Which drug is often a gateway to other drugs?

As you sit in the library with your friend studying for your weekly quiz on the integumentary system, you come upon an article about the hazards of prolonged exposure to the sun's rays. your curious nature leads you to research the subject further. you're fascinated to learn that minimal exposure to the sun allows you skin to manufacture vitamin d, which is important to maintain homeostasis. you also read that although sunscreen can protect you from the ultraviolet (uv) rays of the sun, some medications can actually increase a person's sensitivity to the sunlight.

The parents of an infant born with myelomeningocele are confused about the primary healthcare has told them about the condition. what should the nurse consider before answering the parents questions in language that they will understand?

Control center is it involved in homeostasis