The lungs are perfused by two circulations:
the pulmonary and the bronchial. The pulmonary circulation is for oxygenation of blood. The bronchial circulation supplies blood to the lung structures (tissue).
Indicate whether the statement is true or false
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Question 2) B cells must accomplish double recognition:
They must simultaneously recognize self and nonself to be activated.
Indicate whether the statement is true or false
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Question 3) Phagocyte mobilization involves ________.
A) monocytes as the most active phagocyte
B) diapedesis, during which cells line up against the capillary wall
C) mainly neutrophil and macrophage migration into inflamed areas
D) margination, which is the process of white cell movement through the walls of capillaries into injured tissues
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Question 4) The functions of the nasal conchae are to enhance the air turbulence in the cavity and to increase the mucosal surface area exposed to the air.
Indicate whether the statement is true or false
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Question 5) Monoclonal antibodies are used in clinical laboratory diagnosis because they bind to many antigenic determinates.
Indicate whether the statement is true or false
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Question 6) Fever is often a beneficial immune response because it can speed the activities of leucocytes.
Indicate whether the statement is true or false
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Question 7) The olfactory mucosal lining of the nasal cavity contains the receptors for the sense of smell.
Indicate whether the statement is true or false
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Question 8) Which of the following statements is incorrect or false?
A) Class I MHC molecules are built into the plasma membranes of all body cells.
B) Class II MHC molecules appear only on the surface of antigen-presenting cells, thymic cells, and T cells that have been activated by exposure to antigens.
C) Haptens lack immunogenicity unless attached to protein carriers.
D) MHC proteins are the cell's identity markers.
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Question 9) Ventilation perfusion coupling means that more blood flows past functional alveoli than past nonfunctional alveoli.
Indicate whether the statement is true or false
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Question 10) Innate immune system defenses include ________.
A) T cells
B) B cells
C) plasma cells
D) phagocytosis
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