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The heart
 

The heart

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A quick introduction to the human heart

A quick introduction to the human heart

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    The heart The heart Presentation Transcript

    • THE HEART
    • THERE IS ONE immediate need for THE HEART
      • THE HEART IS ESSENTIAL FOR PUMPING BLOOD THROUGHOUT THE BODY--WITHOUT IT WE WOULD NOT GET THE OXYGEN OUR CELLS NEED TO SURVIVE
    • LOCATION OF THE HEART
      Left of the midline posterior to sternum in the mediastinum
    • The heart consists of four chambers
      • Right atrium
      • Right ventricle
      • Left atrium
      • Left ventricle
    • Looks like a lot to learn.
    • Right atrium
      The right atrium receives blood from the Superior and Inferior Vena Cava, this is deoxygenated blood
      The blood flows from there into the right ventriclethrough the tricuspid valve. Valves are important--they keep blood from flowing back into the heart
    • Right Ventricle
      • Blood in the right ventricle is still deoxygenated
      • Blood from the right ventricle is pushed out of the heart into the pulmonary artery where it is transported to the lungs
      • There is a valve between the pulmonary artery and the right ventricle-pulmonary semilunar valve
      • In the lungs oxygen is received into the blood
    • Follow the arrows to see how blood flows through the heart.
    • Left Atrium
      • After the blood has oxygen, it is returned to the heart through the pulmonary veins into the left atrium.
      • In left atrium blood is pushed into the left ventricle through the bicuspid valve.
    • A closer look at the valves
    • Right Ventricle
      • The left ventricle receives oxygenated blood from the left atrium
      • From here blood is pushed out to the body through the aorta.
    • Cardiac muscle tissue
    • LAYERS OF THE HEART
      Epicardium: outermost layer of the heart
      Myocardium: is the heart muscle
      Endocardium: innermost layer made up of simple squamous epithelium
    • What structures can you identify?
    • Blood flow through the heart
    • Autonomic innervation of the heart
    • The end(hope your heart is still pumping)