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Respiratory System

Respiratory System. Cindy Quisenberry. Respiratory system. Lungs – provide the body with O2 and eliminates CO2 Right Lung 3 lobes Left Lung 2 lobes Pleura – membrane on the outside of the lung Parietal Pleura – outer layer Visceral Pleura – inner layer

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Respiratory System

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  1. Respiratory System Cindy Quisenberry

  2. Respiratory system • Lungs – provide the body with O2 and eliminates CO2 • Right Lung • 3 lobes • Left Lung • 2 lobes • Pleura – membrane on the outside of the lung • Parietal Pleura – outer layer • Visceral Pleura – inner layer • Plural Cavity – space b/w the 2 pleura

  3. Lungs

  4. Respiratory tract

  5. Respiratory tract Nose Pharynx Larynx Trachea Right Lung Left Lung Bronchi Bronchioles Diaphragm Aveoli Capillaries Venule Arteriole Bronchiole

  6. Two major tasks • External Respiration (Breathing) – the exchange of air between the body and the outside environment • Internal Respiration – the process of bringing O2 to the cells and removing CO2 from them

  7. 2 actions of external respiration • Inhalation – breathing in • Diaphragm contracts by flattening and the intercostal muscles raise the ribs; increases the space in the the thoracic cavity and air rushes in • Exhalation – breathing out • Diaphragm relaxes and the ribs lower, causing air to rush out

  8. Upper respiratory system

  9. Upper respiratory system Frontal Sinus Pharyngeal Tonsil - Adenoids Nostril Hard Palate Nasopharynx Uvula Palatine Tonsil Tongue Oropharynx Epiglottis Lingual Tonsil Laryngopharynx Larynx Esophagus Trachea

  10. The throat / pharynx • Three sections • Nasopharynx • Pharyngeal tonsils (adenoids) – aid in the body’s immune defense • Oropharynx – triggers swallowing • Palatine tonsils – part of the immune system • Laryngopharynx – divides into 2 sections

  11. esophagus • Passageway for food • Part of the GI tract • Epiglottis prevents food from entering the larynx (glottis) • What is the term for when food goes into the larynx instead of the esophagus? • What is the procedure for dislodging food that is causing someone to choke?

  12. The larynx (voice box) • Air passes to the trachea • Produces sounds of speech and singing • Contain the vocal cords • Size and thickness of the cords determine the pitch • Supported by the thyroid cartilage

  13. The trachea and lower lung passages • Connects the larynx to the right and left bronchi • Bronchi are the passageways through which air enters the lungs • The bronchi are divided into smaller tubes called bronchioles

  14. External respiration • The air between the body and the outside environment is exchanged. • What is another term for external respiration?

  15. Terms you should know • Internal Respiration • Oxygen is carried to and from the cells. • What is removed from the cells? • External Respiration • The air between the body and the outside environment is exchanged. • What is another term for external respiration? • What is cilia?

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