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Respiratory System (Definitions of lung capacity terminology (Inspiratory…

- - - - Exchange of gases between blood and body cells
    - - Occurs in mitochondria of cell
      - Oxygen carried in hemoglobin in blood
- - - - Cavities with bones
        
        Frontal
        
        Maxillary bone
        
        Sphenoid
        
        Ethmoid
      - Produce mucus
    - - Muscular passage from nasal cavity to larynx
      - Three regions of pharynx
        
        Nasopharynx- superior region behind nasal cavity
        
        Oropharynx- middle region behind mouth
        
        Laryngopharynx- inferior region attached to larynx
    - - Olfactory receptors located in mucosa on superior surface
      - Rest lined with respiratory mucosa
    - - Air enters nose through external nares
      - Nasal cavity divided by nasal septum
  - - - The hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box.
    - - Fairly rigid because of the C-shaped rings made of hyaline cartilage to keep airways open all the time
      - Lined with ciliated mucus
      - Connects larynx with bronchi
    - - Enters the lung at hilus
      - Formed by division of trachea
    - - Lungs are a pair of spongy, air-filled organs located on either side of the chest
      - Occupy most of thoracic cavity
- - - - Left one is thinner and longer
      - the left main bronchus divides into two.
    - - The right main bronchus subdivides into three lobar bronchi
      - It is wider, shorter and straighter than left lung
  - - - Three lobes
      - The right lung is shorter and broader than the left lung
    - - Left lung is longer and narrow
      - Two lobes