Blood that flows between the heart and lungs is known as the _____.

• pulmonary circuit

• systemic circuit

What chamber is the big arrow pointing to?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What chamber is the arrow pointing to?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What is the thick muscular layer of the heart called?

• pericardium

• endocardium

• myocardium

• epicardium

The valve in the left side of the heart is known as the _____.

• bicuspid

• pulmonary semilunar

• tricuspid

• aortic semilunar

Where does the blood go after it leaves the right ventricle?

• pulmonary artery

• pulmonary vein

• aorta

• vena cava

Where does the left ventricle push blood to?

• aorta and body

• pulmonary arteries and lungs

• pulmonary arteries and body

• aorta and lungs

Where is the highest pressure within the types of blood vessels?

• arteries

• veins

• capillaries

• arterioles

What is the aorta?

• largest vein leading back to the heart

• largest artery leading away from the heart

• a chamber of the heart

• artery leading from the heart to the lungs

Which of the following are the blood vessels that have the thickest walls?

• veins

• arteries

• capillaries

• arterioles