Researchers have identified a neurotransmitter called that works like thc, the active ingredient in marijuana. excessive use of marijuana has been shown to reduce the production of this neurotransmitter.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.

the answer is d.) homologous; have mammary glands