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There are 3 major parts of the respiratory system: the airway, the lungs, and the muscles of
respiration. The airway, which includes the nose, mouth, pharynx, larynx, trachea, bronchi, and
bronchioles, carries air between the lungs and the body's exterior.
The respiratory system is what allows us to breathe and exchange carbon dioxide for oxygen.
The human respiratory system is a series of organs responsible for taking in oxygen and
expelling carbon dioxide. The primary organs of the respiratory system are the lungs, which
carry out this exchange of gases as we breathe.
During inspiration, the diaphragm and external intercostal muscles contract, causing the rib cage
to expand and move outward, and expanding the thoracic cavity and lung volume. This creates a
lower pressure within the lung than that of the atmosphere, causing air to be drawn into the
lungs.
Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination
of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli
and a network of tiny blood vessels called capillaries, which are located in the walls of the
alveoli.
Inhaled oxygen enters the lungs and reaches the alveoli. ... Oxygen passes quickly through this
air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood
into the alveoli and is then exhaled.
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7) During exercise there is an increase in physical activity and muscle cells respire more than they
do when the body is at rest. The heart rate increases during exercise. The rate and depth of
breathing increases - this makes sure that more oxygen is absorbed into the blood, and more
carbon dioxide is removed from it.
8) Development of the respiratory system begins early in the fetus. It is a complex process that
includes many structures, most of which arise from the endoderm. ... Until birth, however, the
mother provides all of the oxygen to the fetus as well as removes all of the fetal carbon dioxide
via the placenta.
9) Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop
them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries,
and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
10) Well, the primary difference is the location of the infection. Infections can be caused by a
number of things, including bacteria, disease, and viruses. Frequently, pharmacists and doctors
are able to better understand the nature of the conditions. -An upper respiratory tract infection
would include infection of the nose, nasal cavity, nasal and paranasal sinuses, and the larynx and
pharynx. A lower respiratory tract infection would include infection of the trachea, bronchi or
bronchial tree, and the lungs or pleural cavity.
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12) The main function of the lungs is the process of gas exchange called respiration In respiration,
oxygen from incoming air enters the blood, and carbon dioxide, a waste gas from the
metabolism, leaves the blood. A reduced lung function means that the ability of lungs to
exchange gases is reduced.
13) The major function of the lungs is to perform gas exchange, which requires blood from the
pulmonary circulation. This blood supply contains deoxygenated blood and travels to the lungs
where erythrocytes, also known as red blood cells, pick up oxygen to be transported to tissues
throughout the body