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.
Humans have evolved a less diverse mix of gut microbes than great apes have. Gut microbes less diverse in humans: great apes harbor more varied bacterial populations The researchers demonstrated that bacteria in the gut, particularly members of the genus Lactobacillus, promote the growth of host epithelial cells and that this is essential for maintaining homeostasis in the intestinal system.