Question

question 3
2.5 pts
which line of defense results in inflammation and phagocytosis?
○ first line
○ second line
○ third line
○ fourth line
question 4
2.5 pts
few microbes can survive in the acidic stomach.
○ true
○ false

Explanation:

Question 3

The body's second line of defense includes non - specific immune responses. Inflammation is a part of the body's response to injury or infection, and phagocytosis (where cells like macrophages engulf pathogens) is also a key process in the second line of defense. The first line is physical and chemical barriers (like skin, mucus), the third line is specific (adaptive) immunity, and there is no fourth line of defense in the standard immune system model.

The stomach has a highly acidic environment (due to hydrochloric acid). This acidic pH is very harsh for most microbes, and as a result, few microbes are able to survive in the stomach.

Answer:

B. second line

Question 4