Author Question: How does the onset of the pubertal growth spurt compare in girls and boys? a. It occurs earlier ... (Read 151 times)

penza · **on:** Jun 28, 2018

How does the onset of the pubertal growth spurt compare in girls and boys?

a. It occurs earlier in boys.
b. It occurs earlier in girls.
c. It is about the same in both boys and girls.
d. In both boys and girls it depends on their growth in infancy.

Question 2

The head-to-tail direction of growth is referred to as:

a. Cephalocaudal. c. Mass to specific.
b. Proximodistal. d. Sequential.

mohan · **Reply #1 on:** Jun 28, 2018

Answer to Question 1

ANS: B
Usually, the pubertal growth spurt begins earlier in girls. It typically occurs between the ages of 10 and 14 years for girls and 11 and 16 years for boys. The average earliest age at onset is 1 year earlier for girls. There does not appear to be a relation to growth during infancy.

Answer to Question 2

ANS: A
The first pattern of development is the head-to-tail, or cephalocaudal, direction. The head end of the organism develops first and is large and complex, whereas the lower end is smaller and simpler, and development takes place at a later time. Proximodistal, or near-to-far, is the second pattern of development. Limb buds develop before fingers and toes. Postnatally the child has control of the shoulder before achieving mastery of the hands. Mass to specific is not a specific pattern of development. In all dimensions of growth, a definite, sequential pattern is followed.