SB7c Menstrual Cycle Flashcards
average length of menstrual cycle and day of ovulation?
28 days
day 14 ovulation
when does puberty start on average?
12 years old
what does the menstrual cycle do?
prepare body for fertilisation of an egg and pregnancy
ovulation?
egg is released from the ovary
what happens during menstruation?
lining of uterus is shed during a period to remove the unfertilised egg
what happens during sexual intercourse?
sperm is deposited at the top of the vagina and passes through the cervix to the uterus to the oviducts where fertilisation takes place
what does contraception prevent?
fertilisation
examples of contraception and what type it is?
~male condom, barrier
~diaphragm or cap, barrier
~hormone pill or implant, hormonal
how does the male condom prevent fertilisation and success rate?
placed over erect penis, prevents sperm entering vagina (98% success)
how does the diaphragm or cap prevent fertilisation and success rate?
placed over cervix, prevents sperm entering the uterus (92-96% success)
how does the hormone pill or implant prevent fertilisation and success rate?
release hormones to prevent ovulation and thickens mucus at the cervix, making it difficult for sperm cells to pass through (>99% success)
advantages and disadvantages of barrier methods
adv- high success rate, prevent STIs
dis- not 100%. people may be allergic to material (rubber)
advantages and disadvantages of hormonal methods?
adv- extremely effective
dis- don’t prevent STIs, may cause side effects