Test 81    (physiology)
1. Bleeding time is increased in:
a. massive blood transfusion
b. vitamin K deficiency
c. von Willebrand's disease
d. disseminated intravascular coagulation (DIC)
e. haemophilia A

2. A shift in the oxygen-haemoglobin  dissociation curve to the right 
    occurs in :

a. hypothermia
b. carboxyhaemoglobin
c. acidosis
d. fetal haemoglobin
e. an increase in the 2-3-diphosphoglycerate (2,3-DPG)

3. With regard to blood groups and blood products:

a. the ABO system is inherited in an autosomal dominant 
b. group O and Rhesus positive is the universal donors'
c. stored whole blood contains dextrose, phosphate and 
d. stored blood becomes progressively more acidotic and
    hyperkalaemic with time
e. store blood contains a normal amount of clotting factors

4. The following are true about platelets:

a. they are formed in the bone marrow from 
b. their life span in circulation is about 30 days
c. in a normal person, 20% of the platelets are 
    found in the spleen.
d. they contain adenosine diphophate and 
e. they produce prostacyclin 

5. Haemoglobin SC disease:

a. is common amongst Afro-carribean people
b. does not show sickle cells in the blood film.
c. causes severe anaemia
d. causes retinal vein occlusion
e. is associated with angioid streaks

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