Nonspecific Immune System Pt 1

Question 1

nonspecific immune system aka

Answer 1

innate immune system

Question 2

purpose of immune responses in general

Answer 2

identify + eliminate foreing invaders

Question 3

nonspecific immune system overview

Answer 3

• body’s first line of defense
• same response to all threats trying to enter body
• acts quickly to destroy large numbers of pathogens

Question 4

nonspecific immune system consists of

Answer 4

physical + chemical barriers to prevent pathogens from entering body

Question 5

integumentary system roles (2)

Answer 5

• skin creates physical barrier few pathogens can penetrate

- tears and sweat on skin surface produce environment where only normal flora can grow

Question 6

normal flora

Answer 6

• aka good bacteria

- produce lactic acid that inhibits growth of pathogenic bacteria

Question 7

pathogenic bacteria

Answer 7

disease-causing bacteria

Question 8

digestive system role

Answer 8

stomach acid + digestive secretions destroy microorganisms

Question 9

respiratory system role

Answer 9

mucus membranes trap pathogens, cilia push them up to be coughed + spit out (or swallowed + destroyed in stomach)

Question 10

inflammatory response functions (2)

Answer 10

• dilates blood vessels –> increased blood flow to infected region –> more immune cells brought to area
• makes person aware of infection

Question 11

inflammatory response symptoms

Answer 11

• swelling
• pain
• redness

Question 12

fever caused by

Answer 12

pyrogens (type of interleukin) increasing thermostatic set point of body

Question 13

functions of increased body temp (3)

Answer 13

• interferes with pathogens ability to grow and replicate
• causes lysosomes to break down –> release enzymes that lyse infected cells
• promotes activity of white blood cells

Question 14

lyse

Answer 14

act of lysosomes releasing enzymes that destroy infected cells