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22 Cards in this Set
- Front
- Back
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What is the function of the respiratory system?
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Air distributor and gas exchanger
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What is the route that air travels
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Nose, pharynx, larynx,trachea, bronchi, lungs
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What are Alveoli?
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Very thin-walled sacs at the ends of the "respiratory tree" that are the functional unit of the respiratory system. This is where diffusion takes place.
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What is the upper respiratory tract composed of?
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Nose, pharynx, and larynx
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What is the lower respiratory tract composed of?
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Trachea, bronchi, and lungs
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What is the difference between the respiratory mucosa and the respiratory membrane?
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The mucosa is a membrane that lines most of the air distribution tubes in the system. The membrane seperates the air in the alveoli from the blood in surronding capillaries.
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What are the three parts of the pharynx?
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The nasopharynx, the oropharynx, and the laryngopharynx
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What do most of us call the pharynx?
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The throat
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What tubes empty into the pharynx?
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Auditory or eustachian tubes open into the nasopharynx;they connect the middle ears to the nasopharynx
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What is another name for the larynx?
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The voice box-it is composed of several pieces of cartilage, the largest of witch is the "adam's apple"
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What are the two main parts of the larynx?
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The GLOTTIS is the space between the vocal chords. The EPIGLOTTIS partially covers the opening of the larynx. It serves as a trapdoor closing off the larynx during swallowing.
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What is the trachea?
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It is known as the windpipe-it furnishes part of the open passageway through which air can reach the lungs from the outside
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What is the substance that keeps the alveoli open and from collapsing?
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Surfactant
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What is the pleura?
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It covers the outer surface of the lungs and lines the inner surface of the rib cage.
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What is external respiration?
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The exchange of gases between air in the lungs and in the blood.
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What is internal respiration?
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The exchange of gases between the blood and the cells of the body.
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What is cellular respiration?
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It is the actual use of oxygen by cells in the process of metabolism.
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What is inspiration?
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Moving air into the lungs by means of your inspiratory muscles(diaphragm and external intercostal muscles)..controlled by the phrenic nerve
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What is expiration?
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Passive process that begins when the internal intercostals and abdominal muscles relax.
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What is tidal volume?
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It is the volume of a normal breath (avg. 500ml)
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What is the vital capacity?
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It is the largest amount of air you can breathe out in one expiration (4800ml)
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What is the residual volume?
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It is what is left in the lung after you empty your vital capacity (1200)
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