PSL301H1- Final Exam Guide - Comprehensive Notes for the exam ( 67 pages long!)
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PSL301H1 Full Course Notes
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Document Summary
Gas exchange in/out of the lungs, regulates blood ph via co2, defense against inhaled pathogens. We defend against inhaled pathogens thru mucous, nose hairs, mucous elevator, macrophages, antibodies that are secreted al the way thru the respiratory tract. At the top its larynx, then trachea, then bronchai (primary( then brunchus, then at the bottom its bronchioles. We change the volume of the lungs by changing the volume of the thorasic cavity. When outside pressure is the same as inside the lungs, theres no air movement. If we increase volume of the lungs, then and moves into the lungs because outside pressure is greater than alveolar pressure. We need to make the inside pressure slightly lower than 760mmhg. We need to cause the lung volume to be slightly less, we have to raise it by 1 to move the air out. The top 3 muscles are important for raising up the ribs allowing for move volume.
