Explain the causes of acne. How can it be treated?

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer

Define physical activity. question 3 options: bodily movement produced by the contraction of muscles planned and structured exercise the ability to perform rigorous activity all the above

Sarah’s friend had been binge drinking and was intoxicated. sarah immediately called 9-1-1, and then sarah tried to keep her friend awake and her sit up.