Haematology Flashcards
what are the 3 main functions of the blood?
- transport
- immune system
- co-agulation
what are the 2 main composition of blood?
- plasma
- cells
what are the 3 types of cells?
- Red blood cells
- White blood cells
- Platelets
what are the 6 components of plasma?
- lipids
- nutrients
- hormones
- electrolytes
- water
- proteins
where are blood cells mainly produced?
the bone marrow
define anaemia
a low haemocrit (lack of haemoglobin)
what does MCV stand for and what is it?
mean cell volume and it is the SIZE of red blood cells
what is the condition where the blood cells are
- a = too big
- b = too small
a = Macrolytic b = Microlytic
leukopenia is when..
you have to few white blood cells
what is the condition for too many white blood cells?
leukocytosis
what does WCC mean?
the total quantity of white blood cells
what can be done to test the different types of white blood cells?
differential count
thrombocythaemia is when..
you have too many platelets
what is the condition when you have too few platelets?
thrombcytopaenia
what are the two ways to test co-agulation?
1 - APTT (activated partial thromboplastin time)
2 - PT (prothrombin time) / INR (international normalised ratio)
what are the two causes of anaemia?
- lack of haemoglobin
- lack of cells
what are the 3 consequences of anaemia?
- lack of raw materials
- production problems
- longevity problem
what are the raw materials that may lack in anaemia?
- Vit B12
- Iron
- Folate
what can a lack of erythropoetin cause?
renal failure
when may you get an issue in the production process of a red blood cell?
a failure in the bone marrow
what are some of the causes of failure of the bone marrow to produce red blood cells? 4 things
- chemotherapy
- radiotherapy
- haematological malignancy
- chronic inflammatory disease