Respiratory travels by the trachea, known to be

system provides us with oxygen and gets rid of carbon dioxide, a waste product
that can be dangerous in body’s cells if allowed to accumulate. three important
parts of respiratory system are the airways, lungs, and muscle.

of respiratory system can be divided functionally into the conducting zone and
the respiratory zone. Its conducting area is the airway from the nose downwards
to the bronchioles which is significant site liable for transferring air and several
foreign particles.  The breathing area
consists of bronchioles down to the alveoli, where the gas exchange takes places
via a dispersal process.  This system
begins at the place where oxygen enters the body through the nose (nasal
cavity), this format provides us with the sense of inhalation at the same time
as filtering, warming, and moisten breathe in. 

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that reaches through the nasal cavity travels to the pharynx which is the
cylindered  shaped pathway leading to the
larynx which has the voice box and is a hollow tube connected to the
windpipe,  After going through the
larynx, oxygen travels by the trachea,  known to be the windpipe. At this point, the
air is cleaned, then moistened before going into the lungs. The lungs are in
three lobes the right superior, middle and inferior lobe. The left lung is
diminutive and has only two lobes the left superior and inferior lobe both
associated externally with small tubular. The fresh oxygen then develops into
the depth tissues of the lungs; ultimately, progressing the region the centre
of the respiratory system where gas exchange.



begins by the contraction of the diaphragm that line at the lower part of the
thorax, fastening off air-tight from abdominal cavity.  Its density causes the muscles in the thorax
to draw the end of the anterior of each rib in and out to enlarge the volume.
In view of this, tension in the thorax and the lungs decrease outside the
atmospheric air pressure relatively.  Firstly, air enters the body through the nose,
moves quickly to the pharynx or throat. Then go through the larynx or voice box
that links the trachea which has muscular tube c shape that consists of rings
of cartilages which stops them from collapsing. The left and right bronchus
branches into the trachea that further divides into tiny branches called
bronchioles. Alveoli is the smallest number of bronchioles in a tiny air sac that
inflate throughout inhalation and deflate. During internal swallowing, back of
the tongue that is joined to the top of the larynx, pushes upward, forcing the
epiglottis to close over the glottis, preventing food or foreign objects from
entering the larynx. If any items enter the vocal folds, stimulation of the larynx
muscles causes a cough reflex to try and expel the elements to prevent choking.

distribution of oxygen in the lungs down to the bloodstream and replacement of
carbon dioxide of the bloodstream into the lungs are called gas exchange. Transpiring
in the lungs linking the alveoli and the system of tiny blood vessels known as
capillaries which are positioned the walls of the alveoli where red blood

pass through the capillaries hence making it possible for oxygen and carbon
dioxide to disperse freely between the respiratory system and the bloodstream.
Oxygen molecules attached to red blood cells hence moving backwards to the heart
at the equivalent moment, carbon dioxide molecules within the alveoli inflated
out of the body by means of the next exhalation.  Gas exchange also allows the body to restock
oxygen and eradicate the carbon dioxide both of which are very necessary for

Smoking damages the
respiratory system. Every time an individual smokes, the poisonous gases pass
through the lungs then into the bloodstream, hence flowing to the entire organ
in the body. Cigarette smoke contains the poisoned gases, carbon monoxide, and
nitrogen oxide. All classes of tobacco are hazardous, including cigar pipes,
and smokeless tobacco such as chewing tobacco and snuff. Nicotine is an
addictive chemical in tobacco. Smoking affects the two lungs airways, known as
bronchial tubes and the small air sacs called alveoli.  Tiny hair-like known as cilia causing harmful
substances to the lungs causing irritates to the bronchial tubes fabricate them
to increase and make mucus. Therefore, slowing the movement of the cilia as a
result of smoke making mucus to reside in the lungs whiles asleep, some cilia recuperate
and start pushing further pollutants and mucus out of the lungs.  And when waking up, the body attempts to eject
this material by coughing continually, a condition known as smoker’s cough. In
no time, chronic bronchitis builds up as the cilia stop working and the airways
become clogged by means of mucus. Breathing can become more difficult, causing
the lungs to become more vulnerable to further disease such as chronic
bronchitis and emphysema which is collectively called COPD which is the gradual
loss of the ability to breathe for which there is no antidote.