Physiology 2130 Lecture Notes - Lecture 12: Hydrochloric Acid, Distal Convoluted Tubule, Sodium Bicarbonate
25 May 2016
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Module 12: acid-base balance| page 1 of 6. Many chemical reactions that take place in the body, and most of the machinery inside all the cells, are very sensitive to the presence of hydrogen ions. Hydrogen ions can alter the shape of proteins that act as enzymes that speed up chemical reactions: therefore, it is essential that h+ concentration is very carefully regulated. Hydrogen atom has a single proton (positively charged) and a single electron (negatively charged) neutral. Hydrogen ion (h+) has a single proton and no electrons. Base any molecule that will accept a hydrogen atom: bicarbonate ions hco3. Normal ph of body fluids varies slightly between 7. 35 and 7. 45 and has an average of 7. 4 (slightly alkaline) Module 12: acid-base balance| page 2 of 6. Arterial blood has a ph of 7. 45 and venous blood has a ph of 7. 35. Acidosis ph of body fluids below 7. 4.
