Circulatory System Quiz

Your heart is about the size of your (a)  

• fist
• foot
• head
• lungs

The chambers in the heart that collect blood are...

• atria

• arteries

• valves

• ventricles

___________ ensure blood only travels in one direction.

• Valves

• Arteries

• Atria

• Ventricles

What is the name of the protective membrane that surrounds the heart?

• Epicardium

• Myocardium

• Endocardium

• Pericardium

About how much blood is in your body?

• 5 liters

• 5 gallons

• 5 pints

• 5 quarts

The "lub dub" sound is the sound of...

Which valve is located between the right atrium and the right ventricle?

• Pulmonary valve

• Aortic valve

• Bicuspid valve

• Tricuspid valve

The inability for the heart to pump enough oxygen to meet the needs of the body is called...

• a stroke

• heart failure

• a heart attack

• an arythmia

Thrombocytes are...

• White blood cells

• Red blood cells

• Platelets

• Plasma

The innermost layer of the heart is the...

• pericardium

• myocardium

• epicardium

• endocardium