circulartory system

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

Identify

• Left atrium
• Right atrium
• Left ventricle
• Right ventricle

What is the largest artery in the human body called?

• Superior Vena Cava
• Aorta
• Inferior Vena Cava
• Pulmonary Artery

The upper chambers of the heart are known as...

• valves
• ventricles
• atria
• septum

To pump and circulate blood is the work of which organ?

• lungs
• liver
• pancreas
• heart

How many valves are in the heart?

• 3
• 4
• 5
• 6

Blood high in carbon dioxide enters the heart through the superior vena cava into which atria?

• left
• right

Pulmonary referrs to the lungs, blood leaving the heart through the pulmonary artery is high in which gas?

• nitrogen
• carbon dioxide
• oxygen
• helium

The ___________ is the thick muscular wall that seperates the two sides of the heart.

• atria
• ventricles
• valve
• septum

Blood leaving the heart to go to the body leaves from which ventricle?

• left
• right