1.	Contraction of ventricles is known as diastole.
	True   False
2.	Due to presence of ______ , back flow of blood is prevented in veins.
	Septa   Thick walls   Valves   All of these
3.	O pulso médio em um ser humano adulto saudável é de ______ batimentos / minuto. (em descanso)
	86-90   62-66   90-94   72-78
4.	Bleeding time is prolonged in hemophilia.
	True   False
5.	Which of these is not a feature of veins?
	All veins carry deoxygenated blood.   They are thin-walled.   They contain valves.   They return blood from the various parts of the body to the heart.
Hint Dica