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1. Thrombopoiesis is the production of platelets. Which of thefollowing hematopoietic cell types do platelets form from?

   	A.	Lymphocytes
   	B.	Megakaryocytes
   	C.	Neutrophils
   	D.	Monocytes
   	E.	Both B and D
   	F.	Both A and D

1 points   

QUESTION 2

1. Coagulation, also known as blood clotting, requires theactivation of a vast number of clotting enzymes. Which of thefollowing clotting enzymes is responsible for the cleavage offibrinogen (inactive) to fibrin (active)?

   	A.	Plasmin
   	B.	Factor XII
   	C.	Thromboplastin
   	D.	Thrombin
   	E.	None of the above

1 points   

QUESTION 3

1. Following a laceration, there are three major steps that occurthat cause the cessation of bleeding. Please put them in thecorrect order from when the first one starts to when the last onestarts.

         -       1.      2.       3.     

   Coagulation

   
         -       1.      2.       3.     

   Platelet Plug Formation

   
         -       1.      2.       3.     

   Vascular Spasm

1.5 points   

QUESTION 4

1. Von Willebrand factor is responsible for preventing theplatelets from sticking to the walls of undamaged bloodvessels.

   True

   False

0.5 points   

QUESTION 5

1. Which of the following layers of the heart is the mostsuperficial?

   	A.	Myocardium
   	B.	Fibrous Pericardium
   	C.	Endocardium
   	D.	Parietal Pericardium

1 points   

QUESTION 6

1. Which of the following valves does the blood flow through as itleaves the left ventricle?

   	A.	Bicuspid (Mitral Valve) AKA Right atrioventricular valve
   	B.	Tricuspid Valve AKA Left atrioventricular valve
   	C.	Aortic semilunar valve
   	D.	Pulmonary semilunar valve