Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

The integumentary system has multiple roles in homeostasis, including protection, temperature regulation, sensory reception, biochemical synthesis, and absorption. All body systems work in an interconnected manner to maintain the internal conditions essential to the function of the body.

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.