Blood cells

Question 1

what is haematocrit?

Answer 1

the proportion, by vol, of RBC in the blood

Question 2

where is blood drawn from?

Answer 2

venepuncture = cells 
capillaries = small volumes of blood 
arteries = gases

Question 3

Universal blood donor

Answer 3

O

Question 4

Universal blood acceptor

Answer 4

AB

Question 5

what Ab would a Rh+ person have?

Answer 5

Anti-D

Question 6

what is the difference between natural and adaptive Ab?

Answer 6

natural

• have from birth
• not v. specific
• bind to more than 1 ag

adaptive

• develop as a result of a foreign substance
• v. specific
• bind to only 1 ag

Question 7

what blood type is mother and father to cause problems for a rh+ baby?

Answer 7

mother = rh-ve
father = rh +ve

Question 8

disease caused by foetal Rh+ve Ag attacking mother cells

Answer 8

haemolytic disease of the newborn

Question 9

common stain used for analysing blood

Answer 9

leishman’s stain

Question 10

name 3 granulocytes

Answer 10

eosinophil
basophil
neutrophil

Question 11

what cell structures are stained blue in the blood by a basic stain? what pH are they?

Answer 11

RNA/DNA - acidic

Question 12

what cell structures are stained red/pink in the blood by a acidic stain? what pH are they?

Answer 12

Hb + eosinophilic granules - basic

Question 13

what is a reactive lymphocyte?

Answer 13

is a lymphocyte which has become large with increased cytoplasm due to antigen stimulation.