second messengers

[natty]

can anyone give me a basic overveiw or a link to a simple explanation of the IP3 SECOND MESSENGER SYSTEM? this isn't an essay question or anyting, i'm revising for medical exams and am just geting bogged down with all this confusing biochemisrty, grrrrrr

[frogfactory]

You must have a copy of Ganong's Human Physiology if you're a medical student - have a look in there! Otherwise try Barret's Communication Within Animal Cells, Oxford University Press