Physiology MCQ on Hematology and the circulatory system is available for you for free on Medicalfond with other related mcq on general physiology
1.
The
following are the functions of thrombin except:
a) Activates factor XlI.
b) Inactivates factors V and VIII.
c) Enhance platelet aggregation
d) Formation of more thrombin
2.
Concerning
the functions of plasma proteins, all the following statements are true except:
a) Facilitate retention of fluid in the blood vessels.
b) Play an important role in blood clotting,
c) Bind and transport certain hormones.
d) Transport O2 in blood.
3.
All
the following statements about thromboxane A2 are true except:
a) It's directly inactivated by aspirin binding.
b) Synthesis of thromboxana A2 is arrested by aspirin.
c) It's derived from arachidonic acid.
d) It's a potent stimulus of platelet aggregation.
4.
The
following are the functions of thrombin except:
a) Activates factor XlI.
b) Inactivates factors V and VIII.
c) Enhance platelet aggregation
d) Formation of more thrombin
5.
Concerning
the functions of plasma proteins, all the following statements are true except:
a) Facilitate retention of fluid in the blood vessels.
b) Play an important role in blood clotting,
c) Bind and transport certain hormones.
d) Transport O2 in blood.
6.
Bacteria
become tasty to neutrophil by:
a) Endocytosis.
b) Opsonizaion.
c) Chemotaxis.
d) Pinocytosis.
7.
Bactericidal
agents are:
a) H202
b) Hypchlorite.
c) OH
d) All of the above.
8.
Factor
XII activation occurs due to all except:
a) Exposure to collagen.
b) Collection of blood in silicon coated tubes.
c) Release of platelet phospholipids.
d) Blood contact with glass.
9.
Platelet
plug is limited to site of injury due to:
a) Thromboxane A2.
b) vWF.
c) Prostacyclin.
d) ADP
10.
Anemia
is associated with all of following except:
a) Low blood pressure.
b) Dizziness.
c) Muscle weakness.
d) Decreased work load on heart.
11.
Choose
the correct statement about serum:
a) Fluid remaining after clot is removed.
b) Fibrinogen is present.
c) Clotting factors V, VIII are present.
d) None of the above.
12.
Choose
the function of fibrinogen:
a) Blood viscosity
b) Blood clotting,
c) a +b.
d) Effective osmotic pressure.
13.
Regarding
Hbs "sickle cell anemia":
a) It occurs in 10-20% of Negros
b) It increased blood viscosity.
c) Caused by substitution of amino acid.
d) All of the above.
14.
All
of the following are causes of anemia except:
a) Dietary deficiency of folic acid.
b) Deficiency of intrinsic factor.
c) Living at high altitude.
d) Carbon monoxide poisoning.
15.
Select
the platelet count percubic millimeter that's within the normal range:
a) 80.000
b) 200.000
c) 800.000
d) 130.000
16.
Which
isn't step in hemostasis:
a) Vascular spasm.
b) Platelet aggregation
c) Coagulation
d) Thrombopoiesis.
17.
The
chemical signal that makes platelet sticky upon aggregation is:
a) ADP
b) ATP
c) Prostacyclin
d) Thromboxane
18.
Exposed
collagen in a damaged vessel:
a) Activates factor XI to initiate blood clotting,
b) Initiate platelet aggregation.
c) Secretes ADP.
d) Both (a) & (b).
19.
The
extrinsic clotting pathway:
a) Starts by factor XII.
b) Clots blood in tissues.
20.
Which
isn't step in hemostasis:
a) Vascular spasm.
b) Platelet aggregation
c) Coagulation
d) Thrombopoiesis.
21.
The
chemical signal that makes platelet sticky upon aggregation is:
a) ADP
b) ATP
c) Prostacyclin
d) Thromboxane
22.
Exposed
collagen in a damaged vessel:
a) Activates factor XI to initiate blood clotting,
b) Initiate platelet aggregation.
c) Secretes ADP.
d) Both (a) & (b).
23.
The
extrinsic clotting pathway:
a) Starts by factor XII.
b) Clots blood in tissues.
c) Has more steps than the intrinsic pathway.
d) Is set of when Hageman factor comes into contact with collagen
in an injured vessel.
24.
Which
isn't a required factor in the intrinsic clotting mechanism:
a) Calcium ions.
b) Factor XII.
c) Platelet factor 3.
d) Factor XIII.
25.
Tissue
thromboplastin:
a) Is released from traumatized tissue and triggers the extrinsic clotting
pathway.
b) Converts fibrinogen to fibrin.
c) Forms the meshwork of the clot.
d) Activates factor XII.