The production of acid and enzymes by the gastric mucosa is controlled and regulated by what? a. the central nervous system b. short reflexes in the gastric wall c. digestive tract hormones d. all of the above e. none of the above

the elements of art are the visual tools that the artist uses to create a composition. these are line, shape, color, value, form, texture, and space.

the principles of art and design are balance, contrast, emphasis, movement, pattern, rhythm, and unity/variety.

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