Human Reproduction

Outline Male Anatomy Female Anatomy Spermatogenesis Oogenesis Menstrual Cycle Fertilization Pregnancy and Childbirth

Male Organs and tissues testes, seminiferous tubules, epididymis, vas deferens, seminal vescicle, prostate gland Hormones testosterone, FSH, LH Spermatogenesis production of mature sperm by meiosis

Male Anatomy

Male Anatomy Epididymis Seminal Vesicle Prostate Gland Storage and maturation of spermatozoa Seminal Vesicle 60% of semen, high fructose content provides nourishment for sperm, alkaline Prostate Gland 25% of semen, high zinc content, alkaline, neutralizes acidic female tract

Epididymis

Testosterone Produced by cells in testes Embryonic secretion causes development of male sexual organs Secretion levels rise with onset of puberty Secondary sexual characteristics Pubic hair, growth of skeletal muscles, etc.

Structure of Testis

Sperm Production Termed spermatogenesis, a meiotic division Occurs in seminiferous tubules of testes Hormonal Control Follicle Stimulating Hormone (FSH) / pituitary Stimulates first division of meiosis (2n -> n) Testosterone / testes Stimulates second division of meiosis Leutenizing Hormone (LH) / pituitary Stimulates secretion of testosterone

Seminiferous Tubule

Spermatogenesis

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Female Organs and tissues ovary, oviduct, uterus, cervix, vagina Hormones estrogen, FSH, LH, progesterone, HCG, oxytocin Egg production – oogenesis Menstrual cycle Pregnancy, the placenta, and childbirth

Female Anatomy