Week 11

Question 1

the hypersensitivies that typically involve antibody-mediated response is/are

Answer 1

type 1, type 2, type 3

Question 2

allergies and anaphylaxis are hypersensitivities in the category

Answer 2

type 1 only

Question 3

transfusion of the wrong blood type could result in which type of hypersensitive reaction?

Answer 3

type 2 only

Question 4

mold spores and animal dander are considered to be which type of allergen?

Answer 4

inhalant

Question 5

the initial encounter with an allergen is called the

Answer 5

sensitizing dose

Question 6

what will be the immediate action of allergen when it enters the body for a second time?

Answer 6

bonding of allergen to adjacent lgE binding sites on mast cells and basophils

Question 7

any heightened or innappropriate immune response resulting in tissue damage is called

Answer 7

hypersensitivity

Question 8

histamine causes all the following except

Answer 8

increased sensitivity to light

Question 9

all of the following are associated with lgE- and mast cell-mediated allergy, except

Answer 9

systemic lupus erythematosus

Question 10

epinephrine

Answer 10

reverses constriction of airways

Question 11

allergic patients receiving small, controlled injections of specific allergens are undergoing

Answer 11

desensitization

Question 12

all of the following operate in surveillance and destruction of tumor cells, except

Answer 12

B cells

Question 13

which cells play the greatest role in allergic symptoms

Answer 13

mast cells

Question 14

antigens that cause allergic reactions in sensitized individuals are collectively referred to as

Answer 14

allergens

Question 15

CD4 is to helper T lymphocyte while CD8 is to

Answer 15

Cytotoxic T lymphocyte

Question 16

which of the following is an example of artifically acquired adaptive immunity

Answer 16

vaccination

Question 17

diapedesis is

Answer 17

when cells like neutrophils exit a blood vessel and enter affected tissue

Question 18

if a patient has elevated lymphocytes, what might this indicate

Answer 18

viral infection

Question 19

which of the following leukocytes is the first to the site of infection or injury?

Answer 19

neutrophil

Question 20

which of the following is not an antigen-presenting cell (APC)?

Answer 20

T cell

Question 21

monocytes become ____ once they enter tissues

Answer 21

macrophages

Question 22

which of the following chemicals sequester iron from invading microbes

Answer 22

gastroferrin and lactoferrin

Question 23

while looking at a blood smear, you see a white blood cell containing pink-red and orange granules, you suspect this cell is most likely to be

Answer 23

eosinophil

Question 24

helper T cells

Answer 24

activate B cells and other T cells

Question 25

the molecules fragment on an antigen molecule that a lymphocyte recognizes and responds to it called a/an

Answer 25

epitope

Question 26

the immunoglobulin class that has dimer form found in mucus, saliva, colostrum, and other body secretions is

Answer 26

IgA

Question 27

the immunoglobulin class that is the only one capable of crossing the placenta is

Answer 27

IgG

Question 28

cytotoxic T cells

Answer 28

secrete granzymes that perforins that damage target cells

Question 29

which are the first to attack cancer cells and virus-infected cells?

Answer 29

natural killer (NK) cells

Question 30

the body's first line of defense includes all the following, except

Answer 30

phagocytic white blood cells