Puberty

Question 1

growth during puberty

Answer 1

• gain up to 50% of adult body weight
• gain muscle mass (more visible in boys)
• girls increase fat on arms/legs/trunk

Question 2

growth spurt timeline girls

Answer 2

ages 10 - 16

Question 3

growth spurt timeline boys

Answer 3

ages 12.5 - 18

Question 4

hypothalamus

Answer 4

• key regulatory center in brain
• slowly produces GnRH beginning in middle childhood
• increases GnRH production during pre-pubertal growth spurt (esp after reach 19% body fat)

Question 5

GnRH

Answer 5

aka gonadotropin-releasing hormone

• produced by hypothalamus
• stimulates pituitary gland to produce gonadotropins

Question 6

gonadotropins (2)

Answer 6

• FSH

- LH

Question 7

sex hormones

Answer 7

• androgens (testosterone) & estrogens

- presence in blood stream causes development of secondary sex characteristics

Question 8

menarche

Answer 8

• onset of mensturation

- occurs @ avg age of 12.5

Question 9

spermarche

Answer 9

• onset of sperm emission
• caused by androgens in blood stream
• occurs @ avg age of 13

Question 10

FSH

Answer 10

• aka follicle stimulating hormone
• stimulates maturation of ovarian follicles
• aids in sperm production

Question 11

LH

Answer 11

• aka luteinizing hormone

- triggers sex hormone production

Question 12

onset of breast dev

Answer 12

• caused by estrogen in bloodstream

- ages 8-13

Question 13

onset of testicular growth

Answer 13

• caused by testosterone in bloodstream

- ages 9.5-13.5