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Respiratory System

Respiratory System. Respiratory System Function. 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. Accessory Structures. Oral Cavity

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Respiratory System

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  1. Respiratory System

  2. Respiratory System Function • 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

  3. RespiratoryTractDivisions

  4. AccessoryStructures • Oral Cavity • Rib Cage • Respiratory Muscles (Diaphragm)

  5. Nose • Nasal Cavity • hollow space behind the nose  • Nasal septum • divides the nose (bone) • Nasal Hair • In vestibule traps particles • Mucus Membrane • Starts in respiratory portion of nose (after vestibule) • warms and moistens air, also traps particles (dust)

  6. Nose • Nasal conchae • bones that divide the nasal cavity • support the mucus membrane • increase surface area (superior, middle, inferior)

  7. Nose See page 687 • Structure of the Nose • Move movement of Air through Nose

  8. Pharynx • behind the oral cavity, between the nasal cavity and larynx • space, not a structure

  9. PharynxFunction • Path for Respiratory Tract – air path to trachea • Path for Digestive Tract – food path to esophagus • Affects speech production (Vowel Sounds)

  10. PharynxStructure - Page 689 23-6 • Nasopharynx – Posterior nares to the soft palate • Oropharynx – Soft palate to Hyoid bone • Laryngopharynx – Hyoid bone to esophagus

  11. Larynx • below pharynx and enlargement at the top of the trachea • conducts air in and out of trachea

  12. Larynx • Voice Box • Vocal Chords- Glottis • Cartilages of Larynx • Thyroid Cartilage – Adams Apple • Epiglottis – prevents food/liquids in Trachea • Arytenoid – Vocal Chords attach here

  13. Larynx Cartilage

  14. LarynxMuscles • IntrinsicMuscles – Controls vocal cords • Extrinsic Muscles – Moves Larynx

  15. Lower Respiratory Tract • Bronchial Tree(p. 692, See p. 695, Fig 23-13) Parts in order from largest to smallest • Trachea/ Windpipe (11cm or 4.5 inches) • Primary Bronchi • Secondary Bronchi • Bronchioles • Alveolar ducts • Alveolar sacs •  Alveoli

  16. Alveoli- Gas Exchange • Gas Exchange

  17. LungStructure • 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?

  18. FunctionofLungs • Air Distribution • Gas Exchange

  19. Helpful Resources • Larynx • Steven Tyler's Voice • Respiratory Summary • Respiratory System

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