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1. 
Which substance gives red blood cells their colour?
A.
Oxygen
B.
Carbon dioxide
C.
Hemoglobin
D.
Plasma
2. 
Which of the following is the muscular part of the heart?
A.
The pericardium
B.
The myocardium
C.
The endocardium
D.
The ventricles
3. 
Which of the following is the working phase of the heart?
A.
Pulse
B.
Heart rate
C.
Systole
D.
Diastole
4. 
The right ventricle pumps blood to the
A.
Right atrium
B.
Left veins
C.
Pulmonary artery
D.
Aorta
5. 
The aorta receives blood from the
A.
right ventricle
B.
pulmonary veins
C.
pulmonary artery
D.
left ventricle
6. 
Which carry blood away from the heart:
A.
Veins
B.
Capillaries
C.
Venules
D.
Arteries
7. 
Which of the following structure “sees” oxygenated blood?
A.
aorta
B.
Right Ventricle
C.
Right Atrium
D.
Pulmonary Artery
8. 
The structure of the Circulatory System consists of
A.
Blood Vessels, Blood, Lymphatic System, Brain
B.
Pulmonary Vessels, Blood, Lymphatic System
C.
Heart, Blood Vessels, Blood, Lymphatic System
D.
Blood, Heart, Blood Vessels
9. 
The heart is divided into four chambers. What divides the heart cavity ?
A.
capillary
B.
pericardium
C.
septum
D.
ventricle
10. 
Red blood cells are known as
A.
leukocytes
B.
platelets
C.
erythrocytes
D.
thrombocytes