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	Science Forum Forum Index » Biology » Creatine Phosphate  Creatine Phosphate « View previous topic :: View next topic »  Author Message ferrari599 Posted: Fri Jun 13, 2008 1:32 pm    Post subject: Creatine Phosphate Forum Freshman Joined: 13 Jun 2008 Posts: 1 I am confused as to what the role of PCr in muslce contrraction actually is. I understand that it used to to convert ADP to ATP, however I do not understand where the PCr comes from. Does the PCr not come from respiration itself in a reverse of the reaction described above? Consequently, what is the point of using ATP to produce PCr and then using Pcr to produce ATP? It doesnt make sense to me; please can someone explain? Thanks for any help in advance! Back to top i_feel_tiredsleepy Posted: Fri Jun 13, 2008 2:29 pm    Post subject: Forum Masters Degree Joined: 21 Mar 2008 Posts: 589 Location: Montreal Phosphocreatine can produce ATP very quickly without producing damaging metabolic waste under anaerobic conditions. So your body makes PCr so that under anaerobic conditions they can still function. PCr stores usually last about 2-7 seconds they are usually used to fuel burst of muscle movement. PCr is also found in brain cells where it is used for the same purpose. So your body produces PCr, expends energy in the process, so that it can have access to quick energy when there is no oxygen. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First     Page 1 of 1 Science Forum Forum Index » Biology » Creatine Phosphate Jump to: Select a forum Natural Sciences----------------Astronomy & CosmologyBiologyChemistryEarth SciencesMathematicsPhysics People----------------Behavioral & Social SciencesHealth & MedicinePhilosophical DiscussionHistoryReligionPoliticsCriminology and Forensic Science General Technology----------------Computer ScienceElectronicsMilitary Technology Information Technology----------------Business & EconomicsEducationEngineering & Transportation International Issues----------------Environmental IssuesIn the News The Science Forum----------------General DiscussionIntroductionsScience-Fiction and Non-FictionExperimentationPseudoscienceLinksArt and Culture Site Administration----------------Site FeedbackTrash Can  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
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