non specific defense (infection and disease)

Question 1

How does skin defend from infection?

Answer 1

Stops entry of microorganisms unless cut openings protected by other defenses such as bacteria, sebum and sweat

Question 2

how does bacteria prevent infection?

Answer 2

: live on skin in areas pathogens may occupy

Question 3

how does sebum prevent bacteria?

Answer 3

oily secretions that contain substances that kill pathogenic bacteria

Question 4

how does sweat prevent infection?

Answer 4

Contains salt and fatty acids that prevent growth of microorganisms (slightly acidic)

Question 5

How do Mucous Membranes defend the body?

Answer 5

Line Body cavities to exterior
Secretes mucous: inhibits entry + traps pathogens
Digestive, urinary + reproductive tracts

Question 6

Hairs protecting the body

Answer 6

Nose +ears

Along with mucous traps 90% particles

Question 7

How does cilia protect body from infection?

Answer 7

In the Nose, trachea + airways
Beating moves mucous towards throat
- Cough or swallowed

Question 8

Acid preventing infection

Answer 8

Prevents growth of microorganism

- Stomach + vaginas

Question 9

Lysosome as protection

Answer 9

Enzyme that kills bacteria

Tears, saliva, sweat, nose secretion + tissue fluid

Question 10

Cerebrum protecting body from infection

Answer 10

Ear wax: protects ear from infection

- Slightly acidic + contains lysosomes

Question 11

Flushing Actions protecting body from infection

Answer 11

Bodily fluids such as tears, sweat, saliva, or urine

• Prevents growth + bacteria from reaching organs
  e. g kidney or bladder