Cardiovascular Intro E.C.

Major artery at the top of the heart sends oxygenated blood from the left ventricle to the rest of the body.

• aorta
• pulmonary artery
• inferior vena cava

About how large is the human heart?

• the size of an onion
• the size of a fist
• 4.5 pounds

Your heart is an involuntary muscle that is always working.

• True

• False

The heart is made of which of the following types of muscles?

• Cardiac muscle

• Striated muscle

• Smooth muscle

• None of the above

Pumps oxygen-poor blood to the lungs

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

A flap of tissue that prevents blood from flowing backward

• Aorta
• Atrium
• Septum
• Valve

Which chamber of the heart has the thickest wall?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

Which structure of the heart receives blood from the body that is low in oxygen and high in carbon dioxide?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

What does letter D represent?

• aorta
• left atrium
• left ventricle
• right atrium

The heart layer that keeps blood from sticking to the inside of the heart made up of squamous epithelial cells

• endocardium

• pericardium

• myocardium

• epicardium