Structure and function of the heart

• The cardiovascular system consists of the?

  Heart (cardiac muscle)

  Blood vessels (arteries, capillaries, veins)

  Blood (blood cells and plasma)
• Structure and founction of the heart?

  -Heart is protected by the ribs and is located behind the sternum.

  -Adult heart is size of large fist

  -Heart beats about 100,000 times per day
• The septum divides the heart into two halves / pumps
• Two upper chambers of the heart?

  Left atrium

  Right atrium
• Two bottom chambers of the heart?

  Left ventrical

  Right ventrical
• Left atrium/pump and left ventrical contain?

  Oxygenated blood
• Right atrium/pump and Right ventrical contain?

  Deoxygenated blood
• The blood in the two pumps do not mix
• Arteries take blood away from the heart
• veins bring blood back to the heart
• The largest artery in the body is called the aorta
• Pulmonary arteries and veins are connected to the heart
• One way valves are located between?


  The atria and ventricles
• The bicuspid valave allows?

  Blood flow from left atrium to the left ventricle
• The tricuspid valve allows?


  Blood flow from the right atrium to the right ventricle.
• The Cardiac Cycle - right pump?

  •Deoxygenated blood from the body via the vena cavae to right atrium

  •Through tricuspid valve to right ventricle

  •Right ventricle contracts

  •Blood then enters the pulmonary artery (through the pulmonary valve) and moves to the lungs
• The Cardiac Cycle - left pump?

  •Oxygenated blood from the lungs to left atrium

  •Through bicuspid valve to left ventricle

  •Left ventricle contracts

  •Blood then enters the aorta and moves to the body

  •(The aorta is the largest artery in the body)