_included in second defense line.
Correct answer: C. Neutrophils
- A. Skin
- B. Mucus
- C. Neutrophils
- D. Saliva
Explanation
Once pathogens are able to neutralize the responses from the first line of defense i.e. skin and mucous membrane and are bale to penetrate inside the body they are encounter by the second line of defense which is nonspecific because it handles a variety of microbes. Nonspecific defense includes macrophages, neutrophils, natural killers cells, the complement system etc.
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About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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