Immunity

Question 1

Immunie system

pathogens

Answer 1

• virus

protazoa

bacteria

funci

parasite

Question 2

immune system 3 layers

Answer 2

external barrier

innate immunity

adaptive immunity

Question 3

explain external barrier immunity

Answer 3

must attach and penetrate epithelial layers:

skin

mucus - coat cell surfaces

epithelial cells of the nasal passage and bronchi both have (cilia) hair-like structure remove with sneezing and coughing

flughing action of saliva, tears, urine

chemical barrier: sweat high NaCl, stomach digestive enzymes ph

Question 4

barrier innate immunity

Answer 4

phagocyte, compliment, mast cell

Question 5

barrier adaptive immunity

Answer 5

B lymphocytes, T lymphocytes

Question 6

innate response

Answer 6

non specific:

distinguish between human cell and pathogen - but not different type of pathogen

fast and immediate: first come into play

no memory: will produce the same response

Question 7

adaptive response

Answer 7

Highly specific:

distinguin between pathogenwhile T lymphocytes are components of adaptive immunity as they differentiated to cytotoxic T cells and helper T cells. based on shame oof surface (antigen)

slower: can take few days to cdevelop

immunological memory: memory cells remember.

Question 8

phagocyte

Answer 8

cell eating

trach down engulf and destroy bacteria and own dead cells

Question 9

phagocyte cells

Answer 9

Neutrophils - contain granules filed destructive enzymes. most abundant WBC 50%-60%

monocytes (macrophages) - break down pathogen process components of pathogen caled antigen to produce specific immune response in form of Ab and cytotoxic T cells

(ANTIGEN PRESENTING CELLS) APCs

Question 10

bacertia common causes

Answer 10