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Chapter 21 part 1
The Resipiratory System Part I
Question | Answer |
---|---|
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 |