puberty Flashcards
1
Q
puberty
A
- physical changes
- psychological changes
- development of secondary sex characteristics
- becoming capable of reproduction
- adolescence
2
Q
how does puberty start?
A
- stimulation of pituitary gland from hypothalamus
- gonadotropins
- males : ICSH
- females : FSH
- testosterone, oestrogen initiate changes (primary sex characteristics)
3
Q
what are the physical changes during puberty in girls?
A
- breast development
- growth of pubic hair
- increased uterus size
- widening of pelvis (hips)
- deposition of fat on hips
- start of menstrual cycle
- first menstrual bleeding
- ovulation
- growth spurt
- acne
4
Q
what are the physical changes during puberty in boys?
A
- enlargement of testis and penis
- pubic hair growth
- increase larynx size
- enlargement of skeletal muscles
- sperm production
- growth spurt
- acne
5
Q
distinctive human sexual activities
A
- males are sexually fertile unlike most mammal species
- menstruation is unique to humans
- mating not confined to periods of ovulation, can be used as pair-bonding
6
Q
life cycle of humans
A
- fertilisation
- zygote
- mitosis
- mitosis
- meiosis
- gametes
