Immune REeposne

Question 1

What are the physical barriers that stop infection?

Answer 1

skin, mucous membranes, tears, earwax, mucus, and stomach acid

Question 2

How does each barrier work?
Skin

Answer 2

Skin- Secrets sebum which lowers pH. Inhabitibal for pathogen growth. Swear contains salts which is hard for bacteria to survive.

Question 3

Tears and eyelashes?

Answer 3

Tears contain lysozymes which r enzymes which destroy bacterial cells. Prevent enters of pathogens to eye. Eye lashes- blink.

Question 4

Respiratory tact?

Answer 4

Mucus and ciliated cells.

Question 5

Digestive system?

Answer 5

Stomach acid low pH (1.5-2.5)
Inhospitable for pathogen.

Question 6

Describe the process of phagocytosis

Answer 6

(cellular process where specialized immune cells called phagocytes engulf and destroy foreign particles, pathogens, and cellular debris, ultimately contributing to the body’s defense mechanisms.) pasted from google.

Question 7

What is inflammation?

Answer 7

Histamine triggers dilation of blood vessels and permeability of capillary walls.
Phagocytes, macrophages and natural killer cells fight infection r attached to site of infection.
Chemoxatis

Question 9

What are the physical barriers that stop infection?

Answer 9

skin, mucous membranes, tears, earwax, mucus, and stomach acid