Describe the role of fermentation in maintaining ATP and NAD+ levels

NAD+ allows glycolysis to continue. As you can see, the role of fermentation is simply to provide glycolysis with a steady supply of NAD+. By itself, fermentation does not produce ATP. Instead, it allows glycolysis to continue to produce ATP.

Explanation:

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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.