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What does the respitory system bring into the body?
needed oxygen
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what does the respitory system eliminate from the body?
C02
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what transports the gases
blood
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what is oxygen transported to?
the tissues
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where is carbon dioxide transported to?
lungs
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the space within and postierior to external nose
nasal cavity
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muscular tube extending from the nasal cavity to the esophagus
pharynx
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external openings leading to nasal openings
external nares
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the repitory tube that extends from the larynx to the main primary branch
trachea
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part of the respitory passageway located between the trachea and the pharynx. It keeps airway open and prevents food from entering airway
larynx
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one of two large respitory tubes that branches from the trachea and enters a lung
right primary bronchus
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one of two large respitory tubes that branches from the trachea and enters a lung (left)
left primary bronchus
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one of the paired respitory system organs in which gas exchange occurs (right)
right lung
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one of the paired respitory system organs in which gas exchange occurs (left)
left lung
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the muscle that seperates the thoracic cavity from the abdominopelivic cavity. It contracts during respiration.
Diaphragm
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the serous membrane which covers the external surface of each lung
viseral pleura
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the serous membrane which liunes the thoracic wall and the mediastinum and covers the superior surface of the diapragm on each side of the thoracic cavity
parietal pleura
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the region of the thoracic cavity between the lungs
mediastinum
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the slit-like space between the viseral and parietal pluerae
plueral cavity
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serous lubricating fluid within the plueral cavity. Secreted by the pluerae
plueral fluid
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what are the branching airways of the lungs called?
Bronchial Tree
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one of the two large respitory tubes tubes (right and left) that branches from the trachea and enters a lung
primary bronchus
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a respitory tube that branches from a main bronchus and leads iunto one lung lobe
secondary bronchus
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respitory tube that branches from a secondary bronchus and leads to one bronchopulminary segment of the lung
terchiary bronchus
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a very small air passage without supporting cartilage
bronchiole
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the smallest, final type of bronchiole in the conducting zone
terminal bronchiole
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the lung region containing avioli, where gas exchange takes place
respitory zone
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thin walled air filled sacs in which gas exchange takes place
alveoli
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clusters of alveoli that open into a common space
alveolar sac
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what vessels carry blood that is low in oxygen from the heart to the lungs
pulmonary arteries
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what blood vessels completely surround each alveolus
capillaries
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what gases are exchanged between the air in the alveoli and the blood in the pulmonary capillaries
oygen and carbon dioxide
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what vessels carry oxigenated blood back to the heart?
pulmonary veins
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what is the strong attraction between water molecules at the surface of aveolar fluid called
surface tension
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what does surfactant do to the surface tension of alveolar fluid
lowers it
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what would an alveolus do if it were lined with pure watrer
alveoli would have to be completely reinflated with every breath
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what makes up respiratory membrane
- simple squamous epithelium
- endothelium of pulmonary capillary walls and thier basement membranes
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what does oxygen and carbondioxide do accrossthe respitory membrane?
diffuse
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