Looking for Anatomy & Physiology research Topic

[livezeyp]

Need to do a 5 page research paper for A&P 1. It can not be any disease, or degeneration. Any suggestions of a good interesting topic? I need to ACE this class!
Thanks!
Pattie

[JackBean]

I guess, it's supposed to be human physiology.
What about liver as body factory? Or some xenobiochemistry.