Circulatory System

Humans have a __________ circulatory system, meaning that blood is pumped through a series of veins and arteries.

• Open

• Closed

• Feedback

• Circular

The organ which is responsible for "pumping" blood to all of the regions of the body is known as what?

• Veins

• Arteries

• Heart

• Aorta

The protective sac in which the heart is found is known as what?

• Epicardium

• Duodenum

• Endocardium

• Pericardium

The human heart is found in the _____________ cavity in the human body.

• Pelvic

• Dorsal

• Cranial

• Thoracic

The muscular tissue of your heart, known as _____________, is what contracts to pump blood through the circulatory system.

• Epicardium

• Myocardium

• Endothelium

• Endocardium

The human heart is a _____________________ muscle, meaning that it operates without conscious thought.

• Voluntary

• Involuntary

• Temporary

• Per-Diem

The right and left sides of the heart are separated by the _______________, which prevents the oxygen rich and oxygen poor blood from mixing.

• Inner Wall

• Bouncer

• Septum

• Pericardium

The upper chambers of the heart receives the incoming blood, and are known as what?

• Atrium / Atria

• Ventricle / Ventricles

• Aorta

• Pulmonary Valve

The lower chambers of the heart which pump blood out of the heart, are known as what?

• Pericardium

• Atrium / Atria

• Ventricle / Ventricles

• Endocardium

Deoxygenated blood passes from the ___________ into the right ventricle, and goes to the lungs.

• Left Atrium

• Right Atrium

• Left Ventricle

• Aorta