test 2

the primary function of the lymphatic system is

a. the production and maturation of leukocytes

b. the transport of hormones

c. circulation of nutrients and dissolved gases

d. the production and distribution

e. defending the body against both external and internal threats

e

most of the lymph returns to the venous circulation by way of the

a. cisterna chyli

b. right lymphatic duct

c. hepatic portal vein

d. Dural sinus

e. thoracic duct

e

lymph fluid enters the venous circulation via the

a. superior and inferior vena cava

b. brachiocephalic trunk

c. jugular veins

d. right atrium

e. subclavian veins

e

_______ are large lymphatic nodules that are located in the walls of the pharynx

a. tonsils

b. peyers patches

c. immune complexes

d. spleens

e. lymph nodes

a

immunity that results from antibodies that pass through the placenta from mother to fetus is called ________ immunity

a. naturally acquired active

b. naturally acquired passive

c. artificially acquired passive

d. innate

e. artificially acquired active

b

an inflammatory response is triggered when

a. blood flow to an area increases

b. red blood cells release pyrogens

c. T cells release inferon

d. mast cells release histamine and heparin

e. neutrophils phagocytize bacteria

D

immunoglobulins that attach to and sensitive mast cells and basophils are

a. IgA

b. IgD

c. IgE

d. IgG

e.IgM

C

immunity that is genetically determined and present at birth is called

a. passive

b. innate

c. natural passive

d. auto

e. active

b

the release of endogenous pyrogen (or interleukin-1) by active macrophages would

a. produce a fever

b. cause inflammation

c. active complement

d. opsonize pathogens

e. active antibodies

a

the only cells that directly attack and kill other cells as part of cellular immunity are the _ cells

a. dendritic
b. cytotoxic T

c. helper T

d. plasma

e. suppressor T

B

the classic pathway of complement activation begins when the protein C1 binds to

a. cell surface antigen

b. the plasma membrane of bacteria

c. two antibodies attached to an antigen

d. the cell wall of bacteria

e. plasma protein

C

defense of the body against a particular pathogen is provided by

a. innate immunity

b. adaptive immunity

c. skin defenses

d. immunological surveillance

e. fever

b

___ cells enable the immune system to respond quickly and robustly if the same antigen is encountered a second time

a. primary

b. transponder

c. secondary

d. memory

e. responder

d

class II MHC protein are present in the plasma membrane only when

a. the body cells are healthy

b. a helper T cells has engulfed an antigen

c. a cancerous cell gets attacked by NK cells

d. an antigen-presenting cell has engulfed and is processing an antigen

e. a virus-infected cell secretes interferons

d