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Reproductive Systems
BIO 105
Chapter 17
Reproductive System
In both sexes, the reproductive systems
consist of both primary reproductive organs (gonads) and accessory
structures
Functions of the testes
1. Gamete production
2. Hormone production
2
Testis anatomy Seminiferous
Tubules
SpermiogenesisHormone Production
3
The Scrotum & Temperature
RegulationDuct System & Accessory Glands
4
Penile erection, Erectile Dysfunction (ED),
and Viagra
Female Reproductive Anatomy
5
Gametogenesis (Oogenesis)
• Oogonia produced during fetal life
• Prior to birth, some oogonia enter Meiosis
and are now primary oocytes
• Primary oocytes become surrounded by a
layer of follicular cells
• Primary follicle = primary oocyte +
follicular cells
6
7
Menopause
Cessation of normal ovarian function
• Oocytes cease developing
• Hormone levels fall
• Ovulation stops
• Menstrual cycles stop
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