Why are the walls of the left ventricle thicker than that of the right ventricle?

• The left ventricle must force blood into all the capillaries of the lungs 
• the left ventricle doesn't skip leg day
• This is false, the walls of the right ventricle are thicker
• Blood from the left ventricle is pumped throught the entire body 

Receives oxygenated blood from the lungs

• Right Ventricle
• Left Ventricle
• Right Atrium
• Left Atrium

A flap of tissue that prevents blood from flowing backward

• Aorta
• Atrium
• Septum
• Valve

Carries the blood from the ventricle to the body

• Aorta
• Atrium
• Valve
• Septum

Pumps the oxygenated blood to all parts of the body

• Right Ventricle
• Left Ventricle
• Right Atrium
• Left Atrium

Receives blood from the body that is low in oxygen and high in carbon dioxide

• Right Atrium
• Right Ventricle
• Left Atrium
• Left Ventricle

Pumps deoxygenated blood to the lungs

• Right Ventricle
• Right Atrium
• Left Ventricle
• Left Atrium

The AV node is located at...

• A
• B
• C
• D

An EKG is actually

• A ratio
• An equation
• A time frame
• A graph 

An electrocardiogram measures what?

• The amount of pressure exerted on blood vessels.
• The electrical activity of the heart.
• How many times the heart contracts over time.
• The body's temperature caused by friction of blood in vessel.