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A&P Test 3

QuestionAnswer
First line of defense Skin and Mucous Membranes
Second line of defense Internal Defenses
Forms physical barrier to entrance of microbes Skin
Inhibit entrance of many microbes, but not as effective as skin Mucous membranes
Traps microbes in respiratory and gastrointestinal tracts Mucus
Filter out microbes and dust from in nose Hairs
Together with mucus, trap and remove microbes and dust from upper respiratory tract Cilia
Tears dilute and wash away irritating substances and microbes Lacrimal apparatus
Washes microbes from surfaces of teeth and mucous membranes of mouth Saliva
Washes microbes from urethra Urine
Expel microbes from body Defecation and vomiting
Forms protective acidic film over skin surface that inhibits growth of many microbes Sebum
Antimicrobial substance in perspiration, tears, saliva, nasal secretions, and tissue fluids Lysozyme
Destroys bacteria and most toxins in stomach Gastric juice
Slight acidity discourages bacterial growth; flush microbes out of vagina Vaginal secretions
Protect uninfected host cells from viral infection Interferons
Causes cytolysis of microbes; promotes phagocytosis; contributes to inflammation Complement system
Inhibit growth of certain bacteria by reducing amount of available iron Iron-binding proteins
Have broad-spectrum antimicrobial activities and attract dendritic cells and mast cells Antimicrobial proteins
Kill infected target cells by releasing granules that contain performing and granzymes; phagocytes then kill and release microbes Natural Killer Cells
Invest foreign particulate matter Phagocytes
Confines and destroys microbes; initiate tissue repair Inflammation
Intensifies effects of interferons; inhibits growth of some microbes; speeds up body reactions that aid repair Fever
Created by: carrhaley01
 

 



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