Reproductive system Flashcards
Anatomy
Gamete
Haploid cell
Male & Female gametes
spermatozoa and oocyte/ovum
where are gametes produced?
testes and ovaries
Normal fertilisation
ovum from ovary to ampulla of uterine tube
many spermatozoa from testes to vagina
Pelvic cavity anatomy
lies within bony pelvis
continuous with abdominal cavity
between pelvic inlet & pelvic outlet
Pelvic floor
internal wall of skeletal muscle that separates the pelvic cavity & perineum
Perineum
inferior to pelvic floor
situated between proximal parts of lower limbs
Peritoneal cavity
space between visceral & parietal cavity
Why does pelvic floor have openings?
So distal alimentary, reproductive & renal tract can pass through
Pelvic roof formed by…
parietal peritoneum
Parietal peritoneum
lining of abdominal cavity & firmly attached to walls.
Drapes over pelvic viscera
Peritoneal pouches
- rectouterine pouch (of Douglas)
- vesico-uterine pouch
Main & Accessory Female reproductive organs
Ovaries
Accessory: uterine tubes, uterus, vagina
Layes of uterus body
- Perimetrium -outer
- Myometrium -middle
- Endometrium -inner
Uterus position
Anteflexed: uterus tipped anteriorly relative to the axis of the cervix
Anteverted: uterus tipped anteriorly relative to the axis of the vagina
Ovaries
almond size and shape, loacted laterally in pelvic cavity.
Develop on posterior abdominal wall and move onto the lateral wall of the pelvis
ovaries secrete
oestrogen and progesterone in reponse to pituitary hormones
female pelvis arteries
- ovarian artery
- internal iliac artery
- uterine artery
What’s special about female pevis arteries?
Anastomosis between ovarian and uterine arteries
What does this anastomosis mean?
ovarian arteries mainly supply ovaries but also a bit of uterus and vice versa
What artery splits off in female?
common iliac artery
- external iliac artery
- internal iliac artery
internal iliac supplies
most of pelvis and perineum
Branches of iliac artery
uterine branch
(And vaginal artery is a branch of uterine artery usually)
Fertilisation & Menstruation
- Ova develops in ovaries
- Each menstrual cycle, 1 ovum is released from surface of ovary into peritoneal cavity.
- Ovum is gathered by fimbriae into infundibulum of uterine tube.
- moved along uterine tube by cilia
- During menstruation, unfertilised ovum is expelled by contractions of myometrium.
Where does
a) fertilisation
b) implantation
occur?
a) ampulla
b) body of uterus
Ectopic pregnancy
Fertilised ovum implants outwith uterine cavity
- Tubual pregnancy (97%)
- Abdominal pregnancy
(Potential emergency- danger of heamorrhage)
Female sterilisation
Tubual ligation
-both uterine tubes
-clipped, cut or cauterised
-blocks the lumen
Testes development
during development testes originate on the posterior wall of the abdominal cavity,
by birth they have descended into the scrotum
through the anterior abdominal wall