What are these. need to know by morning

Which of the following is found in the cavities of bone? periostreum endostreum fibrous tissue bone marrow

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

Aclient is scheduled for a diagnostic examination. what will the nurse do first?