13) Natural killer (NK) cells A) are cells of the adaptive immune system B) are also called cytotoxic T cells C) are a type of phagocyte D) can kill cancer cells before the immune system is activated 14) Which of the following is the correct sequence of events in phagocytosis? A) ingestion, adherence, chemotaxis, digestion, killing B) chemotaxis, adherence, ingestion, digestion, killing C) adherence, digestion, killing, ingestion, chemotaxis D) chemotaxis, ingestion, digestion, adherence, killing 15) The redness and heat of an inflamed area are due to a local hyperemia caused by A) production of complement and interferon B) vasoconstriction D) vasodilation C) phagocyte mobilization17) Lymph circulation involves all the following EXCEPT A) smooth muscle contraction in the lymph capillary walls B) thorax pressure changes during breathing C) lymph capillary minivalve action D) squeezing action of active skeletal muscle fibers.

1. 13) Natural killer (NK) cells A) are cells of the adaptive immune system B) are also called cytotoxic
T cells C) are a type of phagocyte D) can kill cancer cells before the immune system is activated
14) Which of the following is the correct sequence of events in phagocytosis? A) ingestion,
adherence, chemotaxis, digestion, killing B) chemotaxis, adherence, ingestion, digestion, killing C)
adherence, digestion, killing, ingestion, chemotaxis D) chemotaxis, ingestion, digestion,
adherence, killing 15) The redness and heat of an inflamed area are due to a local hyperemia
caused by A) production of complement and interferon B) vasoconstriction D) vasodilation C)
phagocyte mobilization17) Lymph circulation involves all the following EXCEPT A) smooth muscle
contraction in the lymph capillary walls B) thorax pressure changes during breathing C) lymph
capillary minivalve action D) squeezing action of active skeletal muscle fibers