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The Respiratory System

The Respiratory System.  Its job is to deliver oxygen to all cells in the body and to get rid of CO 2. Movement of the chest when breathing is caused by the movement of the diaphragm . Diaphragm : is the muscle that allows human to inhale and exhale. The Respiratory System.

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The Respiratory System

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  1. The Respiratory System  Its job is to deliver oxygen to all cells in the body and to get rid of CO2. • Movement of the chest when breathing is caused by the movement of the diaphragm. • Diaphragm: is the muscle that allows human to inhale and exhale.

  2. The Respiratory System  Main parts of respiratory system: • Mouth and nose: allows the body to inhale oxygen. • Trachea. • Bronchi. • Lungs. • In the lungs, the tube end in tiny air sacs, which allow gases move through them.

  3. The Respiratory System • Oxygen from the air moves to the heart; which pumps blood with oxygen to all parts of the body. • CO2 is carried from the cells to the air sacs of the lung. It then leaves the body when you exhale.

  4. The Circulatory System • Blood moves from the heart and returns back to it through blood vessels. • Artery: is a blood vessel that carries blood away from the heart. • Vein: is a blood vessel that returns blood to the heart. • Capillary: is a blood vessel with very thin walls that allow oxygen and CO2 to pass through.

  5. Heart

  6. Blood • Blood is a liquid form of connective tissue. • Blood contains different types of cells that move in a liquid called plasma.

  7. Blood • Types of blood cells are: • 1. Red blood cells: They carry oxygen to all • of the body’s cells. • 2. White blood cells: protect the body from germs. • 3. Platelets: function to make clots and stop bleeding in case of a cut.

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