Exam 3 BIOS 242 Study Guide
Exam 3 BIOS 242 Study Guide – UPDATED Questions with 100%
Verified Answers
BIOS 242
Exam 3 BIOS 242 Study Guide
Q1 Hosts first line of defense-- innate (nonspecific)
A physical barriers and chemical barriers
Q2 Hosts second line of defense--innate (nonspecific)
A phagocytosis inflammation fever antimicrobial proteins
Q3 Hosts third line of defense (acquired specific)
A attracted to sites of parasitic infection; plays a minor phagocytic role in antigen (antibody
reactions)
Q4 Function of monocytes
A Largest of white blood cells cytoplasm holds granules containing digestive enzymes
discharged by bone marrow into bloodstream
Q5 Function of macrophages
A monocytes that have left the blood circulation; long-lived and able to multiply; among most
versatile and important of cells
Q6 Function of neutrophils
A react early in inflammatory response to bacteria, foreign materials and damaged tissue;
common sign of bacterial infection is high neutrophil count
Q7 Function of basophils
A play a part in immune surveillance; release the histamine in their granules during an allergic
reaction or asthma attack
Page 1
, Exam 3 BIOS 242 Study Guide
Q8 Five signs of inflammation
A rubor color tumor dolor loss of function
Q9 What is an antigen
A chemical substance that stimulate a response by T and B cells; protein or polysaccharide
molecules on or inside cells/ciruses
Q10 Two characteristics of the 3rd line of defense
A Specify - highly specific to the antigen against which the 3rd lines of defense is directed;
Memory - the rapid mobilization of lymphocytes that have been programmed to recall their
first engagement with the invader and rush to the attack again.
Q11 Where do T cells mature?
A thymus
Q12 Where do B cells mature?
A bone marrow
Q13 Function of T helper cells
A Activate macrophages, assist b-cell processes, and help activate cytotoxic T cells
Q14 Function of regulatory T cells
A - Chemically or directly stimulate proliferation of other T cells - Stimulate B cells that have
already become bound to antigen
Q15 Function of cytotoxic T cells
A lead to the destruction of infected host cells and other "foreign" cells
Q16 Function of plasma
A prodice antibodies
Page 2
Exam 3 BIOS 242 Study Guide – UPDATED Questions with 100%
Verified Answers
BIOS 242
Exam 3 BIOS 242 Study Guide
Q1 Hosts first line of defense-- innate (nonspecific)
A physical barriers and chemical barriers
Q2 Hosts second line of defense--innate (nonspecific)
A phagocytosis inflammation fever antimicrobial proteins
Q3 Hosts third line of defense (acquired specific)
A attracted to sites of parasitic infection; plays a minor phagocytic role in antigen (antibody
reactions)
Q4 Function of monocytes
A Largest of white blood cells cytoplasm holds granules containing digestive enzymes
discharged by bone marrow into bloodstream
Q5 Function of macrophages
A monocytes that have left the blood circulation; long-lived and able to multiply; among most
versatile and important of cells
Q6 Function of neutrophils
A react early in inflammatory response to bacteria, foreign materials and damaged tissue;
common sign of bacterial infection is high neutrophil count
Q7 Function of basophils
A play a part in immune surveillance; release the histamine in their granules during an allergic
reaction or asthma attack
Page 1
, Exam 3 BIOS 242 Study Guide
Q8 Five signs of inflammation
A rubor color tumor dolor loss of function
Q9 What is an antigen
A chemical substance that stimulate a response by T and B cells; protein or polysaccharide
molecules on or inside cells/ciruses
Q10 Two characteristics of the 3rd line of defense
A Specify - highly specific to the antigen against which the 3rd lines of defense is directed;
Memory - the rapid mobilization of lymphocytes that have been programmed to recall their
first engagement with the invader and rush to the attack again.
Q11 Where do T cells mature?
A thymus
Q12 Where do B cells mature?
A bone marrow
Q13 Function of T helper cells
A Activate macrophages, assist b-cell processes, and help activate cytotoxic T cells
Q14 Function of regulatory T cells
A - Chemically or directly stimulate proliferation of other T cells - Stimulate B cells that have
already become bound to antigen
Q15 Function of cytotoxic T cells
A lead to the destruction of infected host cells and other "foreign" cells
Q16 Function of plasma
A prodice antibodies
Page 2
