Ch 33: Reproductive Sequence

About This Chapter

Review the elements of the reproductive sequence to prepare for the MCAT exam. Video lessons and quizzes incorporate all of the elements of the reproductive sequence section in a simple and clear manner.

Reproductive Sequence - Chapter Summary

This chapter begins by teaching you the definitions and processes involved in fertilization and zygote formation. Video lessons continue educating you on topics that include:

  • The three stages of labor (dilation, expulsion and placental)
  • Cell cleavage and oocyte activation
  • The structure and function of the fetus and placenta
  • Yolk sac, amniotic fluid and amnion
  • Fetal development
  • Childbirth

You will end this chapter by learning about C-sections and other types of delivery methods. The chapter delivers content through short video lessons that are easy to digest. We bundle our video lessons with supplementary quizzes that allow you to identify your strengths and weaknesses. You can also use your quiz results to decide if you're ready to correctly answer reproductive sequence questions when sitting for the MCAT's biological sciences section.

Reproductive Sequence Objectives

According to the MCAT's reproductive sequence test objectives, you must be familiar with various concepts regarding:

  • The reproductive system
  • Embryogenesis
  • Developmental mechanisms

On top of sitting for the biological sciences section and an optional trial section, you must also answer questions on verbal reasoning and physical sciences sections. On the biological sciences section, you have a total of 70 minutes to answer 52 multiple-choice questions. You can expect to answer questions based on seven sets of reading passages, as well as 13 individual questions. There are roughly four to seven questions that follow each reading passage.

14 Lessons in Chapter 33: Reproductive Sequence
Test your knowledge with a 30-question chapter practice test
Fertilization and Zygote Formation: Definition and Processes

1. Fertilization and Zygote Formation: Definition and Processes

Follow the male's sperm and the female's egg on their way to meet each other in this lesson that takes you through the process of fertilization in humans. Learn about the obstacles the sperm must get through before it can fertilize the egg.

Fertilization: Oocyte Activation & Cell Cleavage

2. Fertilization: Oocyte Activation & Cell Cleavage

When is the exact moment of fertilization? Learn the answer in this lesson. We'll look at what happens after the sperm penetrates the outer layers of the oocyte during the process of fertilization.

Early Embryonic Development: The Morula and Blastula

3. 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.

Embryo Implantation and Placenta Formation

4. 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.

The Placenta and the Fetus: Structure and Function

5. 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.

Amniotic Fluid, The Amnion, and the Yolk Sac

6. 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.

Gastrulation and the 3 Germ Layers (Ectoderm, Endoderm & Mesoderm)

7. Gastrulation and the 3 Germ Layers (Ectoderm, Endoderm & Mesoderm)

Gastrulation is a key process in embryonic development - it's how a simple ball of cells begins to grow into a fully functioning being! Watch this lesson to learn about a key process in the development of almost all multicellular organisms.

External Genital Development in Males and Females

8. External Genital Development in Males and Females

The developed genitals of a male look much different than the developed genitals of a female. However, they both grow from identical sets of tissues. Learn more about external genital development and find out how and when the tissue changes.

Fetal Development in the First Trimester: Stages & Timeline

9. Fetal Development in the First Trimester: Stages & Timeline

We all know it takes 9 months for the baby to develop inside the mother's womb, but have you ever thought about how or when all those different organs and systems appear? When does the fetal heart start beating or the brain develop? Find out in this lesson covering the first trimester of pre-natal development.

Second Trimester Fetal Development

10. Second Trimester Fetal Development

The growth and development of a baby is an amazingly detailed and complex process. It starts with a ball of cells, which grows all the way to a full grown, eight pound baby in nine months! In this lesson, learn about what happens during the second trimester of pregnancy.

Third Trimester Fetal Development

11. Third Trimester Fetal Development

This is it - the last step, the last few months before the birth of a baby! Learn about the changes the developing fetus goes through during the third and final trimester.

The Three Stages of Labor: Dilation, Expulsion & Placental

12. The Three Stages of Labor: Dilation, Expulsion & Placental

You may think of the process of labor and childbirth as one long event, but it is actually divided into different stages. Learn about each of the three stages of labor in this lesson.

Childbirth: The Role of Hormones in Labor and Delivery

13. Childbirth: The Role of Hormones in Labor and Delivery

How does a mother's body know when it is time to give birth? How does the labor process begin and end? Learn the answers to these questions in this lesson on the hormones involved in childbirth.

What is a C-Section? - Procedure, Types & Delivery

14. What is a C-Section? - Procedure, Types & Delivery

Do you know what happens when something goes wrong during the birthing process? You may have heard about C-sections, but do you know why they are performed - or how? Learn about this and more in this lesson on Cesarean sections.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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