Puberty

Question 1

When does the growth spurt of puberty take place?

Answer 1

10. 5-13 years in girls

12. 5-15 years in boys

Question 2

During puberty the brain becomes less responsive to negative feedback loops involving oestrogen and testosterone. T/F?

Answer 2

True

Question 3

What hormone is required for normal childhood growth?

Answer 3

Thyroid hormone

Question 4

In puberty, what hormones stimulate hair growth (particularly in the axilla)?

Answer 4

Androgens

Question 5

Where are androgens secreted from?

Answer 5

Adrenal gland

Question 6

What is the effect of increased levels of gonadotrophin releasing hormone in boys during puberty?

Answer 6

Increased secretion of gonadotrophins which stimulates the seminiferous tubules to secrete testosterone

Question 7

What is the name of the first menstrual cycle?

Answer 7

Menarche

Question 8

What hormone is responsible for growth and development of the breasts and ovaries, fat redistribution to the breasts and hips and bone maturation during puberty in girls?

Answer 8

Oestradial

Question 9

Describe stage one of the tanner staging of puberty

Answer 9

No pubertal development

Question 10

Describe stage two of the tanner staging of puberty

Answer 10

Increase in testicular volume and thinning of scrotum
Formation of breasts buds and areola widening
First signs of pubic hair (on base of penis and scrotum or on the labia majora)

Question 11

Describe stage three of the tanner staging of puberty

Answer 11

Penis enlargement to around 6cm
Breasts become elevated
Pubic hair becomes thicker and curlier

Question 12

Describe stage four of the tanner staging of puberty

Answer 12

Scrotum enlargement and darkening, penis increases in length to approximately 10cm
Breasts increase in size and elevation, areola and papilla forma secondary mound which projects from the contour of the breast
Pubic hair becomes adult-like and extends across pubis

Question 13

Describe stage five of the tanner staging of puberty

Answer 13

Testicular volume reaches final volume of approximately 20ml and penis increase to approximately 15cm in length
Breasts reach final adult size and areola returns to contour of surrounding breast with projecting central papilla
Pubic hair extends to medial surface of the thighs

Question 14

What tanner stages do each of the puberty lines on a growth chart represent?

Answer 14

Line one is tanner stage one
Line two is tanner stages two and three
Line three is tanner stages four and five

Question 15

Puberty which occurs below what age warrant clinical investigation?

Answer 15

6/7 in girls

8/9 in boys

Question 16

What test is used to assess bone age when delayed puberty is suspected?

Answer 16

A non Dominant wrist radiograph

Question 17

What bone disease can be a consequence of delayed puberty?

Answer 17

Osteoporosis