Question 1

__________ participate in both innate immunity and the immune response.

Accepted Answer

A)   Memory T (TM) cells
B)   Regulatory T (TR) cells
C)   Natural killer (NK) cells
D)   Helper T (TH) cells
E)   Cytotoxic T (T
C)  cellsF) A) and E)
G) A) and D) D

Question 2

Cellular immunity uses B cells and humoral immunity uses antibodies.

Accepted Answer

A) True 
 B)False

Question 3

The serum used for emergency treatment of snakebites stimulates __________ immunity.

Accepted Answer

A)   artificial passive
B)   artificial active
C)   natural passive
D)   natural activeE) A) and B)
F) A) and C)

Question 4

Before B cells secrete antibodies,they differentiate into _________.

Accepted Answer

A)   stem cells
B)   antigen-presenting cells
C)   plasma cells
D)   T cells
E)   macrophagesF) C) and D)
G) A) and D)

Question 5

Lymph originates in blood capillaries that pick up tissue fluid.

Accepted Answer

A) True 
 B)False

Question 6

Clonal selection of T cells happens in the thymus.

Accepted Answer

A) True 
 B)False

Question 7

Autoimmune diseases are disorders in which the immune system fails to distinguish __________ from foreign ones.

Accepted Answer

A)   self-immunoglobulins
B)   self-antibodies
C)   self-antigens
D)   self-interleukins
E)   self-complement proteinsF) A) and C)
G) A) and E)

Question 8

Most Memory B cells are found circulating in the lymph.

Accepted Answer

A) True 
 B)False

Question 9

Mucous membranes prevent most pathogens from entering the body because of the stickiness of the mucus and the presence of lysozymes.

Accepted Answer

A) True 
 B)False

Question 10

__________ lacks the capacity to remember a pathogen or react differently to it in the future,whereas __________ utilizes memory cells to adapt to a given pathogen and ward it off more easily in the future.

Accepted Answer

A)   Innate immunity;cytotoxicity
B)   Adaptive immunity;innate immunity
C)   A natural killer cell;a macrophage
D)   Innate immunity;adaptive immunityE) A) and D)
F) A) and C)

Question 11

Humoral immunity produces memory by increasing the number of cells and antibodies that can fight off a pathogen in the secondary response.

Accepted Answer

A) True 
 B)False

Question 12

A(n) __________ is the region of the molecule that is recognized by antibodies.

Accepted Answer

A)   epitope
B)   antigen
C)   hapten
D)   major histocompatibility complex (MH
C)  
E)   antibody monomerF) B) and C)
G) C) and D) A

Question 13

Special lymphatic vessels,called lacteals,absorb dietary __________ that are not absorbed by the blood capillaries.

Accepted Answer

A)   water
B)   glucose
C)   vitamins
D)   amino acids
E)   lipidsF) C) and D)
G) A) and E)

Question 14

Memory T cells can be up to __________ old.

Accepted Answer

A)   weeks
B)   days
C)   decades
D)   years
E)   monthsF) B) and D)
G) A) and C)

Question 15

A person who is HIV-positive and has a helper T (TH) cell count lower than __________ has AIDS.

Accepted Answer

A)   20,000 cells/μL
B)   5,000 cells/μL
C)   1,000 cells/μL
D)   200 cells/μL
E)   50 cells/μLF) B) and E)
G) C) and D) D

Question 16

Which of the following is not an example of lymphatic tissue?

Accepted Answer

A)   Aggregated lymphoid nodule
B)   MALT
C)   Lymphatic nodules
D)   Macrophages
E)   Diffuse lymphatic tissueF) C) and D)
G) A) and E)

Question 17

Which of the following cannot act as antigen-presenting cells?

Accepted Answer

A)   Reticular cells
B)   Dendritic cells
C)   Macrophages
D)   B cells
E)   T cellsF) B) and D)
G) A) and C)

Question 18

Basophils of the blood help to get defensive leukocytes to the site quickly by releasing an anticoagulant called __________ and a vasodilator called __________.

Accepted Answer

A)   bradykinin;histamine
B)   selectin;prostaglandin
C)   histamine;heparin
D)   heparin;histamine
E)   prostaglandins;selectinF) A) and B)
G) B) and D)

Question 19

Complement fixation cannot lead to __________.

Accepted Answer

A)   enhanced inflammation
B)   opsonization
C)   endogenous pyrexia
D)   bacterial phagocytosis
E)   cytolysisF) A) and C)
G) B) and E)

Question 20

Adaptive immunity involves skin,NK cells,and phagocytosis.

Accepted Answer

A) True 
 B)False

Exam 21: The Lymphatic and Immune Systems

__________ participate in both innate immunity and the immune response.

Correct AnswerverifiedD

Cellular immunity uses B cells and humoral immunity uses antibodies.

Correct AnswerverifiedShow Answer

The serum used for emergency treatment of snakebites stimulates __________ immunity.

Correct AnswerverifiedShow Answer

Before B cells secrete antibodies,they differentiate into _________.

Correct AnswerverifiedShow Answer

Lymph originates in blood capillaries that pick up tissue fluid.

Correct AnswerverifiedShow Answer

Clonal selection of T cells happens in the thymus.

Correct AnswerverifiedShow Answer

Autoimmune diseases are disorders in which the immune system fails to distinguish __________ from foreign ones.

Correct AnswerverifiedShow Answer

Most Memory B cells are found circulating in the lymph.

Correct AnswerverifiedShow Answer

Mucous membranes prevent most pathogens from entering the body because of the stickiness of the mucus and the presence of lysozymes.

Correct AnswerverifiedShow Answer

__________ lacks the capacity to remember a pathogen or react differently to it in the future,whereas __________ utilizes memory cells to adapt to a given pathogen and ward it off more easily in the future.

Correct AnswerverifiedShow Answer

Humoral immunity produces memory by increasing the number of cells and antibodies that can fight off a pathogen in the secondary response.

Correct AnswerverifiedShow Answer

A(n) __________ is the region of the molecule that is recognized by antibodies.

Correct AnswerverifiedA

Special lymphatic vessels,called lacteals,absorb dietary __________ that are not absorbed by the blood capillaries.

Correct AnswerverifiedShow Answer

Memory T cells can be up to __________ old.

Correct AnswerverifiedShow Answer

A person who is HIV-positive and has a helper T (TH) cell count lower than __________ has AIDS.

Correct AnswerverifiedD

Which of the following is not an example of lymphatic tissue?

Correct AnswerverifiedShow Answer

Which of the following cannot act as antigen-presenting cells?

Correct AnswerverifiedShow Answer

Basophils of the blood help to get defensive leukocytes to the site quickly by releasing an anticoagulant called __________ and a vasodilator called __________.

Correct AnswerverifiedShow Answer

Complement fixation cannot lead to __________.

Correct AnswerverifiedShow Answer

Adaptive immunity involves skin,NK cells,and phagocytosis.

Correct AnswerverifiedShow Answer

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

lacks the capacity to remember a pathogen or react differently to it in the future,whereas utilizes memory cells to adapt to a given pathogen and ward it off more easily in the future.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

A person who is HIV-positive and has a helper T (T_H) cell count lower than __________ has AIDS.

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Basophils of the blood help to get defensive leukocytes to the site quickly by releasing an anticoagulant called and a vasodilator called .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified