CONTRACEPTION SEM2 Flashcards
what is the main difference between contraception and sterilisation
contraception is reversible, sterilisation is not
what is fecundity
measure of capacity to conceive and have a live birth
what is a vasectomy
the removal of a part of the vas deferens
what does the vasectomy prevent from occurring
blocks the passage of sperm from being released (sperm production does not cease)
what is tube ligation
ligation of oviduct using clip or removal of tube
what is the barrier method of contraception
methods that physically or chemically block sperm from reaching an egg
what do hormonal methods target in the body
exploit the hypothalamic pituitary axis to prevent ovulation or spermatogenesis
what are the 2 main types of oral contraceptives
-combined oral contraceptive pill
-progesterone only pill
what are the effects of the combined oral contraceptive pill
-progesterone suppresses ovulation through negative and anti-positive feedback
-progesterone suppresses sperm penetration by thickening cervical mucus
-progesterone alters endometrial receptivity
-primary mechanism of anovulation
what are the effects of the progesterone only pill
-low doses of progesterone
-effects cervical mucus in endometrium
what is the primary and secondary effects of the hormonal implant
1)inhibit ovulation
2)effects cervical mucus and endometrium