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Unit 2 Chapter 21

Quiz

QuestionAnswer
True or False: Lymph originates in blood capillaries that pick up tissue fluid. False It originates as tissue fluid taken up by the lymphatic vessels.
__________blank are the largest of the lymphatic vessels, and they empty into the __________blank. Collecting ducts; subclavian veins
Immune surveillance is a process in which __________blank nonspecifically detect and destroy foreign cells and diseased host cells. natural killer (NK) cells
The __________blank tonsils are the largest, and their surgical removal (tonsillectomy) used to be one of the most common surgical procedures performed in children. palatine
The only lymphoid organ(s) with afferent lymphatic vessels is(are) the __________blank. lymph nodes
One group of proteolytic enzymes secreted by natural killer (NK) cells is __________blank. granzymes
Basophils of the blood help to get defensive leukocytes to the site quickly by releasing an anticoagulant called __________blank and a vasodilator called __________blank. heparin; histamine
Which of these cellular agents does not participate in inflammation? Cytotoxic T cells Macrophage Eosinophils Neutrophils Endothelial cells Cytotoxic T cells
One characteristic of the immune response is specificity. This means that __________blank. immunity is directed against a particular pathogen
Vaccination stimulates __________blank immunity. artificial active
True or False: Interleukins are chemical signals by which immune cells communicate with each other. True
Which of the following cannot act as antigen-presenting cells? Dendritic cells Macrophages B cells Antibodies Antibodies
Helper T ( TH ) cells do not __________blank. secrete fever-producing chemicals
Which is the correct sequence of events in the humoral immune response? Antigen recognition → antigen presentation → clonal selection → differentiation → attack
Before B cells secrete antibodies, they differentiate into __________blank. plasma cells
True or False: An allergic reaction is a form of hyposensitivity. False Hypersensitivity
Most common allergies are the result of __________blank. type I (acute) hypersensitivity
Special lymphoid vessels, called lacteals, absorb dietary __________blank that are not absorbed by the blood capillaries. lipids
Lymphatic vessels recover about __________blank of the fluid filtered by capillaries. 15%
T cells achieve immunocompetence in the __________blank. thymus
Which of the following does(do) not belong to the second line of defense? The macrophage system Natural killer cells Inflammation The gastric juices Interferon and the complement system The gastric juices
__________blank are antimicrobial proteins. Interferons
Created by: Gluis5974
 

 



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