Blood Vessels and Heart Structure/Function

What carries the oxygenated blood from the lungs to the left atrium of the heart?

• vena cava 
• aorta
• pulmonary vein
• pulmonary artery

As the right ventricle contracts, the blood flows into the 

• Heart
• Pulmonary arteries 
• Atrium
• Ventricle 

The valves between the atria and ventricles are known as the ________ valves.

• atrioventricular
• aortic
• semilunar
• pulmonary

Blood leaves the right ventricle through the ___________.

• pulmonary artery

• aorta

• superior vena cava

• right atrium

Pulmonary circulation involves blood flow to and from the heart and the _______.

• body
• digestive organs
• brain
• lungs

Which has valves, arteries or veins?

• Arteries
• Veins

Blood enters the right atrium through 

• pulmonary veins
• inferior and superior vena cavas
• pulmonary arteries
• aorta

Oxygen-poor blood flows into what atrium? 

• left
• bottom
• right
• top

What are the functions of the semilunar and AV valves?

• prevent blood from leaking back into he ventricles

• prevent blood from leaking back into the atria

• allow blood to flow into the atria

• allow blood to leave the ventricles

What is the funtion of the capillaries?

• Endures high blood pressure
• Get rid of waste
• Collect blood
• Transfer oxygen and nutrients