HEMA W2:1

Question 1

Originated from Greek word “Haima” meaning blood and “Logos” meaning study.

Answer 1

HEMATOLOGY

Question 2

discipline that studies the development of cells and diseases present in blood

Answer 2

Hematology

Question 3

Described as worms in the blood

Answer 3

Athanasius Kircher 1657

Question 4

Discovery of erythrocytes (RBC)

Answer 4

Swammerdam
1658

Question 5

Human erythrocytes were described

Answer 5

Anton Van Leeuwenhoek 1674

Question 6

Platelets were described as
petites plaques

Answer 6

Guilio Bizzozero 1842

Question 7

Polymorphonuclear neutrophils is distinguished from other leukocytes

Answer 7

Wharton James 1846

Question 8

First complete classification of leukocytes was established

Answer 8

Paul Ehrlich 1879

Question 9

Development of Wright’s stain for cell staining

Answer 9

James Homer Wright 1902

Question 10

Hematology was considered separate science from clinical pathology

Answer 10

1920

Question 11

Automated analyzers are now able to differentiate and enumerate cells from one another

Answer 11

Present

Question 12

➢ Wright’s stain technique remains as the foundation in blood cell identification through the practice of preparing a peripheral blood smear
➢ It has the capability to observe the morphology of the cells unlike the automated analyzers

Answer 12

Present

Question 13

The blood is always in the

Answer 13

fluid state in VIVO (inside the body)

Question 14

But coagulates withi

Answer 14

5-10 minutes in VITRO (outside)

Question 15

almost in a neutral phase but changes
in the presence or the absence of a certain gas

Answer 15

Blood

Question 16

Arterialblood

Answer 16

Bright red

Question 17

Dark purplish red (sometimes even darker)
• Has a deoxygenated property because it
passes through the veins where waste
materials are locate
• Contains Carbon Dioxide rich red cells
(CO2)

Answer 17

Venous blood

Question 18

Blood pH

Answer 18

7.35-7.45

Question 19

If the blood is filled with oxygen →

Answer 19

More alkaline

Question 20

Average pH

Answer 20

7.40

Question 21

• Oxygenated blood (O2)
• Higher pH or normal
• Alkaline to Neutral pH

Answer 21

Arterial blood

Question 22

Acidic State (Lower pH because CO2 is an acidic gas)

Answer 22

Venous blood

Question 23

Specificgravityofbloodis

Answer 23

1.0555

Question 24

Specificgravityofwateris

Answer 24

1.00

Question 25

blood is _____x more viscous and thicker than water
o It’sbecausebloodcontainstheproteinsand
solutes

Answer 25

3.5-4.5

Question 26

ml of blood contributes to the per kilogram of body weight

Answer 26

75-85mL

Question 27

NORMAL BLOOD VOLUME
o Male adult

Answer 27

5-6L

Question 28

NORMAL BLOOD VOLUME
o Female adult

Answer 28

4-5L

Question 29

NORMAL BLOOD VOLUME
o Newborn:

Answer 29

150-350mL

Question 30

NORMAL BLOOD VOLUME
o Average (Adult):

Answer 30

5 L