Cards (9)

    • Lung and gills --> Exchange gasses
    • Which of the following is responsible for generating pressure in pulmonry arteries?
      Systole of the right ventricle
    • Which of the following is the primary site of gas exchange ?
      Alveoli
    • nasal cavity→ Air is warmed, humidified and filtered
    • Pharynx : food and air 
    • Larynx→ Voice box
    • Trachea : Cylinder tube made up of rings of cartilage that help support the trachea and keep it open for the air to travel through
    • Alveoli (in the alveolar sac ) is where the gas exchange occurs 
      Made of thin walled cells, have a lot of surface area and are in direct contact with capillaries 
    • Nervous system regulates the involuntary breathing 
      It uses pH to do so. 
      Increase of CO2 concentration increases H+ concentration, so the blood pH become more acidic, this acidity tells the brain to send a signal to the intercostal muscles (los músculos que nos ayudan a respirar) and restores the pH to return to pH 7