Transcript Respiratory System

RESPIRATORY
SYSTEM
Respiratory System Function
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Air distributor – all parts but Alveoli
Gas Exchanger - Alveoli
Air Filter - Nose
Air warmer – Nose/Mouth
Air humidifier – Nose/Mouth
Regulation of homeostasis, pH of Body
Respiratory Tract Divisions
Upper Respiratory Tract Lower Respiratory Tract
Nose
Nasopharynx
Oropharynx
Laryngopharynx
Larynx
Trachea
All of Bronchial Tree
Lungs
Accessory Structures
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Oral Cavity
Rib Cage
Respiratory Muscles (Diaphragm)
Nose
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Nasal Cavity
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Nasal septum
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divides the nose (bone)
Nasal Hair
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hollow space behind the nose
In vestibule traps particles
Mucus Membrane
Starts in respiratory portion of nose (after vestibule)
 warms and moistens air, also traps particles (dust)
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Nose
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Nasal conchae
 bones
that divide the nasal cavity
 support the mucus membrane
 increase surface area (superior, middle, inferior)
Nose
See page 687
• Structure of the Nose
• Move movement of Air
through Nose
Pharynx
behind the oral cavity, between the nasal
cavity and larynx
 space, not a structure
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Pharynx Function
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Path for Respiratory Tract – air path to trachea
Path for Digestive Tract – food path to esophagus
Affects speech production (Vowel Sounds)
Pharynx Structure Page 689 23-6
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Nasopharynx –
Posterior nares to the
soft palate
Oropharynx – Soft
palate to Hyoid bone
Laryngopharynx –
Hyoid bone to
esophagus
Larynx
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below pharynx and
enlargement at the
top of the trachea
conducts air in and
out of trachea
Larynx
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Voice Box
Vocal Chords- Glottis
Cartilages of Larynx
 Thyroid
Cartilage – Adams Apple
 Epiglottis – prevents food/liquids in Trachea
 Arytenoid – Vocal Chords attach here
Larynx Cartilage
Larynx Muscles
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Intrinsic Muscles – Controls vocal cords
Extrinsic Muscles – Moves Larynx
Lower Respiratory Tract
Bronchial Tree (p. 692, See p. 695, Fig 23-13)
Parts in order from largest to smallest
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 Trachea/
Windpipe (11cm or 4.5 inches)
 Primary Bronchi
 Secondary Bronchi
 Bronchioles
 Alveolar ducts
 Alveolar sacs
 Alveoli
Alveoli- Gas Exchange
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Gas Exchange
Lung Structure
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There are 5 lobes in
the lungs
 Two
Superior lobes
(one on both sides)
 One Middle lobe
(Right side ONLY)
 Two Inferior lobes (one
on both sides)
See page 698 – 699
How many on right? Left?
Function of Lungs
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Air Distribution
Gas Exchange
Helpful Resources
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Larynx
 Steven
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Tyler's Voice
Respiratory Summary
 Respiratory
System