The heart has four chambers:

• Superior Chambers:

  • Left atrium

  • Right atrium

• Inferior Chambers:

  • Left ventricle

  • Right ventricle

Chambers

Two main categories of blood vessels:

• Arteries

  • transport blood away from the heart

• Veins

  • transport blood back to the heart

blood Vessels

Major Arteries

• aorta

• pulmonary arteries

• coronary arteries

• carotid arteries

Major Veins

• superior vena cava

• inferior vena ceva

• pulmonary veins

• cardiac veins

Blood Vessels

Pulmonary circuit

• Circulates blood between heart and lungs.

Systemic circuit

• Circulates blood between the heart and body.

Circulation

Blood needs oxygen..

• blood leaves the right ventricle

• pulmonary arteries take blood to the lungs to get oxygen

Blood now has oxygen..

• blood returns to the heart through the pulmonary veins

• blood is received by the left atrium

pulmonary Circulation

Oxygen rich blood sent to the body

• blood pumped from left ventricle

• aorta and arteries send blood to all body tissues requiring blood supply

Oxygen has been used up

• blood returns to the heart through the vena cavae

• blood is received by the right atrium

SYSTEMIC Circulation