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• 09:27, 5 January 2023 Nikolas talk contribs created page File:Normal ECG 2.png
• 09:27, 5 January 2023 Nikolas talk contribs uploaded File:Normal ECG 2.png
• 09:24, 5 January 2023 Nikolas talk contribs created page 27. The human electrocardiogram (ECG). Electrocardiography. Bipolar and unipolar leads (Created page with "The human electrocardiogram, often called ECG, measures the electrical activity of the heart over time using electrodes placed on specific parts of the body. This is possible because a small part of the electrical impulse produced by the heart spreads into all parts of the body, including the skin. The cardiac impulse travels from the right atrium along the septum toward the apex of the heart, in a downward diagonal direction. == Characteristics of a normal ECG == A no...") Tag: Visual edit
• 09:22, 5 January 2023 Nikolas talk contribs created page File:Precordial leads.png
• 09:22, 5 January 2023 Nikolas talk contribs uploaded File:Precordial leads.png
• 09:21, 5 January 2023 Nikolas talk contribs created page File:Hexaxial reference system.png
• 09:21, 5 January 2023 Nikolas talk contribs uploaded File:Hexaxial reference system.png
• 09:21, 5 January 2023 Nikolas talk contribs created page File:Limb leads.png
• 09:21, 5 January 2023 Nikolas talk contribs uploaded File:Limb leads.png
• 08:09, 5 January 2023 Nikolas talk contribs created page File:Normal ECG.png
• 08:09, 5 January 2023 Nikolas talk contribs uploaded File:Normal ECG.png
• 08:08, 5 January 2023 Nikolas talk contribs created page File:QTc.png
• 08:08, 5 January 2023 Nikolas talk contribs uploaded File:QTc.png
• 15:25, 3 January 2023 Nikolas talk contribs created page 26. The sequence of events in the cardiac cycle (Created page with "== The structure of the heart == The heart consists of four chambers, two atria and two ventricles. We can divide the heart into two units, one left unit and one right unit, each unit consisting of one atrium and one ventricle. Venous blood from the body enters the right atrium through the superior and inferior vena cavae. Blood is pumped from the right atrium into the right ventricle through the tricuspid valve. Blood is then pumped from the right ventricle through the...") Tag: Visual edit
• 15:24, 3 January 2023 Nikolas talk contribs created page File:Wiggers diagram.png
• 15:24, 3 January 2023 Nikolas talk contribs uploaded File:Wiggers diagram.png
• 14:29, 3 January 2023 Nikolas talk contribs created page Category:Cardiology (Created page with "Category:Pages by subject") Tag: Visual edit
• 14:29, 3 January 2023 Nikolas talk contribs created page Category:Pages by POTE course (Created blank page) Tag: Visual edit
• 20:34, 13 December 2022 Nikolas talk contribs created page 25. Generators and conductors of impulses in the heart. Refractory periods (Created page with "The heart has a special system that allows it to be excited rhythmically and repetitively. There are two components to this system: # Pacemaker generators that generate regular and rhythmical electrical impulses which initiate rhythmical contraction of the heart muscle # A conduction system which conducts these impulses rapidly throughout the heart in a coordinated fashion When this system functions normally the atria contract one sixth of a second before the ventricle...") Tag: Visual edit
• 20:31, 13 December 2022 Nikolas talk contribs created page File:Refractory periods of ventricular muscle.png
• 20:31, 13 December 2022 Nikolas talk contribs uploaded File:Refractory periods of ventricular muscle.png
• 20:30, 13 December 2022 Nikolas talk contribs created page File:The all-or-none law.png
• 20:30, 13 December 2022 Nikolas talk contribs uploaded File:The all-or-none law.png
• 20:29, 13 December 2022 Nikolas talk contribs created page File:Ventricular muscle action potential.png
• 20:29, 13 December 2022 Nikolas talk contribs uploaded File:Ventricular muscle action potential.png
• 20:28, 13 December 2022 Nikolas talk contribs created page File:Heart conduction cycle gif.gif
• 20:28, 13 December 2022 Nikolas talk contribs uploaded File:Heart conduction cycle gif.gif
• 20:23, 13 December 2022 Nikolas talk contribs created page File:Cardiac conduction system only.png
• 20:23, 13 December 2022 Nikolas talk contribs uploaded File:Cardiac conduction system only.png
• 20:21, 13 December 2022 Nikolas talk contribs created page File:Cardiac conduction system.png
• 20:21, 13 December 2022 Nikolas talk contribs uploaded File:Cardiac conduction system.png
• 20:20, 13 December 2022 Nikolas talk contribs created page File:SA node action potential.jpg
• 20:20, 13 December 2022 Nikolas talk contribs uploaded File:SA node action potential.jpg
• 20:14, 13 December 2022 Nikolas talk contribs created page 22. A-B-0 blood groups. The Rh blood types (Created page with "== Cell antigens == All cells have many proteins on the outside of their cell membranes. We say that the cells ''express'' these proteins. Different cells express different proteins, which allows them to interact with other cells and the environment differently. All proteins are also ''antigens''. An antigen is a molecule which the immune system can recognize. When a person is infected with a bacterium for example, the immune cells will recognize the antigens (proteins)...") Tag: Visual edit
• 20:05, 13 December 2022 Nikolas talk contribs created page 21. Regulation of H+ ion concentration in the blood (Created page with "''[H+] means the concentration of H+ ions. The brackets mean “concentration”.'' == pH == The pH of a solution depends on the solution’s concentration of hydrogen ions (H+). The higher the concentration of H+ ions, the lower the pH and vice versa. The pH of a solution is determined by the following formula: pH = -log(concentration of H+) or pH = -log([H+]). If we know the pH we can calculate the H+ concentration by this formula: [H+] = 10-pH pH is a logarithmic...") Tag: Visual edit
• 20:03, 13 December 2022 Nikolas talk contribs created page File:PH formula.png
• 20:03, 13 December 2022 Nikolas talk contribs uploaded File:PH formula.png
• 19:58, 13 December 2022 Nikolas talk contribs created page File:PH ranges.png
• 19:58, 13 December 2022 Nikolas talk contribs uploaded File:PH ranges.png
• 19:56, 13 December 2022 Nikolas talk contribs created page 18. Describe the two pathways involved in the initiation of blood coagulation (Created page with "== Haemostasis == Haemostasis is the body’s response to stop bleedings after endothelial damage. It consists of three steps: * Primary haemostasis ** Local vasoconstriction ** Platelet plug formation * Secondary haemostasis ** Clot formation * Fibrinolysis ** Dissolving the blood clot === Coagulation factors === Most of the components involved in haemostasis are found in the blood. The first are the platelets. The second are the coagulation factors. The coagulation f...") Tag: Visual edit
• 19:34, 13 December 2022 Nikolas talk contribs created page File:Coagulation cascade.png
• 19:34, 13 December 2022 Nikolas talk contribs uploaded File:Coagulation cascade.png
• 19:30, 13 December 2022 Nikolas talk contribs created page 17. The basic structure and metabolism of haemoglobin and the metabolism of iron (Created page with "== Haemoglobin == The red colour of RBCs comes from the fact that they contain a lot of haemoglobin (Hb). In fact, haemoglobin accounts for 95% of all proteins inside a red blood cell. The function of haemoglobin is to carry oxygen in the blood. 1 gram of Hb can bind 1.39 mL of O2 gas. 99,7% of oxygen in the blood is transported via haemoglobin; only 0,3% of oxygen is dissolved in the blood. There is a lot of haemoglobin in each RBC, so that 35% of the RBCs size comes...") Tag: Visual edit
• 19:30, 13 December 2022 Nikolas talk contribs created page File:Iron metabolism.png
• 19:30, 13 December 2022 Nikolas talk contribs uploaded File:Iron metabolism.png
• 19:29, 13 December 2022 Nikolas talk contribs created page File:Ferritin structure.jpg
• 19:29, 13 December 2022 Nikolas talk contribs uploaded File:Ferritin structure.jpg
• 19:27, 13 December 2022 Nikolas talk contribs created page 16. Origin and function of blood platelets (Created page with "== Thrombocytes == Thrombocytes, also called platelets, are a component of blood whose function is to clump together to form a ''platelet plug'' stop bleeding. They have a lifetime of 8 – 12 days in the plasma. The normal number of platelets is 150 000 – 400 000/µL. They are 1 – 3 µm in size. Platelets that have been in the plasma for longer than 12 days are removed from the circulation by the spleen. If there is a problem with the spleen will the elimination of...") Tag: Visual edit
• 19:25, 13 December 2022 Nikolas talk contribs created page 15. Characterize the various leukocytes indicating their origins and functions (Created page with "== White blood cells == White blood cells (WBCs) are the cells which combat infections. They are a major part of the immune system. Recall the number and types of WBCs: {| class="wikitable" |'''Cell type''' |'''Number''' |- |White blood cell (WBC) |4 000 – 11 000/µL |- |'''N'''eutrophils |60% of all WBCs |- |'''L'''ymphocytes |35% of all WBCs |- |'''M'''onocytes |5% of all WBCs |- |'''E'''osinophils |3% of all WBCs |- |'''B'''asophils |0-1% of all WBCs |} A good way t...") Tag: Visual edit
• 19:23, 13 December 2022 Nikolas talk contribs created page File:Price-Jones curve.png