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4 Cards in this Set
- Front
- Back
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Daily ATP Useage |
100-150 ATP moles used by cells daily 150 ATP moles = 9 x 10^25 molecules 50-75kg ATP needed in a single day Each ADP molecule is recycled 1000-1500 times daily The brain consumes most of this |
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Human Brain |
Glucose is the main energy source This links with brains high oxygen comsumption 2% of body weight 15% blood supply 20% oxygen consumption 25% glucose Most energy demanding organ in nature Consumption is out of proportion to size High maintenance = vulnerable No other organ is as sensitive to energy loss |
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Where is ATP Used in the Brain |
High energy processes in the neurones -Active K+ transport -Glutamate signalling |
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Glutamate Signalling |
Enzyme Na+K+ATPase is an ATP synthase in reverse gear Glutamate mediates most of the excitatory signalling in human brain It opens cation channels thus activating post-synaptic membrane |
