when would levels of GnRH be higher? in normal or castrated adult male?
castrated male would be higher
function of sertoli cells of seminiferous tubules?
maintain blood testis barrier
support spermiogenesis
secrete inhibin and androgen-binding protien
what muscles contract to result in ejaculation?
ischiocavernousus muscle
bulbocavernosus muscle
when is FSH greater? secretory phase of uterine cycle or postmenopause?
postmenopausal woman
normal mature human spermatozoa contain how many chromosomes?
23 chromosomes only (NOT PAIRS)
extensive mesentary that encloses ovaries, uterine tubes and uterus?
broad ligament
where sperm production occurs?
seminiferous tubules
what must happen for erection and ejaculation to occur?
sufficient blood hydrostatic pressure
parasympathetic and sympathetic branches of NS functioning
urinary sphincters must open
how many chromosomes do somatic cells contain?
23 pairs AND 46 total chromosomes
what is greater, primordial follicles at birth or puberty?
greater at birth
structures that transport ovum to uterus?
uterine tube
what happens with hormones at puberty in both sexes
FSH increases
LH decrease
segment of uterine tube that connects to uterine wall?
isthmus
in males what causes testosterone production?
LH
organ to provide mechanical protection and nutritional support for developing embryo?
uterus
as sperm cells develop and go through meiosis they then become what ?
spermatocytes
which is greater, cellular metabolism when progesterone is high or low?
progesterone levels are HIGH
what portion of uterus is the inferior portion that exteends from isthmus to vagina
body
what structures manufacture products that become part of semen?
seminiferous tubules
bulbourethral glands
seminal vesicles
prostate gland
inferior portion of uterus the projects into vagina
cervix
cells formed at end of meiosis?
spermatids
ovarian follicles are found where?
cortex
muscle layer of uterus
myometrium
which structure contains major blood vessels of ovary?
suspensory ligament
process of egg formation?
oogenesis
what region of ovary do follicles develop?
cortex
membrane partially covering vaginal orifice?
hymen
what is the cell that is ovulated?
secondary oocyte
is oogonia diploid or haploid?
diploid
what structure in females are same as males foreskin?
prepuce
when is corpus luteum formed?
after ovulation
when primordial follicles form?
embryonic development
difference between follicular cells and granulosa cells?
follicular are in outermost layer where follicle is
granulosa cells are inner layer nearest oocyte
for a primary follicle, the stage oocyte is in when in meiosis?
prophase 1
stage of meiosis when oocyte goes through ovulation?
metaphase 2
when oocyte is expelled?
ovulation
how do ovarian arteries and viens get to ovary?
through suspensory ligament
what specific portion or region of uterine tube does fertilization occur?
ampulla
ligament that attaches ovary to posterior pelvic wall?
suspensory ligament
when oocyte finishes meiosis?
after fertilizatoin
when do primary follicles begin to develop?
after puberty
stage of meiosis graafinian cell is in?
metaphase 2
stage of meiosis that primary oocyte goes through?
prophase 1
what is polar body? when does it occur? why does it occur?
to conserve nutrients, cytoplasm segregates into oocyte or ovum, during meiosis 1 and 2. The remaining daughter cells generated from meiotic events contain little cytoplasm and eventually degenerate.
ligament that surrounds uterine tube?
broad ligament
List in order from oogonium to zygote?
oogonium
primary oocyte
secondary oocyte
first polar body
secondary oocyte
ovum
second polar body
zygote
zygote diploid or haploid?
diploid
waht type of oocyte is being expelled during ovulation
secondary oocyte
name of follicle that is ovulated?
graafian follicle
secondary follicle stage of meiosis for oocyte?
prophase 1
if woman can produce normal amt of milk but unable to deliver to infant what is damaged?
mammary duct
lactiferous sinus
lactiferous duct
lactiferous duct opening
during ovulation oocyte is in what stage of meiosis?