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the respiratory system consists of passages that
filter incoming air and transport it into the lungs and to the many microscopic air sacs where gases are exchanged.
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respiration is the process of
exchanging gases between the atmosphere and body cells
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respiration consists of
ventilation, external respiration, transport of gases, internal respiration, cellular respiration.
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gas exchange, oxygen, and carbon dioxide, occure at the
cellular and molecular levels.
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Aerobic reactions of cellular respiration allow for
ATP production, carbon dioxidegeneration forming carbonic acid 36 ATP
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Upper respiratory tract consists of
nose, nasal cavity, sinuses, pharynx
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lower respiratory tract
Larynx, trachea, bronchial tree, lungs.
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the nasal conchae
support the mucous membrane that lines the nasal cavity and help increase it surface area.
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sinuses air filled spaces in the
frontal, sphenoid, ethmoid , and maxillary bones of the skull.
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the pharynx is
posterior to the oral cavity and between the nasal cavity and the larynx.
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three parts of the pharynx are
nasopharynx, oropharynx, laryngopharynx
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the larynx if an enlargement in the airway
superior to the trachea and inferior to the pharynx. it is composed of a framework of muscles and cartilages bound by elastic tissue. It also houses the vocal cords.
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the Trachea windpipe is a flexible cylindrical tube
it extends downward anterior to the esophagus and into the thoracic cavity it splits into right and left primary bronchi.
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Carina is the split between
the right and left main bronchi
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Alveoli
provides surface area for gas exchange.
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Right lung has
three lobes
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