SpinelSun
Active member
It was long assumed that flatworms (like planarians) had no brains because of their simple, flat bodies. 
However, flatworms actually have a very simple brain-like structure called a cephalic ganglion, which acts as a primitive brain. 
This allows worms to learn, remember, and even regenerate their heads.
However, flatworms actually have a very simple brain-like structure called a cephalic ganglion, which acts as a primitive brain. This allows worms to learn, remember, and even regenerate their heads.
It’s fascinating to learn that they have a cephalic ganglion acting like a primitive brain. Who knew these little creatures could learn and even regenerate their heads? Nature never ceases to amaze me with its surprises! 
