Ch 46: Campbell Biology Chapter 46: Animal Reproduction

About This Chapter

The Animal Reproduction chapter of this Campbell Biology: Online Textbook Help course helps students learn the essential biology lessons of animal reproduction. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Animal Reproduction textbook chapter.

How It Works:

  • Identify the lessons in Campbell Biology's Animal Reproduction chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the animal reproduction topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students Will Learn:

  • Animal reproduction and reproductive cycles
  • How animal sexual reproduction patterns vary
  • Animal fertilization internally and externally
  • Anatomy of the male and female reproductive system
  • Structures of the male HPG axis
  • Ovarian cycle and the female HPG axis
  • Phases of the uterine cycle
  • Processes of fertilization and zygote formation
  • Oocyte activation and cell cleavage
  • Steps involved in embryo implantation and placenta formation
  • Fetal development in the first, second, and third trimesters
  • Types of contraception methods
  • Causes of miscarriage and infertility
  • Methods of abortion

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19 Lessons in Chapter 46: Campbell Biology Chapter 46: Animal Reproduction
Test your knowledge with a 30-question chapter practice test
Asexual & Sexual Reproduction in Animals

1. Asexual & Sexual Reproduction in Animals

It's common knowledge that animals reproduce, and there are two main types of reproduction. Discover the differences between sexual and asexual reproduction and the processes of each.

Reproductive Cycles of Animals

2. Reproductive Cycles of Animals

Animals go through reproductive cycles, whereby their genetic code is passed to subsequent generations. Understand the 'circle of life' through concepts of cell division, maturation, meiosis and mitosis, and adulthood related to animal reproduction.

Variation in Patterns of Animal Sexual Reproduction

3. Variation in Patterns of Animal Sexual Reproduction

Explore the variation in patterns of animal sexual reproduction that have aided survival through evolution. Examine stereotypical reproduction, discover the role of hermaphroditism, and understand how sex reversal has emerged.

Internal & External Fertilization in the Animal Kingdom

4. Internal & External Fertilization in the Animal Kingdom

Explore how methods of internal and external fertilization are found throughout the animal kingdom. Review what fertilization is, examine internal and external fertilization, and discover the role of pheromones.

Male Reproductive System: Functions, Organs & Anatomy

5. Male Reproductive System: Functions, Organs & Anatomy

The male reproductive system includes various structures and pathways to transport sperm. Learn about the anatomy, organs, and functions of the male reproductive system.

Female Reproductive System: Internal Anatomy

6. Female Reproductive System: Internal Anatomy

The female reproductive system has multiple structures with specific purposes and functions. Learn about the internal anatomy of the female reproductive system, including the ovaries, cervix, uterine tubes, and uterus.

External Anatomy of the Female Reproductive System

7. External Anatomy of the Female Reproductive System

The external anatomy of the female reproductive system involves six main structures developed from the same tissues that make the male's external genitals. Learn about the skin folds in the vulva and explore the female erectile structures, including the clitoris and vestibular bulbs.

The HPG Axis: Hormones of Male Reproduction

8. The HPG Axis: Hormones of Male Reproduction

Male reproduction is controlled by hormones. Learn about this process, including how males change as they experience puberty. Explore the HPG Axis, the hypothalamus, the anterior pituitary, LH, FSH, gonads, testosterone, and inhibin.

HPG Axis: Hormonal Control of the Ovarian Cycle

9. HPG Axis: Hormonal Control of the Ovarian Cycle

The female HPG axis involves the hypothalamus, anterior pituitary and female gonads (or ovaries) and allows the brain to communicate with the ovaries using hormones. Explore the function of the HPG axis, GnRH patterns, LH and FSH hormones, and HPG signaling.

The Uterine Cycle: Phases and Endometrial Changes

10. The Uterine Cycle: Phases and Endometrial Changes

Hormonal changes trigger the phases the female reproduction system goes through over the course of about 28 days. Explore how the phases and endometrial changes specific to the uterine cycle prepare the female body for the implantation of a fertilized egg.

Fertilization and Zygote Formation: Definition and Processes

11. 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

12. 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.

Embryo Implantation and Placenta Formation

13. 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.

Fetal Development in the First Trimester: Stages & Timeline

14. 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

15. 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

16. 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.

Contraception Methods: Types & Examples

17. Contraception Methods: Types & Examples

Contraception, also known as birth control, refers to the act of preventing pregnancy. Learn about different types and examples of contraception methods, such as withdrawal, barrier, hormonal, and surgical methods, as well as abstinence.

Abortion and Miscarriage: Methods and Causes

18. Abortion and Miscarriage: Methods and Causes

There are many common misconceptions on the differences between abortion and miscarriage. Learn about what causes a miscarriage and the different types of abortions.

Infertility: Causes and Potential Options

19. Infertility: Causes and Potential Options

Infertility is the state of being unable to conceive or achieve a pregnancy. Learn about the definition, causes, and reasons of infertility in males and females, and explore treatment options available for this condition.

Chapter Practice Exam
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Practice Final Exam
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