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2. The Human Breathing Organs is lungs
They are large pink organs located in the chest
of a human and they consist of soft tissue

3. ‘Breathing process also known as respiration.
All living things breathe all the time to stay
alive.

4. Respiration in humans is a process which helps them to take in Oxygen and
expelling carbon dioxide. Oxygen is necessary for converting food into energy. It
also helps in breathing out carbon-dioxide which is produced as a result of
various chemical reactions inside the human body. Respiration is also known as
breathing in simple terms. The primary organs of respiratory system are nose,
lungs, trachea (wind pipe) and diaphragm. All these organs function together for
smooth inflow and outflow of the air

5. When we breathe, we taking in oxygen and
giving out carbon dioxide and water vapour
‘Oxygen is required for breaking up food to
produce energy. The energy needed for all the
activities of the body such as growth, excretion
and building of new cells
To proof that water vapour is formed when we
breathe, breathe out onto the surface of a cold
mirror, water vapour will be formed on the
mirror

6. The tract of human breathing system’
Fine hairs in our nose act as a filter to remove
dust and any fine particles from the air

7. The Breathing Process
Involving inhalation and exhalation
put your hand on your chest, and you can feel the movement
During inhalation, the chest moving upward, ribs
opening, lungs expanding, diaphragm contracting,
and air flows in to the body through the nose or
mouth. Inhaled air has more oxygen than exhaled air.
During exhalation, the chest moving downward, ribs
closing, lungs contracting, diaphragm relaxing, and
air flows out from the lungs, then to the surrounding
through the mouth or nose. Exhaled air has more
carbon dioxide than inhaled air.

8. The rate of breathing is the number of chest
movements in a period of time.
Different people have different rates of
breathing. This depends on their gender or
energy requirement such as a person needs
more energy if the body is active, so that their
rates of breathing increasing.
Rate of Breathing