reproduction Flashcards
what is the trophic role of the sertoli cells
support sperm production
which cells secrete luminal fluid?
sertoli cells
which cells secrete androgen binding protein
sertoli cells
which cells are the site of immunosuppression in males
sertoli cells
what kind of cells are leydig cells
interstitial
what is the function of the scrotum
temperature regulation
when do secondary sex characteristics develop in men?
`puberty
is there testosteron in males during fetal and neonatal stages
yes
what is the anabolic function of androgens
protein synthesis in muscle
how many days from primary spermatocyte to spermatazoa
64
where does spermatogenesis occur?
seminferous tubule, sertoli cell spaces
how long for spermatid to spermatozoa and what is it called
spermiogenesis, 24 days
how long do sperm stay in lumen
20 days
how long do sperm stay in epididymis?
6-12 days
how do sperm move to the vas deferens
peristalisis
what does the prostate gland secrete
cirtrate and enzymes
what do bulbourethral cells do
secrete mucous
what do seminal vessels secrete
alkaline, fructose, enzymes, prostaglandins
what kind of feedback acts in erection formation
positive
how do parasympathetic nerves affect smooth muscle during erection?
dilation of smooth muscle
what does viagra affect
phosphodiesterase
what molecule is increased by parasympathetic action (relation to viagrs)
nitric oxide
what picks up the ova from the ovary
infundibulum and fimbriae
how long does it take an egg to reach uterus`
4 days
which layer of the uterus consists of smooth muscle
myometrium
what is the thickest layer of the uterus
myometrium
which layer of the uterus has glands
endometrium
what is a mature follicle called?
graafian
what is the name for an immature follicle
primordial
what makes the mitotic effect on granulosa cells to makec them grow?
FSH
what does estrogen do to progesterone receptors on uterine endometrial cells
activate
which cell makes antrum fluid
granulosa
which granulosa cells have LH receptors as well as FSH`
ones on mid to late follicle/ corpus luteum
which cells secrete inhibin?
granulosa
when is meiosis II completed?
after fertilization
are ovarian hormones requires for sex differentiation before birth
no
at what day does one follicle become dominant
day 7
when does corpus luteum degenerate
25-28
why does menstruation occur
lack of progesterone and estrogen from corpus luteum degeration
what kind of mucous thick of thin do cervical glands secrete during proliferative phase
thin
when is embryo called fetus
8 weeks
how many sperms make it to the uterine tubes
100
when is the zona pellicuda lost
blastocyte
what is the outer layer of blastocyte called
trophoblast
at what stage can a zygote reach the uterus
morula
what becomes the placenta
trophoblast
when is implantation
6-7 days after fertilization
how long until the placenta is functioning and heart is beating
5 weeks
how do progesterone and estrogen affect milk production
suppression
which cells secrte mullerian inhibting hormone
sertoli
what does DHT do
mascunization of external structures
what causes the development of internal male genitalia
T
what occurs with csais
mutaton of androgen receptor
5HT not recognized, no masunization of external strcutrs
T not reconized, no male internal genitalia
no female internal genitalia (MIH)
what causes congeital adrenal hyperplasia and what occurs
decreased cortisol, increased
