Phagocytosis

Question 1

Process by which specialized cells engulf and destroy foreign particles such as microorganisms or damaged cells.

Answer 1

Phagocytosis

Question 2

Most important phagocytic cells

Answer 2

Macrophages and Neutrophils

Question 3

A cell that ingests microorganisms and foreign particles.

Answer 3

Phagocytic cells

Question 4

Extremely small, relatively simple prokaryotic microorganisms traditionally classified with the fungi as Schizomycetes.

Answer 4

Bacteria

Question 5

Something that suggests the presence or existence of a fact, condition, or quality

Answer 5

Signs

Question 6

Any indication of a disease or injury perceived by the patient

Answer 6

Symptoms

Question 7

The site of the experiment should be..

Answer 7

Sterilized

Question 8

Blood should be drawn by an…

Answer 8

Aseptic technique

Question 9

A minimum of 2 ml of blood is put into the

Answer 9

Green-top evacuated tube

Question 10

A green top tube has what kind of anti-coagulant

Answer 10

Heparin

Question 11

(True or False)
The microscope shouldn’t be placed on a plain, stable surface.

Answer 11

False

Question 12

(True or False)
The voltage of the power supply should be inclined with that of the equipment.

Answer 12

True

Question 13

What organism should we use in this experiment

Answer 13

Bacillus subtilis or Staphylococcus epidermidis

Question 14

What stain is used in the experiment

Answer 14

Wright stain

Question 15

How many drops of buffy coat should be added

Answer 15

4-8 drops

Question 16

How many drops of bacterial broth culture is added?

Answer 16

2-3 drops

Question 17

(True or False)
Place 2 drops of the incubated specimen on a glass slide and prepare a smear.

Answer 17

False

Question 18

(Interpret)
Demonstration of the engulfment of bacteriaz

Answer 18

Positive

Question 19

(Interpret)
No engulfment of bacteria

Answer 19

Negative

Question 20

(True or False)
The procedure may produce false-negative results if the blood specimen is not fresh.

Answer 20

True

Question 21

(True or False)
Coagulase-positive Staphylococcus specimen may produce false-positive results.

Answer 21

True

Question 22

(Interpret)
Bacteria is not intracellular

Answer 22

Negative

Question 23

(True or False)
The bacteria must be intracellular and not extracellular for the test to be positive.

Answer 23

True

Question 24

The failure of phagocytes to engulf bacteria can support the diagnosis of what?

Answer 24

Neutrophilic dysfunction

Question 25

Action of a specialized group of phagocytic cells that provide a defense mechanism against invasion by engulfing foreign particulate matter.

Answer 25

Phagocytosis

Question 26

Constitute the major cellular components (mast cells, neutrophils, macrophages)

Answer 26

Phagocytes

Question 27

Activated phagocytes have increased surface receptors that allow for adherence to the bacterium

Answer 27

Initiation

Question 28

Process in which cells tend to move in a certain direction under the stimulation of chemical substance.

Answer 28

Chemotaxis

Question 29

Shows positive chemotaxis

Answer 29

Leukocytes

Question 30

Away from the stimulating substances

Answer 30

Negative Chemotaxis

Question 31

Toward the stimulating substances

Answer 31

Positive Chemotaxis

Question 32

By active ameboid motion; final structure is known as vacuole/phagosome; bacteria must be hydrophobic than the phagocyte

Answer 32

Engulfment

Question 33

Interact with the surfaces of bacteria, rendering them acceptable to the phagocyte

Answer 33

Opsonin

Question 34

Engulfment of antigen

Answer 34

Phagosome

Question 35

Fusion of phagosome and lysosome

Answer 35

Phagolysosome

Question 36

Minute cell particles that contain certain hydrolytic enzymes and peroxides approach the phagosome, fuse with it, rupture, and discharge content to it.

Answer 36

Digestion

Question 37

Has defensins and cathepsin-G

Answer 37

Oxygen independent

Question 38

Formation of superoxide ---> hydrogen peroxide ---> hypochlorite

Answer 38

Oxygen dependent (oxidative burst)

Question 39

Physical contact between the phagocytic cell and the microorganism occurs, aided by opsonins.

Answer 39

Adherence

Question 40

Outflowing of cytoplasm to surround the microorganism

Answer 40

Engulfment

Question 41

Microorganism is completely surrounded by a part of the cell membrane.

Answer 41

Formation of phagosome

Question 42

Lysosomal granules contact and fuse with the phagosome.

Answer 42

Granule contact

Question 43

Contents of the lysosome are emptied into this membrane-bound space.

Answer 43

Formation of phagolysosome

Question 44

Uses hydrolytic enzymes

Answer 44

Digestion of microorganisms

Question 45

Contents of phagolysosome are expelled to the outside by exocytosis

Answer 45

Excretion