Table of contents

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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

Early Embryonic Development

Anatomy & Physiology

28. Human Development

Early Embryonic Development

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Multiple Choice

What is the correct sequence of embryonic stages during early development?

Gastrula, Blastula, Morula, Zygote

Zygote, Morula, Blastula, Gastrula

Blastula, Zygote, Morula, Gastrula

Morula, Zygote, Gastrula, Blastula

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Begin by understanding the process of embryonic development, which starts with fertilization.

The first stage is the formation of the zygote, which occurs immediately after fertilization when the sperm and egg combine.

Next, the zygote undergoes a series of rapid cell divisions known as cleavage, leading to the formation of a solid ball of cells called the morula.

Following the morula stage, the cells continue to divide and form a hollow structure known as the blastula, characterized by a fluid-filled cavity called the blastocoel.

Finally, the blastula undergoes gastrulation, a process where cells begin to differentiate and form the three primary germ layers, resulting in the gastrula stage.