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Cards In This Set
| Front | Back |
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The respiratory system is divided
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Structurally and Functionally
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Structural division-
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Lower and upper respiratory system
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Upper
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Nose pharynx and associated structures
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Lower
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Larynx, trachea, brochi and lungs
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Functional division of the respiratory sytem
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Conducting and Respiratory Zone
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Conducting Zone is made up of
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Nose pharynx. larynx trachea bronchi bronchioles
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The conducting zone are lined with the following
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Puesdo stratified columnar epithelium
serous glands
globet cells- secreting mucus
Cilia- hair like projections
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What part of the respiratory system does gas exchange actually takes place
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Alveoli
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What is pulmonary ventilation/ breathing
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Gas exchange from the external environment to the internal enviroment of the body
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Ventilation is controlled by
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Respiratory muscles
intrapleral pressures
elastic properties of the lungs
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External respiration
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This process involves the the whole process of inhalation and exhalation, moving of gases in and out of the body- across the respiratory membrane
respiratory membrane of the alveoli to blood strean to pulmonary veins to heart to sents to the body, cells pick up oxygen, carbon dioxide diffuse out of the tissue into blood stream to the lungs into alveoli and back to environment.
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Internal respiration
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Exchange of gases between capillaries and tissue cells
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The main functions of the parts of the conducting zone
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Nose
warms the air
filters - trapping foreign and harmful particles aided by ciliated cells of nasal mucosa and mucus turbinate bones make turbulence which also aids in removal of particles
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Mouth
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Passageway for air
provides less warm humidification and less protection also
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Sinus
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Air filles spaces
secretions drain to nasal cavity
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