Circulatory System

Type of circulation that refers to blood flow from the heart to the lungs and back to the heart again?

• Systemic circulation

• Renal circulation

• Portal circulation

• Pulmonary circulation

Type of circulation that refers to the blood flowing through the entire body?

• Systemic circulation

• Renal circulation

• Portal circulation

• Pulmonary circulation

Which choice below correctly identifies the layers of the heart from the most outer layer to the most inner layer?

• epicardium, myocardium, endocardium

• endocardium, myocardium, epicardium

• myocardium, endocardium, epicardium

• myocardium, epicardium, endocardium

The sac that surrounds and protects the heart?

• endocardium

• epicardium

• myocardium

• pericardium

What type blood vessel exchanges nutrients and oxygen in the tissues?

• Arteries

• Veins

• Capillaries

• Venules

How many chambers does the heart have?

• 1
• 2
• 3
• 4

Contraction of the heart is done by the 

• epipericardium
• visceral pericardium
• pericardium
• myocardium

The purpose of heart valves is to 

• set the pace at which the heart beats
• prevent blood from flowing backward
• oxygenate the blood as it passes through the valve
• add minerals to the blood

tissue separating the oxygenated and deoxygenated blood

• apex

• atria

• ventricle

• septum

heart strings that help open/close the AV valves

• myocardium

• tricuspid

• mitral

• chordae tendineae