Reproduction
Chapter 46
Reproductive System
Sexual behavior in parthenogenetic lizards
(a)
The release of eggs and external fertilization
Sea urchin sperm fertilizing an egg
Parental care in an invertebrate
Male Reproductive System
Male Reproductive System
Seminiferous Tubules & Sperm
Structure of Sperm
Hormonal control of the testes
Female Reproductive System
Female Reproductive System
Eggs mature in the ovaries: Each egg within a follicle
More Oogenesis & Follicles
Ovulation: Release of a mature egg into Fallopial tube
Female Reproductive Cycle
Sperm Fertilizing Egg
Formation of the zygote and early postfertilization events
Placental circulation
Human Fetal Development
• 1st Trimester – Early organ development
• 2nd Trimester – Organ development
• 3rd Trimester – Growth
Hormonal Induction of Labor
Three Stages of Labor