NUR5011 Lecture Notes - Lecture 3: Mucokinetics, Corticosteroid, Opiate
3 Jun 2020
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Right lung has superior, middle and inferior lobes, left lung only has superior and inferior. Macrophages (wbc) are in the lungs to help fight pathogens/dust and other small particles we breathe in. Type 1 alveolar cell is for diffusion and is very thin membrane. Type 2 secrete surfactant which makes it easier for gas exchange. Inspiration: pressure in lungs decrease and diaphragm contracts and moves down to allow air in. Expiration: pressure in lungs increase, diaphragm relaxes, rib cage moves down and in. In lung becomes 104 because of moisture pco2 of 0. 3. Arterial end of lungs po2 is 40, pco2 is 45. O2 goes from alveoli to capillaries into the plasma then 92% is taken up into haemoglobin (4 haem in each) Here are your key anatomical markers for chest auscultation: Upper lobe conditions listen to back, lower lobes from the front crackles with fluid like pneumonia/cardiac failure air trapping is with extreme asthma.
