Please enable JavaScript.

Coggle requires JavaScript to display documents.

respiratory system (lung volume (modified respiratory movement (coughing,…

- - - - 1inhale and 1 exhale
  - - - about 500 mL
        
        normal breathing at rest
  - - - during maximal inhalation
  - - - after forced expiration
        
        keeps lunga inflated
  - - - does not reach alveoli
  - - - tidal volume + inspirational reserve volume
    - - residual volume+ expiratory reserve volume
    - - inspiratory volume+ tidal volume+ expiratory reserve volume
    - - sum of all volumes
- - - - pl= pressure of atmosphere
      - pa= 760 mmHg
    - - air leaving the lungs
        
        exhale
    - - flow of air into the lungs
        
        inhale
  - - - decrease pressure
    - - moves sternum forward
    - - scalene muscles, sternocleidomastoid, and pectoralis minor
  - - - moving air in and out of the lungs
    - - oxygen is carried as oxyhemoglobin in blood
    - - the exchange of gas between the blood and body cells
  - - - diaphragm and rib muscles relax
    - - decrease lung volume
        
        incresaes pressure
        
        forces air out of lungs
    - - requires contraction of intercostal muscles and abdominal muscles
- - - - air enters nose through external narse
    - - nasal cavity divided by nasal septum
      - lateral walls have conchae
      - olfactory receptors located in mucosa on superior surface
      - rest lined with respiratory mucosa
        
        moistens air
        
        trps foreign incoming particles
    - - muscular passage from nasal cavity to larynx
      - three regions
        
        nasopharynx
        
        superior region behind nasal cavity
        
        oropharynx
        
        middle region behind mouth
        
        laryngopharynx
        
        inferior region attached to the larynx
  - - - connects larynx with bronchi
      - fairly rigid because of C-shaped rings made of hyaline cartilage
        
        to keep airway open at all times
    - - formed by division of trachea
      - enters lungs at hilus
      - right bronchus is wider, shorter, and straighter than the left due to the presence of the heart on the left
    - - left
        
        smaller than right
        
        due to the location of the heart on left side
        
        divided into two lobes
      - right
        
        larger in size
        
        divided into 3 lobes
      - hold the bronchial trees
      - occupy most of the thracic cavity
      - apex is near clavicle
      - base rests on diaphragm