Ch 45: Reproductive Sequence for the MCAT: Help and Review

About This Chapter

The reproductive sequence chapter of this MCAT Help and Review course is the simplest way to master the reproductive sequence. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of the reproductive sequence.

Who's it for?

Anyone who needs help learning or mastering MCAT material will benefit from taking this course. You will be able to grasp the subject matter faster, retain critical knowledge longer and earn higher scores. You're in the right place if you:

  • Have fallen behind in understanding developmental stages from fertilization to delivery
  • Need an efficient way to learn about the reproductive sequence
  • Learn best with engaging auditory and visual tools
  • Struggle with learning disabilities or learning differences, including autism and ADHD
  • Experience difficulty understanding your teachers
  • Missed class time and need to catch up
  • Can't access extra MCAT review resources at school

How it works:

  • Start at the beginning, or identify the topics that you need help with.
  • Watch and learn from fun videos, reviewing as needed.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Submit questions to one of our instructors for personalized support if you need extra help.
  • Verify you're ready by completing the Reproductive Sequence for the MCAT chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the Reproductive Sequence for the MCAT chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any reproductive sequence question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

In this chapter, you'll learn the answer to questions including:

  • What are they steps in fertilization and zygote formation?
  • What occurs during oocyte activation and cell cleavage?
  • What are the early stages of embryonic development?
  • How do embryos implant and placentas form?
  • What are the functions of amniotic fluid, the amnion and the yolk sac?
  • What are the ectoderm, endoderm and mesoderm?
  • How do external genitals develop in males and females?
  • What is the timeline for fetal development in the first trimester?
  • How does the fetus grow in the second trimester?
  • What development occurs during the third trimester?
  • What are the three stages of labor?
  • What role do hormones play in labor and delivery?
  • How is a C-section performed?

14 Lessons in Chapter 45: Reproductive Sequence for the MCAT: Help and Review
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

Fertilization is a process that occurs when a female's egg and a male's sperm are fused. Learn about the steps of fertilization and zygote formation. Also, understand all the main components to the fertilization process like gametes and oocytes.

Fertilization: Oocyte Activation & Cell Cleavage

2. Fertilization: Oocyte Activation & Cell Cleavage

The process of fertilization occurs when the sperm cell successfully joins with an egg cell, triggering oocyte activation and starting the nine-month process of cell cleavage. Learn about the cells involved in sexual reproduction and understand the process of fertilization and zygote development.

Early Embryonic Development: The Morula and Blastula

3. Early Embryonic Development: The Morula and Blastula

Following fertilization, the early stages of mammalian development--including cleavage, morula formation and blastula formation--are unique to mammalian embryos. Learn about key processes in each stage of development and how they differ from those in non-mammalian development.

Embryo Implantation and Placenta Formation

4. Embryo Implantation and Placenta Formation

All mammals begin as fertilized embryos. Learn what happens to a mammalian embryo when it is fertilized, understand how implantation occurs, and explore how the placenta forms.

The Placenta and the Fetus: Structure and Function

5. The Placenta and the Fetus: Structure and Function

Babies must eat but also discharge wastes into the mother's blood, for which the placenta can be considered the interface. Explore the structure and function of the placenta and how it facilitates the transfer of nutrients and waste products between mother and baby.

Amniotic Fluid, The Amnion, and the Yolk Sac

6. Amniotic Fluid, The Amnion, and the Yolk Sac

Living organisms need a support system as they grow from an embryo into a newborn. Learn how amniotic fluid, the amnion, yolk sac, chorion, and allantois function in placental mammals and egg-laying vertebrates to nourish and protect the unborn as they develop.

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

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

Gastrulation is a process that creates three different germ layers in an early embryo called ectoderm, endoderm, and mesoderm. Learn what this process is and discover how it occurs in the gastrulation of frogs and mammals.

External Genital Development in Males and Females

8. External Genital Development in Males and Females

The external genitalia of males and females develop very differently, even though they begin as identical tissue sets. Learn about external genital development in males and females, and understand the importance of testosterone and DHT. Explore the process of genital development, including the time required, and recognize how sexual differentiation occurs.

Fetal Development in the First Trimester: Stages & Timeline

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

Fetal development in the first trimester occurs in stages with new organs forming about every four weeks. Explore the first trimester timeline and learn about embryogenesis, cell differentiation, organogenesis, and the growth progression of an embryo.

Second Trimester Fetal Development

10. Second Trimester Fetal Development

The second trimester of fetal development includes months four to six as the fetus grows. Review the first trimester and explore how the fetus develops in size, movement, organs, and systems during the second trimester timeline.

Third Trimester Fetal Development

11. Third Trimester Fetal Development

In the last three months of gestation mark periods of rapid growth for fetuses as their organs and senses mature and refine. Explore the third trimester of fetal development: the seventh, eighth and ninth months of pregnancy.

The Three Stages of Labor: Dilation, Expulsion & Placental

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

The process of labor and delivery is divided into stages, with the end goal of parturition, or the forcible expulsion of the fetus from the mother's uterus. Learn more about the three stages of labor. including the dilation, expulsion, and placental stages.

Childbirth: The Role of Hormones in Labor and Delivery

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

During childbirth, hormones relay signals from the fetus to the mother to initiate labor. Learn about the process of labor and delivery (initiation, continuation, and end of labor), the role of hormones in childbirth, and the function of positive feedback loop.

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

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

A Cesarean section (commonly known as a C-section) is a surgical procedure to deliver a baby through an incision in the mother's abdomen and uterus. Learn more about some of the reasons for C-sections, the types and steps of C-section deliveries, and the possible risks involved in each.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 220 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Other Chapters

Other chapters within the MCAT Prep: Help and Review course

Support