FEMALE REPRODUCTIVE SYSTEM

FEMALE REPRODUCTIVE SYSTEM: 

FEMALE REPRODUCTIVE SYSTEM

THE MENSTRUAL CYCLE: 

THE MENSTRUAL CYCLE The regular, periodic changes that occur in the female reproductive system Notoriously variable duration Average duration: 28 days Counted from the 1 st day of menstruation (vaginal bleeding that occurs with the shedding of uterine mucosa) to the next.

THE OVARIAN CYCLE: 

THE OVARIAN CYCLE Follicular phase Ovulation Luteal phase 15 to 20 antral follicles are recruited to grow and one of them is selected as the dominant follicle to grow until ovulation Formation of the corpus luteum and secretion of hormones Expulsion of the cumulus- oocyte complex out of the ovary

OVARIAN CYCLE: 

OVARIAN CYCLE

ADULT OVARY SHOWING DIFFERENT STAGES OF FOLLICULAR GROWTH: 

ADULT OVARY SHOWING DIFFERENT STAGES OF FOLLICULAR GROWTH

STAGES OF FOLLICULAR GROWTH & DEVELOPMENT: 

DOMINANT FOLLICLE STAGES OF FOLLICULAR GROWTH & DEVELOPMENT PRIMORDIAL FOLLICLE A primary oocyte A single layer of flattened follicle cells PRIMARY FOLLICLE A primary oocyte with zona pellucida A single layer of cuboidal granulosa cells SECONDARY FOLLICLE A primary oocyte with ZP Stratifed cuboidal granuLosa cells Thecal cells ANTRAL/ TERTIARY FOLLICLE Antrum Cumulus oophorus and stratum granulosum ASD ASD E I-B FSH ASD E

Slide 9: 

STEROIDOGENESIS IN THE DOMINANT FOLLICLE THECAL CELL GRANULOSA CELL ASD T E LH RECEPTOR C ASD LH FSH RECEPTOR FSH + LH E

OVULATION: 

OVULATION Brought on by the LH surge Rupture of dominant follicle (LH-induced hydrolytic enzymes) Ovulation Vascularization of granulosa Formation of corpus luteum

LUTEAL PHASE CORPUS LUTEUM: 

LUTEAL PHASE CORPUS LUTEUM Corpus haemorrhagicum Corpus luteum Corpus albicans

UTERINE CYCLE: 

UTERINE CYCLE

CERVICAL CHANGES: 

CERVICAL CHANGES Cervical mucus changes in consistency during the menstrual cycle. Thin, clear and alkaline Thick, tenacious & celllular FOLLICULAR PHASE LUTEAL PHASE

THANK YOU: 

THANK YOU