I always thought the silver colour specific to nerves was due to the myelin sheaths, but I've observed that unmyelinated C fibres display that same silvery appearance. Where does this colour come from? And can you distinguish myelinated from unmyelinated fibre bundles with the naked eye from thei...

Next to non-linearity (see below), the inertness of voltage gated ion channels lies at the heart of action potential generation: if ion channels were not inert as they are, action potentials would not occur like they do. In fact it's not about the inertness of ion channels as a whole, but about ...

I read that most reptiles don't even care about their offsprings and let them fend for themselves. But other reptiles, like crocodiles, do tend their hatchlings for a brief period. My question is: would a croc recognize his young from others? If so, how? (smell, appearance, etc.)