BIOL 2420 Lecture Notes - Lecture 8: Alveolar Macrophage, External Intercostal Muscles, Internal Intercostal Muscles

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 2420
• Professor: Diana Mlinar

Document Summary

Primary functions of the respiratory system: respiration, external respiration. Air enters the lung - alveoli - capillary - tissues - exits into ecf - cytoplasm - mitochondria. Oxygen utilization by mitochondria to produce atp. Forms co2: homeostatic regulation of body ph. Done by selectively retaining or releasing co2. Co2 + h2o =(ca) = h2co3=h + hco3. If body gets to acidic - h+ is high, to offset this, increasing the rate of respiration draws the reaction backwards and gets rid of co2. Traps and destroys pathogens that enter the respiratory tract. Cilia on the outside of the cell - they trap dust, bacteria, and others. Goblet cells are on the cell and makes mucus that goes onto the cilia. The cilia beats and the mucus builds up and you get a cough reflex. Alveolar macrophage are in the bottom for the material that isn"t caught in the cilia. Produces/activates others (involved in the conversion of angiotensin 1 to 2)