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Chapter 21 part 1

The Resipiratory System Part I

QuestionAnswer
What are the functions of the Respiratory System? 1. Supplies body with oxygen 2. Disposes of carbon dioxide
What does the process of respiration involve? 1. Pulmonary ventilation 2. External respiration 3. Transport of respiratory gases 4. Internal respiration
What are the Respiratory organs? 1. Nose, nasal cavity, and paranasal sinuses 2. Pharynx, larynx, and trachea 3. Bronchi and smaller branches 4. Lungs and alveoli
What is the conducting zone? 1. Respiratory passageways that carry air to the sites of gas exchange
What does the conductiing zone do? Filter, humidify and warm incoming air
What is the Respiratory zone? site of gas exchange in the lungs; it is the terminal respiratory passages that contain alveoli
What is skeletal framework for the external nose? frontal bone, nasal bones, and maxilla
The shape and size variation of the nose are attributed to what? differences in flexible plates of hyaline nasal cartilages
The skin of the nose is _____ and contains what? thin; many sebaceous glands
Th nose cavity is divide internally into left and right half by what? nasal septum
What creates air turbulence in nose cavity? noses have bony conchae in lateral walls
All surfaces of nose cavity of covered by what? mucosa
What is the nasal cavity continuous with and how is it continuous with it? nasal cavity is continuous with PHARYNX through POSTERIOR NASAL APERTURES - choanae or the internal nares
The superior and middle nasal concha are part of what? which concha is not a part of this? ethmoid bone; inferior nasal concha is a separate bone
What is the MEATUS (superior inferior and middle) groove interior to each concha
What are the two types of mucosa in the nasal cavity? 1. Olfactory mucosa 2. Respiratory mucosa
What does the olfactory mucosa do and where is it located? olfactory mucosa house olfactory receptors and it is a small patch in the roof of the nasal cavity
What does the Respiratory mucosa do? lines all nasal cavity
Where do meatuses lie? meatuses lie under conchae,
What have numerous small openings into PARANASAI SINUSES? meatuses
What are the paranasal sinuses? air filled cavities in bones lined by respiratory mucosa
What does the Pharynx do? connects nasal cavity and mouth to the larynx and esophagus
The pharynx extends from where to where? the pharynx extends from internal nares (posterior nasal aperture) to cricoid cartilage
The nasopharynx is superior to the level of what? soft palate
The nasopharynx is ONLY a what? nasopharynx is ONLY an AIR PASSAGEWAY
The nasopharynx is closed off during swallowing by what? to prevent what? nasopharynx closed off by uvula to prevent food from entering nasal passages
Where is the pharyngeal tonsil located? located on posterior wall of nasal cavity
What destroys pathogens entering the nasal cavity? the pharyngeal tonsil
The pharyngeal tonsil contains the opening to what? pharyngotympanic (auditory) tube
What is the entrance way from the mouth into the oropharynx called? FAUCES
The oropharynx extends from what to what? extends from soft palate to epiglottis
What two tonsils acts as fauces? Palatine tonsil and the Lingual tonsil
What does the lingual tonsils do? covers the posterior surface of the tongue
The Laryngopharynx acts a passageway for what? food AND air
What is the laryngopharynx continous with? continous with the esophagus AND the larynx
What does esophagus do? conducts food and fluids to the stomach
what does the larynx do? conducts air to the respiratory tract and it is also the voice box
The larynx attaches to the what superiorly and is continous with what inferiorly? larynx is attached to hyoid bone superiorly and continous with trachea inferiorly
What are the three functions of the Larynx? 1. voice production 2. provides a continuously open airway
The larynx acts what to route what in to the proper channels? larynx acts as SWITCHING MECHANISM to route AIR AND FOOD into the proper channels
What lines all nasal cavity? respiratory mucosa
Created by: vs604
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