About This Chapter
Reproduction, literally, keeps live moving along. Without it, we just wouldn't be. While it may be one of those topics that cause pre-teens to giggle, reproduction really is fascinating. In these lessons, professional instructors will lead you through videos on topics, like embryonic organization and circulation, spermatogenesis, gastrulation and the extraembryonic membranes of vertebrates. You'll also learn:
- The roles of the morula and blastula in early embryonic development
- How the embryo implants and placenta forms
- The placenta and the fetus - structure and function
- The importance and function of amniotic fluid, the amnion and the yolk sac
- The three germ layers - ectoderm, endoderm and mesoderm
- The structure and function of the placenta and the fetus
|Overview of Animal Reproduction and Development||Learn important vocabulary and concepts related to animal reproduction, such as gametogenesis, gametes, asexual reproduction and organogenesis.|
|Spermatogenesis: How the Male Reproductive System Produces Sperm||Discover the process that occurs when sperm is produced, including vocabulary terms, such as germ cells, spermatocytes, spermatogonium and spermatids.|
|Early Embryonic Development: The Morula and Blastula||Explore the process of embryonic development.|
|Embryo Implantation and Placenta Formation||Discover concepts related to the implantation of an embryo and the development of placenta.|
|The Placenta and the Fetus: Structure and Function||Find out what roles the yolk sac and chorionic villi play in the function of the placenta and also learn more about how the fetus forms.|
|Amniotic Fluid, the Amnion, and the Yolk Sac||Examine the roles of the amnion and the yolk sac in the functioning of the amniotic fluid.|
|Gastrulation and the 3 Germ Layers||Analyze the ectoderm, endoderm and mesoderm.|
|Extraembryonic Membranes of Vertebrates||Learn about the functions of vertebrate extraembryonic membranes.|
|Embryonic Organization||Study embryonic organization.|
|Embryonic Circulation||Explore the circulation of an embryo.|
1. Overview of Animal Reproduction and Development
At this stage in life, you likely know where babies come from. However, did you know that some animals can make clones of themselves and reproduce sexually too? In this lesson, you'll learn more about sexual reproduction and early vertebrate development.
2. Spermatogenesis: How the Male Reproductive System Produces Sperm
In this lesson, you'll learn the series of steps necessary to produce a fully functional sperm cell. You'll also look at the structure of a sperm cell and see how it's equipped to venture forth into new territory.
3. Oogenesis: How the Female Reproductive System Produces Eggs
Did you know that a human female already has all of the oocytes that she will make in her entire life before she is even born? In this lesson, you'll learn how the human body produces an ovum through the process of oogenesis. You'll also learn how polar bodies help to ensure that female gametes are of high quality even though they are not produced in high quantities.
4. Early Embryonic Development: The Morula and Blastula
This lesson on the early stages of mammalian development covers the processes following fertilization, such as cleavage, the morula formation and blastula formation. Watch to learn what the inner cell mass, trophoblast cells and blastocyst are, as well as their functions within embryonic development.
5. Embryo Implantation and Placenta Formation
This lesson will cover the journey the mammalian embryo first makes after it has been fertilized. Learn how maternal blood moves through the embryo, and how the placenta is formed.
6. The Placenta and the Fetus: Structure and Function
Have you ever wondered how a baby eats before it's born or if babies go to the bathroom while still inside their mother? In this lesson, you will learn about the placenta and how it works to ensure a fetus stays well-nourished and healthy before birth.
7. Amniotic Fluid, The Amnion, and the Yolk Sac
From a chick developing inside an egg to a human baby growing in its mother's womb, all developing vertebrates rely on a support system to protect them, feed them, supply them with oxygen, remove wastes, and do much, much more to ensure that the embryo grows and develops into a fully functional organism. In this lesson, you'll learn about the different parts of that support system and some of the things that they do.
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Other chapters within the Science 101: Intro to Natural Sciences course
- Atomic Structure
- Fundamentals of Matter
- Introduction to Thermodynamics
- Mechanics of Physics
- Introduction to Relativity
- Fundamentals of Electricity
- Introduction to Magnetism
- Fundamentals of Waves, Sound and Light
- Space, The Solar System and the Universe
- Introduction to Atmospheric Science
- Geology Basics
- Introduction to Molecular Biology
- Cell Biology Fundamentals
- Introduction to Biochemistry
- Molecular Genetics Overview
- Cell Processes
- Plant Biology Foundations
- Human Anatomy Overview
- Fundamentals of Genetics
- Introduction to Ecology
- Basics of Evolution
- The Origin and History of Life On Earth
- Phylogeny and the Classification of Organisms
- Studying for Science 101