriers in nonspecific (innate) resistance?
Antibodies
The outer layer of the skin that contributes to nonspecific host resistance is composed of:
Keratinocytes
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.
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.
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.
Test your knowledge on the general ability of hosts to resist infections, the science of immunology, immune responses to foreign challenges, and the distinction between self and nonself in immune responses.
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