Physiology software info

[Edgardo A. Martorell]

I am looking for an animated physiology software or cd-rom that can be used 
in teaching an intermediate college level physiology course.  I am looking 
for animated graphics of the nerve impulse conduction resting and action 
potential, feedback control loops, muscle contraction, homeostasis, 
endocrinology, blood glucose regulation, etc.  It can be a general or 
specific software.  Please let me know of any available softwares of this 
kind being used in other educational institutions or available 
comercially. 

Thank you for your attention