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64 Cards in this Set
- Front
- Back
four processes carried out by respiratory system |
1 pulmonary ventilation: moving air into and out of lungs 2 external respiration: exchange of gases at the alveoli of the lungs 3 transport of respiratory gases to the tissue 4internal respiration: exchange of gases between blood and tissue |
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structures of upper respiratory tracts |
nose, paranasal sinuses and pharynx |
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what separates upper and lower respiratory tracts |
larynx |
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lower respiratory tract structures |
trachea, bronchi and lungs |
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after air goes through nose, |
scroll-like bones make up nasal conchae whic are lined by mucous membrane. Air is moisturized, filtered. |
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increased surface area and mixing of air enhances what? |
olfaction |
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what serve as chambers that resonate sound as we speak |
sinuses
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is a passageway for air, liquids and solids |
pharynx |
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devision of pharynx |
masopharynx, oropharynx, laryngopharynx |
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masopharynx funtion |
eustachian tubes (auditory), houses the pharyngeal tonsils |
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oropharynx function |
houses the palatine tonsils and lingual tonsils |
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laryngopharynx function |
respiratory and digestive function |
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voice box |
lanrynx |
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what connects the laryngopharynx with the trachea |
larynx |
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floating, u shpaed bone in anterior of neck |
hyoid bone |
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sorting paddle that detects and responds to material entering the oropharynx |
epiglottis |
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food or water goes to |
esophagus |
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if gas is breathed in, |
it goes from epiglottis into larynx and thrachea |
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initial segment of respiratory system |
trachea |
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glottis |
opeing of the larynx, vocal chords, opeing between chords |
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men have lower voices becuase |
effects of androgens during puberty thickening and elongating vocal cords |
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nine pieces of cartilage that make up larynx |
thyroid, epiglottis, cricoid paired: arytenoid, corniculate and cuneiform |
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leaf shaped piece of hyaline cartilage that closes over the larynx when food or liquids are swalloed |
epiglottis |
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influences changes in position and tension of the vocal folds |
arytenoid |
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corniculate and cuneiform |
support the vocal folds |
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posterior surface of the trachea is shared with the |
esophagus |
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the trachea divides into |
the right and left primary bronchi |
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the trachea divides into primary bronchi at the |
carina |
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how many secondary bronchus per lung |
left lung: 2 right lung: 3 one for each lobe |
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bronchi enter at the |
hilum along with blood vessels |
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secondary bronchi furthur branch to form |
bronchioles |
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bronchioles divide into |
several alveolar ducts |
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alveolar ducts end in |
alveoli |
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alveoli provide what |
a large surface area for the exchange of gases |
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serous membrane consists of |
areolar connective tissue covered by simple squamous epithelium |
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if membrane becomes inflamed a condition called |
pleurisy occurs |
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pleurisy causes |
friction between layers of membrane |
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exess fluid may accumulated in the pleural caivity due to inflammation, difficult to breath |
pleural effusion |
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muscle that forms the floor of the thoracic caivity, powers breathing |
diaphragm |
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contraction of diaphragm cauese |
enlarges the thoracic cavity enhabling inhalation |
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diaphragm responsible for |
75% of air that enteres the lungs during quiet breathing |
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phrenic nerve originates from spinal cord at levels |
c3-c5 |
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"c3, 4 and 5 |
keep the diaphragm alive" |
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phrenic nerve distributes over the superior surface of |
diaphragm |
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when what is stimulated, contraction of the diaphragm |
phrenic nerve |
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sympathetic causes |
dilation of bronchial smooth muscle |
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cells and nerves of sympathetic nervous system |
-preganglionic cell bodies in intermediate horn of t1-t4 spinal cord -postganglionic cell bodies in sympathetic chain ganglia -nerves from pumonary plexus in hilum and lung |
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parasympathetic inervation via |
vagus nerve |
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acetylcholine is the neurotransmitter released during |
parasympathetic response |
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structures of conductiong zone |
nose, pharynx, larynx, trachea, bronchi, bronchiles, and terminal bronchioles |
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structures of respiratory zone |
respiratory bronchiles, alveolar ducts, alveolar sacs, and alveoli |
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after air enters nose or mouth air must |
travel down pharynx, through larynx, and down trachea |
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air travels through trachea and make right or left turn at |
primary bronchus |
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bronchiles end in the basic unit of the lung |
lobule |
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each lobule contains a |
lymphatic vessel, arteriole, venule, and a branch from a terminal bronchile |
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terminal broncioles subdivide into tiny |
respiratory bronchioles |
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epithelium of trachea and bronchi is |
pseudostratified columnar epithelium |
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mucus and cilia form |
mucociliary escalator which brings dust and other particles out of the lungs and into the pharynx to be swallowed |
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bronchi and bronchioles are ringed by |
smooth muscle
r |
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smooth muscle that ring bronchi do what |
regulates the diameter of the conductiong airways |
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type 1 alveolar cells form a thin |
alveolar-capillary membrane in collaboration with capillary endothelial cells |
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type ii alveolar cells |
secrete surfactant |
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what englulf large particles and inaders then ride the mucociliary escalator out of the lungs |
alveolar macrophages |
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thin membrane that allows for easy diffusion of gasses |
alveolar capillary membrane |