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RESPIRATORY SYSTEM (LUNG CAPACITY (Tidal Volume- air moved by one…

- - - - Squamous cell carcinoma
      - Adenocarcinoma
      - Small cell carcinoma
- - - - Out-pouching of alveolar duct
      - Sites of gas exchange surrounded by capillaries
      - Produce surfactant allows alveoli to expand
  - - - Oxygen enters blood
      - Carbon dioxide enters alveoli
- - - - Air enters nose through external nares
      - Nasal Cavity divided by nasal septum
    - - Olfactory receptors located in mucosa on superior surface
      - Rest lined with respiratory mucosa
      - Lateral walls have conchae
    - - Lighten the skull
      - Resonance chambers for speech
      - Cavities within bones
      - Produce mucus
    - - Nasopharynx- Superior region behind nasal cavity
      - Oropharynx- Middle region behind mouth
      - Muscular passage from nasal cavity to larynx
      - Laryngopharynx- Inferior region attached to larynx
      - Oropharynx and laryngopharynx are common passageways for air and food
  - - - Connects larynx with bronchi
      - Fairly rigid because of the C-shaped rings made of Hyaline cartilage (to keep airway open at all times)
      - Lined with ciliated mucosa
    - - Enters the lung at hilus
      - Right bronchi is wider, shorter and straighter due to heart on left side
      - Formed by division of trachea
      - Bronchi subdivide into smaller branches
    - - Base rets on diaphragm (inferior)
      - Each lung is divided into lobes (2 on left; 3 on right) by fissures
      - Apex is near clavicle (superior)
      - Occupy most of the thoracic cavity