Cardiovascular system

How big is the human heart?

• The size of the palm of your hand.

• The size of your outstretched hand.

• The size of your closed fist.

• The same size as a horses heart.

What are the upper chambers of the heart called?

• The atria

• The ventricles

• The vena cava

• The bi and tri cuspid cambers

Where does the electrical current in the heart start?

• The ventricle

• The apex

• The sinoatrial node

• The coronary artery

Name the only artery that carries deoxygenated blood.

• Pulmonary artery

• Aorta

• The Vena cava

• Pulmonary veins

The right side of the heart receives:

• oxygenated blood from the circulation

• deoxygenated blood from the lungs

• oxygenated blood from the left side of the heart

• deoxygenated blood from the circulation

The muscle layer of the heart is called the:

• myocardium

• pericardium

• epicardium

• endocardium

How many chambers does the heart have?

• one

• three

• four

• five

The largest artery is the:

• aorta

• pulmonary artery

• inferior vena cava

• carotid artery

Platelets are also known as:

• thrombocytes

• hepatocytes

• leucocytes

• erythrocytes

Which blood vessels provide nutrients and oxygen to the myocardium?

• Vena cava

• Carotid artery

• Pulmonary veins

• Coronary arteries