Quick Answer. The function of motor neurons is to release the neurotransmitter acetylcholine, which are released at a junction known as the neuromuscular junction, that bind to postsynaptic receptors, causing the muscle fiber to respond and result into a muscle movement.
The frontal lobe is what really sets us apart from animals, which controls one important aspect of humans: Self awareness. The thinking in terms of I am.. Animals don't do that. (although they DO have sex for pleasure.
(CESAR MANSO/AFP/Getty Images). Humans are clearly distinct from the rest of the animal kingdom yet, scientifically speaking, it's difficult to say exactly why. Thomas Suddendorf takes a look at how mankind achieved its position of global dominance and what that means for the future of our species and the planet.