The nervous parent asks when the big "soft spot" (anterior fontanel) will be closed. The nurse's most informative response would be

A. Engaging the child in games with other children is important for social development, but it depends on the child's individual readiness and comfort level with social interactions. It's crucial to consider the child's temperament and developmental stage.

B. Encourage the child to feed himself finger foods.

At 18 months of age, children are typically developing their fine motor skills and independence. Encouraging self-feeding with finger foods is a developmentally appropriate activity. It promotes independence, fine motor skill development, and a positive feeding experience.

C. Allowing the child to walk independently on the nursing unit is appropriate if the child is developmentally ready and safe to do so. It promotes gross motor skill development and independence.

D. Holding and cuddling the child often is important for emotional and social development. However, the frequency and style of interaction should be individualized based on the child's preferences and needs. Some children may prefer more independence at this age.

A. Insulin is responsible for lowering blood glucose levels by promoting the uptake and storage of glucose in cells.

B. Epinephrine (adrenaline) can raise blood glucose levels in response to the "fight or flight" stress response, but it's not primarily responsible for stimulating liver glycogenolysis.

C. Glucagon is produced by the alpha cells in the islets of Langerhans and plays a crucial role in increasing blood glucose levels. It promotes the breakdown of glycogen (glycogenolysis) in the liver and the production of glucose from non-carbohydrate sources (gluconeogenesis).

D. Adrenocorticotropic hormone (ACTH) is produced by the anterior pituitary gland and stimulates the adrenal cortex to release cortisol, which can also contribute to raising blood glucose levels but isn't primarily responsible for liver glycogenolysis.

In the context of diabetes management, understanding the role of glucagon is important because it helps individuals know how to manage hypoglycemia (low blood sugar) by administering glucagon or consuming fast-acting sources of glucose.