Physiology 2130 Lecture Notes - Lecture 12: Carbonic Anhydrase, Carbonic Acid, Peripheral Chemoreceptors
5 Aug 2016
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Defining the relationship between hydrogen ions (h+) and acidity. Define what acids and bases, ph scale is. Determine why is it important to maintain h+ at precise levels. Different mechanisms to regulate h+ concentrations (therefore ph) Many chemical reactions in the body are sensitive to the presence of h+ ions. H+ (acidity) can alter the shape of enzymes. Changes in h+ concentrations will affect activities of almost every cell therefore it must be regulated closely. Hydrogen atom has a single proton and electron; is electrically neutral. Hydrogen ion lacks an electron, is positively charged and often simply called a proton. A molecule that releases hydrogen ions when placed in a solution. Example: hcl dissociates into h+ and cl-; the presence of h+ makes the solution acidic. More free h+ = more acidic the solution. A strong acid dissociates rapidly and releases large amounts of h+ in solution (e. g. hcl)
