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Access 800+ videos on Basic Medical Sciences & Clinical Medicine. Trusted by 80% of Medical, Dentistry, Nursing & Pharmacy students in 190 countries. Goljan_High_yield_Pathology_Questions.World's Most Popular Medical Lectures. Goljan-High-Yield (Step 1 Remembered Questions) Link to Download Goljan USMLE Step 1 Audio Lectures 2020 is given bellow:ĭownload Link Goljan Rapid Review Pathology Nutrition_Neoplasia_Hematology: Link here Link Goljan Pathology Transcript: Server 1 – Server 2 In true RBC, anaerobic glycolysis is the main energy source b/c they do not have mitochondria not normal in other tissues (want to utilize FA’s, TCA, etc)” Download Goljan Pathology Audio Lectures (Complete Lectures): Therefore, with tissue hypoxia there will be swelling of the cell due to decreased ATP (therefore will get O2 back, and will pump it out – therefore it is REVERSABLE). With no ATP, Na into the cell and it brings H20, which leads to cellular swelling (which is reversible). Na/K pump – blocked by digitalis to allow Na to go into cardiac muscle, so Ca channels open to increase force of contraction (therefore, sometimes you want the pump blocked), and sometimes you want to enhance it. ATP is the power, used by muscles, the pump, anything that needs energy needs ATP. 2nd problem of lacking ATP: all ATP pumps are screwed up b/c they run on ATP. Therefore, buildup of lactic acid within the cell will lead to Coagulation necrosis.Ģ. Tissue hypoxia will therefore lead to COAGULATION necrosis (aka infarction). As a result, cells cannot autodigest anymore b/c enzymes are destroyed b/c buildup of acid. Mitochondrial system is totally shut down (no O2 at the end of the electron transport system – can only get 2 ATP with anaerobic glycolysis). Good news – get 2 ATP Bad news – build up of lactic acid in the cell and outside the cell (increased anion-gap metabolic acidosis with tissue hypoxia) due to lactic acidosis from anaerobic glycolysis. However, causes havoc inside the cell b/c increase of acid within a cell will denature proteins (with structural proteins messed up, the configuration will be altered) enzymes will be denatured, too. Performing anaerobic glycolysis, therefore surviving on 2 ATP per glucose if you have tissue hypoxia. Every cell (including RBC’s) in the body is capable of Why do we have to use anaerobic glycolysis with tissue hypoxia? Mitochondria are the one that makes ATP however, with anaerobic glycolysis, you make 2 ATP without going into the mitochondria. Most imp: have to go into anaerobic glycolysis end product is lactic acid (pyruvate is converted to lactate b/c of increased NADH) need to make NAD, so that the NAD can feedback into the glycolytic cycle to make 2 more ATP.