Innate immunity Flashcards Preview

AP Biology 2014 > Innate immunity > Flashcards

Flashcards in Innate immunity Deck (26):
1

type of immunity present before any exposure to pathogens

innate immunity

2

immunity that develops only in vertebrates, following exposure to pathogens

adaptive or acquired immunity

3

 

3 forms of innate immunity present in invertebrates

  1. exoskeleton (only in some invertebrates
  2. lysozymes
  3. hemocytes

4

enzymes that break down bacterial cell walls

lysozymes

5

phagocytic cells in invertebrate immunity

hemocytes

6

5 types of barrier defenses in vertebrates

  1. skin and mucus
  2. saliva and tears
  3. cilia
  4. gastric juice
  5. symbiotic bacteria

7

three types of internal defenses of vertebrate innate immune system

  1. white blood cells
  2. proteins
  3. inflammatory response

8

another name for ALL white blood cells

leukocytes

9

four types of phagocytic leukocytes involved in the vertebrate innate immune resonse

  1. neutrophils
  2. macrophages
  3. eosinophils
  4. dendritic cells

10

most common type of phagocytic white blood cell in vertebrates

neutrophil

11

powerful phagocytic white blood cells that can leave the circulatory system and enter body tissues or the lymphatic system

macrophages 

12

phagocytic white blood cells that discharge destructive enzymes on multicellular invaders

eosinophils

13

phagocytic leukocytes located near body surfaces that stimulate the development of acquired immunity against the invaders they encounter

dendritic cells

14

body system consisting of vessels and nodes; function is to filter the interstitial fluid and trap pathogens

lymphatic system

15

the set of cell surface molecules that allow leukocytes to identify invading cells or damaged self cells

major histocompatibility complex (MHC)

16

cytotoxic cells that attack body cells missing their MHC

natural killer (NK) cells

17

protein released by NK cells that creates pores in a target cell's membrane

perforin

18

enzymes released by NK cells that break down proteins in the target cell

proteases

19

"warning" proteins released by cells that have been infected by viruses to trigger neighboring cells to defend themselves

interferons

20

proteins that attract phagocytes to foreign cells and promote lysis of invading cells

complement system

21

steps the body takes in response to infection, often resulting in pain, heat, redness, swelling

inflammatory response

22

cells that release histamine during the inflammatory response

mast cells

23

chemical that promotes changes in blood vessels during the inflammatory response

histamine

24

a fluid rich in white blood cells, dead microbes and cell debris that accumulates at the site of inflammation

pus

25

chemicals released by macrophages during the inflammatory response that raise the body's thermoregulatory set point in the hypothalamus

pyrogens

26

a life-threatening condition caused by an overwhelming inflammatory response

septic shock