THE HEART             Kimberly Cai CN-3       Stephanie Syjueco CN-22
WHAT IS THE HEART?The  heart is the organ that supplies blood and oxygen to all parts of the body.The heart is pear shap...
Theheart is aninvoluntary muscle,meaning that unlike theleg or arm muscles, thecardiac muscle is notunder voluntary contr...
WHERE IS THE HEART LOCATED?The    heart is located beneath the protective ribs on the left side.It is located in the che...
THE HEARTThe  heart is divided into four chambers, called the right and left atria and the right and left ventricles
DIFFERENT ANIMALS MAY HAVE DIFFERENTCHAMBERED HEARTS OR NONE AT ALL.FOLLOWING IS THE GENERAL ANATOMY OFTHE HUMAN HEART.
PARTS OF THE HEART
MAIN FUNCTIONS OF THE HEART   The role of the heart is to pump oxygen-rich    blood to every living cell in the body. In ...
   The heart beats almost like a clock, about 60 to    80 times per minute, CONTINUOUSLY, whether    you are asleep or aw...
THE HEARTBEATThe  heartbeat is made up of systole and diastole, which are the two stages of a heartbeat.
SYSTOLE Stage when the ventricles of heart are  contracting resulting in blood being pumped  out to the lungs and the res...
DIASTOLE Stage when the ventricles of the heart are  relaxed and not contracting. During this stage,  the atria are fille...
THANKS FOR LISTENING! 
15. the heart
15. the heart
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15. the heart

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15. the heart

  1. 1. THE HEART Kimberly Cai CN-3 Stephanie Syjueco CN-22
  2. 2. WHAT IS THE HEART?The heart is the organ that supplies blood and oxygen to all parts of the body.The heart is pear shaped and about the size of a fist.
  3. 3. Theheart is aninvoluntary muscle,meaning that unlike theleg or arm muscles, thecardiac muscle is notunder voluntary control.
  4. 4. WHERE IS THE HEART LOCATED?The heart is located beneath the protective ribs on the left side.It is located in the chest cavityIt is surrounded by a covering called the pericardium.
  5. 5. THE HEARTThe heart is divided into four chambers, called the right and left atria and the right and left ventricles
  6. 6. DIFFERENT ANIMALS MAY HAVE DIFFERENTCHAMBERED HEARTS OR NONE AT ALL.FOLLOWING IS THE GENERAL ANATOMY OFTHE HUMAN HEART.
  7. 7. PARTS OF THE HEART
  8. 8. MAIN FUNCTIONS OF THE HEART The role of the heart is to pump oxygen-rich blood to every living cell in the body. In order to achieve its goal, it must continuously beat for a person’s entire lifespan. Because of its vital role, a non-beating heart always results in death
  9. 9.  The heart beats almost like a clock, about 60 to 80 times per minute, CONTINUOUSLY, whether you are asleep or awake. The heartbeat is regulated by a small "battery" located in the right atrium called the SINUS NODE. Electric currents travel in the heart by means of minute fibers in the wall of the heart, much like concealed wiring inside a room.
  10. 10. THE HEARTBEATThe heartbeat is made up of systole and diastole, which are the two stages of a heartbeat.
  11. 11. SYSTOLE Stage when the ventricles of heart are contracting resulting in blood being pumped out to the lungs and the rest of the body. Thick, muscular walls of both ventricles contract. Pressure rises in both ventricles, causing the bicuspid and tricuspid valves to close. Therefore, blood is forced up the aorta and the pulmonary artery. The atria relax during this time. The left atrium receives blood from the pulmonary vein, and the right atrium from the vena cava.
  12. 12. DIASTOLE Stage when the ventricles of the heart are relaxed and not contracting. During this stage, the atria are filled with blood and pump blood into the ventricles. Thick, muscular walls of both ventricles relax. Pressure in both ventricles falls low enough for bicuspid valves to open. The atria contract, and blood is forced into the ventricles, expanding them. The blood pressure in the aorta is decreased, therefore the semi-lunar valves close.
  13. 13. THANKS FOR LISTENING! 

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