Gynae Flashcards
(570 cards)
two processes that ensure only one sperm fertilizes eggs
zonal inhibiting proteins
membrane depolarisation
Zonal inhibiting proteins
cause the release of any other attached sperm and destroy the oocyte’s sperm receptors, thus preventing any more sperm from binding
Functionsoftheplacenta
protection, echanger, endocrine fx
hcg function during the beginning of pregnancy
promotes the maintenance of the corpus luteum
epoophoron
remnant of the mesonephric tubules that can be found next to the ovary and fallopian tube
paroophoron
remnant of the lower part of the mesonephros in the broad ligament between the epoophoron and the uterus
Gartner’s duct cyst
a benign vaginal cyst that originates from the Gartner’s duct, which is a vestigial remnant of the mesonephric duct (wolffian duct) in females
H-Y antigen
a male histocompatibility antigen that causes females to reject male skin grafts
Primary amenorrhea
the failure of menses to occur by age 16 years, in the presence of normal growth and secondary sexual characteristics
Secondary amenorrhea
defined as the cessation of menses sometime after menarche has occurred
Müllerian agenesis
a congenital malformation characterized by a failure of the Müllerian duct to develop
other names for Müllerian agenesis
Mayer–Rokitansky–Küster–Hauser syndrome (MRKH)
vaginal agenesis
menopause sx
Vaginal dryness Hot flashes Weight gain and slowed metabolism Thinning hair and dry skin Sleep problems
Asherman’s syndrome
an acquired uterine condition that occurs when scar tissue (adhesions) form inside the uterus and/or the cervix
what does oxytocin and prostaglandins do during parturition
cause uterine contractions
lung changes in pregnancy
decr: expiratory reserve volume
residual volume
functional residual capacity
total lung capacity
same: vital capacity
insp reserve volum
incr: tidal volume
insp capacity
dead volume
Polar bodies fx
to eliminate one half of the diploid chromosome set produced by meiotic division in the egg, leaving behind a haploid cell
sinual tubercle gives rise to (M & F)
M: seminal colliculus.
F: vaginal plate and hymen
granulosa cells
production of steroids and LH receptors
thecal cells
produce androgens
what are oestrogens are bound to
albumin and sex hormone-binding globulin
what are progesterones are bound to
albumin & transcortin
oestrogen fx
Stimulate proliferation of epithelial cells of uterine tubes, uterus & vagina
Reduce membrane potential of myometrial muscle fibres
Stimulate duct growth in mammary glands
progesterone fx
incr membrane potential of myometrial muscle fibres
Stimulates alveolar formation in breasts
Antagonises action of aldosterone on kidney