Measurements and the Metric System
Measurements and the Metric SystemMeasurementUnitAbbreviationMetric EquivalentApproximate Standard EquivalentLengthnanometernm1 nm = 10−9 m· 1 mm = 0.039 inch· 1…
Organogenesis and Vertebrate Formation
Gastrulation leads to the formation of the three germ layers that give rise, during further…
Fertilization and Early Embryonic Development
The process in which an organism develops from a single-celled zygote to a multi-cellular organism…
Human Pregnancy and Birth
Pregnancy begins with the fertilization of an egg and continues through to the birth of…
The Ovarian Cycle and the Menstrual Cycle
The ovarian cycle governs the preparation of endocrine tissues and release of eggs, while the menstrual cycle governs…
Hormonal Control of Human Reproduction
The human male and female reproductive cycles are controlled by the interaction of hormones from…
Gametogenesis (Spermatogenesis and Oogenesis)
Gametogenesis, the production of sperm and eggs, takes place through the process of meiosis. During…
Female Reproductive Anatomy
A number of reproductive structures are exterior to the female’s body. These include the breasts…