Following provide defense against infections in our digestion tract:
Correct answer: A. HCI in stomach
- A. HCI in stomach
- B. Mucus and cilia in nose/in nasal cavity
- C. Mucus of bronchi
- D. HCl in stomach, Mucus and cilia in nose/in nasal cavity and Mucus of bronchi.
Explanation
HCl kills bacteria present in food. Thus provide defense against infections in our digestion tract.
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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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