Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

28. Human Development

Introduction to Human Development

Anatomy & Physiology

28. Human Development

Introduction to Human Development

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Multiple Choice

Which of the following lists the stages or structures of prenatal development in the correct order?

Zygote, embryo, fetus

Embryo, zygote, fetus

Zygote, fetus, embryo

Fetus, embryo, zygote

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Verified step by step guidance

Understand the stages of prenatal development: Prenatal development is divided into three main stages—zygote, embryo, and fetus. Each stage represents a specific phase of growth and differentiation in the development of a human organism.

Define the zygote stage: The zygote is the single-celled organism formed immediately after fertilization when the sperm and egg combine. This stage lasts for about the first two weeks and includes rapid cell division and implantation into the uterine wall.

Define the embryo stage: The embryo stage begins after the zygote has implanted into the uterine wall. This stage lasts from approximately the third week to the eighth week of development. During this time, major organs and structures begin to form.

Define the fetus stage: The fetus stage starts at the ninth week of development and continues until birth. During this stage, the organism undergoes significant growth and maturation of organs and systems.

Compare the options provided: Based on the definitions of the stages, the correct chronological order of prenatal development is zygote, embryo, fetus. This sequence reflects the natural progression of development from fertilization to birth.