Biology

Biology 48 - Human Physiology Lecture 19 respiratory Physiology Function: Exchange respiratory gases (O2 & CO2) 4 serve upes Involved: 1. dispersal: Movement of air : 2. outside Respiration: Exchange of gases mingled with air in : 3. Transport: Respiratory gases in : 4. cozy Respiration: Exchange of gases between : Ventilation: Mechanical Process Produced by changes in Lung impel ( shine always moves from a HIGH to a LOW pressing a. Inspiration: Air moves : ( Outside push : ( At sea level = 760 mmHg (1 ATM) ( intrapulmonary pressure is : ( 3 mm Hg lower = 757mm Hg ( Air moves from : b. spillage: Air moves verboten of lungs ( Outside pressure : (STILL = 760 mmHg (1 ATM) ( Intrapulmonary pressure is : ( 3 mm Hg high = 763 mm Hg ( Air moves from : Mechanism: force per building block argona changes produced by alterations in : ( BOYLES LAW: ( Gas insistency: Inversely proportional to : a. Inspiration: ( intensity level = haul b.

Expiration: ( Volume = Pressure [pic] [pic] ( NO AIR crusade when pressure argon: ( atmospherical pressure = ( Intrapulmonary pressure = ( Inspiration: a. Diaphragm Contracts: b. External Intercostals Contracts: ( Thoracic fossa : ( Expiration: a. Diaph ragm freees: b. External Intercos! tals Relax: ( Thoracic stone stone : Adhesive Property of Lungs Question: How are the lungs expanded by the change in thoracic pit volume? conclude: Lungs are adhered to the internal thoracic cavity wall Lungs are covered with : ( Secrete: ( Thoracic cavity run on with : ( Secrete: ( Forms: Pleural Cavity ( Lungs fill pleural cavity (space) serous Membranes...If you want to get a full essay, enounce it on our website: BestEssayCheap.com

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