Embryos - Female Reproductive System Flashcards
Sagittal view of pelvic region
Rectouterine pouch = pouch of douglas
Sagittal view of ovary
Structure of ovary
What does the mesovarium do
Supports and stabilises the ovary
What does each ovarian follicle contain
An egg cell
Overview of oogenesis
All oogonia have formed before birth
What is the difference between oogenesis and spermatogenesis
Daughter cells are different sizes in oogenesis
4 steps in ovarian cycle
- Formation of primary, secondary and tertiary follicles
- Ovulation
- Formation and degradation of the corpus luteum
- Degradation of corpus luteum
What is corpus algitans
Leftover scar tissue of the ovarian cycle
Ovarian cycle I
Ovarian cycle II
Describe the structure of the uterine tubes
INFUNDIBULUM - end closest to the ovary with numerous fimbriae
AMPULLA - middle portion: fertilisation occurs in ampulla of the uterine tube - 12 -24 hrs after ovulation
ISTHMUS - a short segment connected to the uterine wall
Functions of uterus
A muscular organ that provides mechanical protection, nutritional support and waste removal for the developing embryo and foetus
How is the uterus supported
By the broad ligament and 3 pairs of suspensory ligaments
Overview of uterus
Posterior view of uterus and associated structures
Myometrium
Outer muscular layer
Endometrium
A thin inner glandular mucosa
Perimetrium
Incomplete serosa
The 4 sublayers of the endometrium
Blood supply to uterus, ovaries and vagina
Menses of uterine/menstrual cycle
Degeneration of endometrium
Menses
Proliferative phase of uterine/menstrual cycle
Restoration of the endometrium
Secretory phase of uterine/menstrual cycle
Endometrial glands enlarge and accelerate their rates of secretion
Menstrual cycle graph
Histological images of the uterine cavity during the menstrual cycle
What are the different positions the uterus can be in in relation to the bladder
What sort of epithelium lines the vagina
Stratified squamous non-keratinised epithelium
How is the vagina different from the oesophagus in terms of its epithelium
Superficial cells are full of glycogen
Breakdown of living cells on surface means glycogen spills onto surface of the vagina, which is foodstuff for symbiotic bacteria
Waste products produce acidic pH and inhibit growth of fungal pathogens
Female external genitalia
Path of egg to uterus
Luminar epithelium
What the embryo sees at the time of implant
Glandular epithelium
