reproductive hormones. male gonads (testes) produce sperm. female gonads (ovaries) produce eggs
TRANSCRIPT
Reproductive Hormones
Reproductive Hormones
Male gonads (testes) produce sperm.
Female gonads (ovaries) produce eggs.
Male Reproductive System
Sex hormones: androsterone & testosterone. Function:
Stimulates spermatogenesis.Stimulates secondary sex characteristics. Increases secretion of body oils. Increases sex drive.
Male Reproductive System
Female Reproductive System
Sex hormones:
Estrogen & Progesterone
Female Reproductive System
Ovaries contain cells called follicles. Follicles consist of:
Primary oocyte. Granulosa cells.
Oogenesis
FSH & LH released. Primary oocyte undergoes meiosis I.
Forms a secondary oocyte and a polar body.
Granulosa cells divide.Forms a fluid-filled cavity (antrum) around the
secondary oocyte.Serves as nutrition for oocyte.
Ovulation
Secondary oocyte ruptures ovarian wall.Enters the fallopian tubes.
Remaining follicle cells form the corpus luteum.Secretes estrogen and progesterone.
Oogenesis & Ovulation
Meiosis II is Dependent on Fertilization
No fertilization?Corpus luteum degenerates and leaves a scar
(corpus albicans).
Fertilization?Meiosis II occurs.Secondary oocyte divides to form a fertilized
egg/ovum (zygote) & a polar body.
Female Reproductive
System
Menstrual Cycle
4 phases:Flow (day 0 – 5).Follicular (day 6 – 13).Ovulatory (day 14).Luteal (day 15 – 28).
Menstrual Cycle
*Males and females both have male and female sex hormones, but in varying
levels.