Growth, Puberty and Adolescence

Question 1

Standard deviation is a measure of what?

Answer 1

Variability from the mean

Question 2

What is a Z-score?

Answer 2

The number of standard deviation from the mean

Question 3

What percentage of individuals will be within

a) 1 SD of the mean
b) 2 SD of the mean
c) 3 SD of the mean

Answer 3

a) 68%
b) 95%
c) 99.7%

Question 4

In the very young child, growth is mainly dependent on _________, whilst during puberty it is dependent upon __________

Answer 4

In the very young child, growth is mainly dependent on nutrition, whilst during puberty it is dependent upon GHRH secretion

Question 5

What is the median age for

a) Girls to enter puberty
b) Boys to enter puberty

Answer 5

a) 11 years
b) 11.5 years

Question 6

What is thelarche?

Answer 6

Beginning of breast development

Question 7

What is adrenarche?

Answer 7

Beginning of body hair growth and odour

Question 8

How is precocious puberty defined in

a) Females
b) Males

Answer 8

a) Breast development < 8 years
b) Entering puberty < 9 years

Question 9

Why does obesity lead to earlier puberty?

Answer 9

Increased fat cells increases the amount of leptin

Leptin can initiate puberty sooner