HUMAN REPRODUCTION © 2016 Paul Billiet ODWS

Male urinogenital system Ureter Bladder Seminal vesicle Sperm duct / Vas deferense Prostate gland Cowper’s gland Epididymis Testis Scrotum Penis Urethra © 2016 Paul Billiet ODWS

Male system side view Bladder Prostate gland Ureter Penis Seminal vesicle Urethra Cowper’s gland Vas deferense Testis Epididymis Scrotum © 2016 Paul Billiet ODWS

The testis low power © 2016 Paul Billiet ODWS LS Human testis

Seminiferous tubules viewed x40 Interstitial cells © 2016 Paul Billiet ODWS

Seminiferous tubules viewed x400 Spermatozoa Developing sperm cells © 2016 Paul Billiet ODWS

Seminiferous tubules x400 Sperm heads Sertoli cells © 2016 Paul Billiet ODWS

Intersitial tissue viewed x400 Capillary © 2016 Paul Billiet ODWS

The female urinogenital system Oviduct/Fallopian tube R. Ovary L. Ovary Uterus Cervix Ureter Bladder Vagina Urethra © 2016 Paul Billiet ODWS

Female system side view Ovary Fallopian tube Uterus Cervix Pubic bone Urethra Bladder Vagina Clitoris © 2016 Paul Billiet ODWS

Ovary low power LS Cat Ovary © 2016 Paul Billiet ODWS

Ovary follicles viewed x100 © 2016 Paul Billiet ODWS

Primary follicles viewed x400 © 2016 Paul Billiet ODWS

Maturing follicles viewed x100 © 2016 Paul Billiet ODWS

Mature follicle viewed x100 Secondary oocyte © 2016 Paul Billiet ODWS

Mature follicle viewed x100 Follicular liquid © 2016 Paul Billiet ODWS

Near ovulation viewed x100 © 2016 Paul Billiet ODWS

Changes in the endometrium 0 7 14 21 28 Day of menstrual cycle © 2016 Paul Billiet ODWS

Ovarian activity during the cycle Maturing follicles Corpus luteum Ovulation 0 7 14 21 28 Day of menstrual cycle Follicular phase Luteal phase © 2016 Paul Billiet ODWS

Ovarian hormones Progesterone Oestrodiol 0 7 14 21 28 0 7 14 21 28 Day of menstrual cycle © 2016 Paul Billiet ODWS

Pituitary hormones Gonadotrophins Follicle Stimulating Hormone (FSH) Luteinising Hormone (LH) 0 7 14 21 28 Day of menstrual cycle © 2016 Paul Billiet ODWS