Blood

Question 0

Place the stages of haemostasis in the correct order …

Answer 0

1 = vasoconstriction
2 = platelet aggregation and activation
3 = coagulation cascade
4 = fibrin mesh and a stable clot
5 = fibrinolysis

Question 1

Match the blood type with the correct antigen/antibody profile:
Type A, type B, type O and type AB

Answer 1

A = antigen A with anti-B antibodies
B = antigen B with anti-A antibodies
O = no antigen A or B with anti-A and anti-B antibodies
AB = antigen A and B with no antibodies

Question 2

Chose the appropriate value for the approximate percentage contribution for each group of leucocytes to the total leucocyte population:
Neutrophils, lymphocytes, monocytes, eosinophils, basophils

Answer 2

Neutrophils = 50-70%
Lymphocytes = 20-30%
Monocytes = 2-8%
Eosinophils = 2-4%
Basophils = less than 1%

Question 3

Haemoglobin is composed of …

Answer 3

2 alpha chains, 2 beta chains and 4 haem groups

Question 4

Healthy blood composition if approximately …

Answer 4

45% erythrocytes : 55% plasma

Question 5

Numbers of leucocytes in blood are expressed as…

Answer 5

10 to the power of 9 per litre

Question 6

Plasma protein include …

Answer 6

Globulins, albumins and fibrinogen

Question 7

What are the nutrients required for erythrocytes synthesis?

Answer 7

Ascorbic acid, vitamin B12, folic acid and iron

Question 8

Where is the main site of blood cell production?

Answer 8

Bone marrow

Question 9

Which of the following statements are correct for erythrocytes:

• do not contain a nucleus
• produced in bone marrow and matured in liver
• contains a nucleus
• produced in bone marrow and destroyed in liver

Answer 9

Do not contain a nucleus and produced in bone marrow and destroyed in liver