Infection Response

Question 1

Innate Immunity

Answer 1

innate immune responses are the first line of defense against invading pathogens.

Question 2

Acquired Immunity

Answer 2

A type of immunity that develops when a person’s immune system responds to a foreign substance or microorganism, or that occurs after a person receives antibodies from another source.

Question 3

Physical Barriers

Answer 3

Natural barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid.

Question 4

Chemical barriers

Answer 4

Sweat, mucus, tears, saliva, and breastmilk all contain antimicrobial substances, such as the enzyme lysozyme, that kill pathogens, especially bacteria

Question 5

B-cells

Answer 5

a key player of the adaptive immune response that is responsible for humoral immunity in mammals.

Question 6

T-cells

Answer 6

part of the immune system and develop from stem cells in the bone marrow. They help protect the body from infection and may help fight cancer