UNIT 6-8 PRACS

Question 1

Counting chamber are seen under what miscroscope lens

Answer 1

SCANNING OBJ

Question 2

The entirety

Answer 2

primary squares

Question 3

Also called secondary corner
squares;

○ When viewing one secondary
square, we then switch to LPO.

Answer 3

secondary squares

Question 4

squares in the middle
portion

Answer 4

Tertiary squares

Question 5

smaller squares in
the middle portion

Answer 5

small central squares

Question 6

THICKER AND SHORTER than WBC

Answer 6

RBC THOMA

Question 7

With graduations: 0.5, 1, 101

Answer 7

RBC

Question 8

LONGER BUT THINNER than RBC

Answer 8

WBC

Question 9

With graduations: 0.5, 1, 11

Answer 9

WBC

Question 10

Has larger bore

Answer 10

WBC

Question 11

1.) Thick cover slip

2.) Suction device

Answer 11

ACCESSORY DEVICES

Question 12

volume of bulb: RBC pipette

Answer 12

100 UNITS

Question 13

volume of bulb of WBC

Answer 13

10 units

Question 14

Bore size for the RBC is smaller, for WBC is larger.

Answer 14

TRUE

Question 15

RBC OVERALL CAPACITY

Answer 15

101 UNITS

Question 16

WBC OVERALL CAPACITY

Answer 16

10 UNITS

Question 17

HOW MANY PARALLEL PLATFORMS SA IMPROVED NEUBAUER?

Answer 17

3 parallel platforms

Question 18

1 primary square is equal to

Answer 18

3 x 3mm (9sqmm)

Question 19

4 corner secondary squares is equal to

Answer 19

0.25 x 0.25 mm

Question 20

central secondary square is equal to

Answer 20

0.2 x 0.2 mm

Question 21

how many tertiary squares for RBC count for IMPROVED NEUBAUER

Answer 21

5 of the 25 tertiary squares

Question 22

how many tertiary squares for WBC count in IMPROVED NEUBAUER

Answer 22

16 tertiary squares

Question 23

how many tertiary squares for RBC count for NEUBAUER

Answer 23

5 of the 16 tertiary squares

Question 24

The Fuchs-Rosenthal counting

grid has an area of?

and a depth of?

Answer 24

4 mm x 4mm

depth 0.2mm

Question 25

depth of speirs levy

Answer 25

0.2mm

Question 26

The area is arranged into 2 horizontal rows of 5 squares.

Answer 26

speirs-levy

Question 27

total area of speirs levy

Answer 27

1x1mm (total area of 10sq mm)

Question 28

used in counting the cellular elements of the blood.

Answer 28

HEMACYTOMETER

Question 29

RBC has smaller bore compared to WBC pipette. TRUE OR FALSE?

Answer 29

TRUE

Question 30

MUST BE A HYPOTONIC SOLUTION

Answer 30

TRUE- WBC DILUTING FLUID

Question 31

how many drops should be discarded in WBC thoma

Answer 31

2-3 drops

Question 32

dispensing using thoma pipette in the neubauer counting chamber.

Answer 32

Charging

Question 33

locate the ruled area for WBC counting by focusing the microscope using?

Answer 33

LPO

Question 34

INVERTED L-shape METHOD

Answer 34

WBC

Question 35

Count the WBCs seen on the 4 secondary squares designated as W squares with an area of ?

Answer 35

4 mm2

Question 36

Record the count on each of the 4 secondary squares making sure that the cell difference between the squares is ?

Answer 36

12 or less

Question 37

Normal Range: 4,500 – 11,500 WBCs / mm³

Answer 37

WBC

Question 38

4 𝑚𝑚² 𝑋 1/10 𝑚𝑚 𝑋 1/20

Answer 38

divide mo total number of cells counted WBC

Question 39

Nature sample Operator’s error Due to problematic equipment Internal / field errors

Answer 39

sources of errors

Question 40

The number of erythrocytes contained in 1 liter of blood is

Answer 40

erythrocyte number concentration.

Question 41

what is the Characteristic of a good RBC diluting fluid?

Answer 41

ISOTONIC

Question 42

Best RBC Diluting Fluid (cell shape is not altered) Can be stored for long periods of time

Answer 42

DACIE’s/ Formol citrate

Question 43

composition of formol citrate

Answer 43

40% solution of formaldehyde = 10.0mL 3% W/V trisodium citrate = 990.0mL

Question 44

Not much recommended ● No corrosive effect ● Allows growth of Yeast ● Produces clumping of cells

Answer 44

HAYEMS

Question 45

Prevents Rouleaux formation Precipitates protein in hemoglobinemia and hyperglobulinemia.

Answer 45

GOWERS

Question 46

Supports growth of fungi ● High specific gravity ● Can stain WBC

Answer 46

TOISSON’s

Question 47

Used in emergency cases and excessive rouleaux formation and auto-agglutinated cells.

Answer 47

NSS

Question 48

how many drops should be discarded in RBC Thoma?

Answer 48

5-6 drops

Question 49

angle of the pipette while charging in RBC

Answer 49

30-35 degrees

Question 50

RBCs that touch any of the lines on the ________ borders, even if they are outside the tertiary square, are included.

Answer 50

TOP AND LEFT

Question 51

Record the count on each of the 5 tertiary squares making sure that the cell difference between two squares is

Answer 51

20 or less

Question 52

All counts must be done in duplicate. TRUE OR FALSE?

Answer 52

TRUE

Question 53

REFERENCE RANGE OF RBC

Answer 53

4.5-6.0x10¹²/L

Question 54

Errors due to materials/equipment Operator’s technical errors Errors due to nature of sample

Answer 54

Sources of Error in RBC Counting

Question 55

reference range for female for RBC

Answer 55

4.0-5.5 M/cumm

Question 56

reference range for preganants

Answer 56

3.0-5.0 M/cumm

Question 57

reference range for at birth

Answer 57

At birth = 7.0 M/cumm

Question 58

Convenient; ○ Employs the use of pre-measured volume of diluting fluid in a plastic reservoir; ○ Specific amount of blood is collected.

Answer 58

unopette system