Answer to Question 1
ANS: B
Being highly active, irritable, irregular in habits, and adapting slowly to new routines, people, or situations is a description of difficult children, which compose about 10 of the population. Negative withdrawal responses are typical of this type of child, who requires a more structured environment. Mood expressions are usually intense and primarily negative. These children exhibit frequent periods of crying and often violent tantrums. Easy children are even tempered, regular, and predictable in their habits. They are open and adaptable to change. Approximately 40 of children fit this description. Slow-to-warm-up children typically react negatively and with mild intensity to new stimuli and adapt slowly with repeated contact. Approximately 10 of children fit this description. Fast-to-warm-up is not one of the categories identified.
Answer to Question 2
ANS: D
Lymphoid tissue continues growing until it reaches maximal development at ages 10 to 12 years, which is twice its adult size. A rapid decline in size occurs until it reaches adult size by the end of adolescence. The tissue reaches adult size at 6 years of age but continues to grow. The tissue is well developed at birth.
Malignant melanoma. This photograph demonstrates the highly characteristic color of this tumor.
Active exercise.
Caregivers’ responses sometimes help a child with strong emotions adapt to the environment.
The ability to solve problems may be highly efficient in the older adult
The Growing Child
A karyotype shows this child has three copies of chromosome 21.