1.1 Human respiratory system.ppt........

Respiratory system

1. Unit 1 Unit 1
Respiration
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2. Main Contents Main Contents
1.1 The human respiratory system
1.2 Gas exchange
1.3 Breathing
1.4 Respiration
1.5 Blood

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3. 1.1 The human respiratory system
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4. Objectives Objectives
At the end of this topic you will
oLearn the names of different parts of the human respiratory system
oObserve carefully, and record your observations, as the structure
of lungs is demonstrated
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5. Key words Key words
•Trachea or Windpipe
•Voice box

•Aerobic
•Air sac
•Bronchiole
•Bronchus
•Cartilage
•Larynx
•Respiration
•Respiratory system
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6. 1.1 The human respiratory system 1.1 The human respiratory system
What is respiration ?
•Respiration is one of the characteristics of all living
things. It is the process of breaking down of food to
release energy.
•The process of respiration happens inside all cells in
our body including cells in our lungs.
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7. 1.1 The human respiratory system 1.1 The human respiratory system
What is respiratory system?
•Respiratory system is the network of organs and tissues
that help us breath.
•This system involved with providing oxygen to the blood
and removing carbon dioxide so that respiration can
take place in cells.
•It includes our airways, lungs, blood vessels and
muscles that power our lungs.
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8. Why we need oxygen Why we need oxygen
•Aerobic respiration is the type of respiration which requires
oxygen to release energy inside the cell.
•During aerobic respiration glucose will be broken down in
to carbon dioxide and water as waste product.
Glucose + oxygen carbon dioxide + water + ATP
•The air around us contains oxygen. When we breathe, we
take air into our lungs. Some of the oxygen from the air
goes into our blood. The blood delivers the oxygen to every
cell in the body, so that the cells can use it for respiration.
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9. Why we need oxygen Why we need oxygen
•The blood collects the waste carbon dioxide from
the cells, and take it back to the lungs.
•The organs that help you take oxygen out of the air,
and get rid of carbon dioxide, make up the
respiratory system.
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10. The structure of the human The structure of the human
respiratory system respiratory system
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11. The structure of the human The structure of the human
respiratory systemrespiratory system
•Air gets into our body through our nose
or mouth. Both the nose and mouth
are connected to our trachea by
larynx.
•Trachea is a tube leading from the
back of the throat, through which air
travels into the lungs; it has C-shaped
rings of cartilage in it to support it. It is
sometimes called wind pipe.
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12. The structure of the The structure of the
human respiratory system human respiratory system
•Trachea branches into two bronchi (singular bronchus). Each
bronchus goes to each lung. Each bronchus divides into several
small tubes called bronchioles.
•The bronchioles end by branching into many tiny structures called
air sacs. This is where the oxygen goes into the blood, and the
carbon dioxide comes out.
•Larynx is the organ at the top of the trachea that contains the
vocal cords. It is also called voice box.
•Vocal cords are bands of muscle that stretch across inside the
larynx, which we vibrate to make sounds.
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13. The structure of the The structure of the
human respiratory system human respiratory system
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Air sacs/ alveoli