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1. Mrs. Black is bringing her adolescent daughter in for her follow-up
visit. Which of the following statements is true about sexual
maturation?
A. Breast and pubic hair development are not related to a growth spurt.
,B. Sexual maturation occurs later in girls than boys.
C. Mexican American girls enter puberty later than blacks and earlier
than whites.
D. Sexual maturation occurs later in taller girls. - Answer: C. Mexican
American girls enter puberty later than blacks and earlier than whites.
Sexual maturation begins earlier in girls with a higher body mass index.
On average, black girls enter puberty first, followed by Mexican
American girls, and then white girls.
1. Mrs. Jones has brought her 4-month-old female infant in for her
routine physical. Which statement is true about the baby's expected
weight?
A. Weight doubles during the first 3 months, then triples by 1 year.
B. Weight doubles during the first 4 to 5 months, then triples by 1 year.
C. Weight doubles during the first 6 months, and doubles again by 1
year.
D. Weight doubles during the first 6 months, and then triples by 18
months. - Answer: B. Weight doubles during the first 4 to 5 months,
then triples by 1 year.
,In general, infants double their birth weight by 4 to 5 months of age
and triple their birth weight by 12 months of age. The remaining
answers are not true.
1. The appearance of secondary sexual characteristics in an 8-year-old
boy followed by progressive sexual maturation can be indicative of
which problem?
A. Cushing syndrome
B. Klinefelter syndrome
C. Testicular tumor
D. Brain tumor - Answer: D. Brain tumor
A brain tumor or lesion (e.g., hypothalamic hamartoma) may activate
the hypothalamic-pituitary-gonadal axis, with gonadotropins triggering
the growth of the gonads, secretion of the sex hormones, and
progressive sexual maturation. Answers a, b, and c result in different
characteristics.
Which of the following inhibits the pituitary from releasing growth
hormone?
A. Growth hormone-releasing hormone
B. Insulin-like growth factor
C. Somatostatin
, D. Sex steroids - Answer: C. Somatostatin
Somatostatin inhibits the secretion of both growth hormone-releasing
hormone (GHRH) and thyroid-stimulating hormone. Growth hormone is
secreted in pulses, with 70% of secretion occurring during deep sleep.
Growth of which body region predominates during infancy?
A. Head
B. Arms
C. Trunk
D. Legs - Answer: C. Trunk
During infancy, the growth of the trunk predominates. Weight gain is
initially rapid, but the speed with which weight is gained decreases over
the first year of life. Growth of the head predominates during the fetal
period. Growth of legs predominates during childhood.
In the older adult patient, stature begins to decline at:
A. 40 years of age.
B. 50 years of age.
C. 60 years of age.