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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
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respiratory system function
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oxygen to bloodstream, removes CO2 from blood
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pulmonary ventilation
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air between external environment and lung's air sac
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air betw. environment and air sacs
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internal respiration
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gas exchange between blood and body cells
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external respiration
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gas exchange betw.
air sacs and tiny capillaries |
air sacs and capillaries
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organs of respiratory system
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nose, larynx, trachea, bronchi, bronchioles, aveolar duct, aveoli
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alveoli
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thin epithelial wall with interspersed cells (type 11) that produces surfactant.
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surfactant
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fluid keeps alveolar surface moist and inflates the alveoli
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respiratory membrane
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alveolar wall, basement membrane of connective tissue and endothelial wall of capillaries
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right lung
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3 lobes
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left lung
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2 lobes
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lungs
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each lobe is supplied by bronchial tree. Enclosed by connective tissue.
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segments of lungs
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each lobe is divided into smaller compartment called segments; supplied by smaller branch of bronchiole tree and enclosed by connective tissue.
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segment supplied by bronchiole tree. Enclosed by connective tissues
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segment compartment of lobes
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a single alveoli,arteriole,
bronchiole, capillaries, lymphatic vessel, venule |
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inspiration
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diaphram, external intercostal muscles contract, thoracic cavity expands, pleural cavity decrease, lung volume increase, alveolar pressure falls, air rushes into alveoli
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contract, increase, into
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expiration
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diaphram and external intercostal muscles relax, thoracic cavity decreases, pleural cavity pressure increases, alveolar pressure is greater, air flows out alveoli
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relax, decrease, pressure greater, out
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tidal volume
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air in or out of lungs during quiet breathing (500ml)
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quiet breathing
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vital capacity
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air exhaled after deep breath (AV 4k- 6k ml)
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deep breathing exhaled
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respiratory center
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in pons and medulla oblongata
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factors that affect breathing
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chemicals, stretch receptors, mental states
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