Female Reproductive Pathology Flashcards
What is contained in the cortex and medulla of the ovaries
Medulla - blood vessels and nerves
Cortex - developing follicles
Stages of follicle development
Primordial follicle
Early primary follicle
Late primary follicle
Secondary follicle
Tertiary/graffiti follicle
Corpus luteum
Corpus albicans
Atretic follicle
Where do primordial follicles develop
Fetal ovary in 1st 5 months gestation
Primordial follicle characteristics
Oocyte surrounded by single layer squamous follicular cells
Remain at first meiotic division until puberty
Early primordial follicle characteristics
Central oocyte surrounded by single layer cuboidal follicular cells
Limited number triggered to develop at start of each menstrual cycle by FSH
Late primary follicle characteristics
Zona granuloma forms
Zona pellucida enlarges
Zona pellucida
Thin hard band of glycoproteins that separates the oocyte and follicular cells, proteins on sperm bind to specific glycoproteins
How does the zona granuloma forms
Follicular cells proliferate into stratified epithelium
Secondary follicle characteristics
Follicular antrum in granuloma layer
Increased zona granuloma layers
Thicker zona pellucida
Larger oocyte
The cal cells outside follicle
What does the follicular antrum contain
Fluid containing Hylauronan and proteoglycans
What do thecal cells produce
Oestrogen
Tertiary/graffian follicle characteristics
2n haploid oocyte
Follicular antrum makes up most of follicle
Secondary oocyte located eccentrically
Zona pellucida and corona radiate
When does a follicle become tertiary/ graffian
After 1st meiotic division before ovulation
Corpus luteum characteristics
Formed from remaining cells of granuloma and Theda interna after release of ovum
Blood clot in centre
Granuloma lutein surrounds clot
Theca lutein cells outside granuloma lutein
Corpus albicans characteristics
Fibrous material Formed from involution of corpus luteum
How long does the corpus luteum stay active after ovulation before becoming the corpus albicans
14 days - LH levels fall
What happens when the corpus luteum involves
Secretory cells degenerate and are phagocytoses by macrophages and replaced by fibrous material
What happens to primordial follicles that are stimulated to develop during menstrual cycle but don’t complete development
Atresia - degenerate to atretic follicles
What happens during atresia of primordial follicles
Granuloma cells undergo apoptosis and replaced by fibrous material
Oocyte degenerates
Basement membrane becomes glassy membrane
What does the basement membrane separate in follicles
Oocyte and granuloma cells
What happens to all but 1 primordial follicle
Atresia
Segments of oviduct
Infundibulum
Ampulla
Isthmus
Pars interstitialis
How does mucosa change as oviduct gets closer to uterus
Mucosa folds become smaller
Smooth muscle increases
2 types of epithelium in the oviduct and their functions
Ciliated - move ovum
Non ciliated secretory/ peg cells - release secretions that lubricate, nourish, and protect ovum
Layers of uterus
Endometrium - mucosal
Myometrium - muscular
Perimetrium - serosal
2 layers of endometrium
Stratum functionalis
Stratum basalis
Which layer of the uterus responds to oxytocin
Myometrium
Which layer of the endometrium expands, vascularises, and is sloughed off during the menstrual cycle
Stratum functionalis
Stages of the uterine cycle
Proliferation stage
Secretory phase
Menstrual pahse
Proliferative phase of uterine cycle
Growth of epithelium in stratum functionalis
Coiled densely packed glands and spiral arteries formed
Which hormone drives the proliferative phase of the uterine cycle
Oestrogen
What do glands in the endometrium contain during the proliferative phase of the uterine cycle
Nothing