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

Embryonic Development (Weeks 3-8)

Anatomy & Physiology

28. Human Development

Embryonic Development (Weeks 3-8)

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Multiple Choice

Which of the following occurs during the embryonic period?

Development of the fetal heartbeat

Rapid growth and weight gain

Formation of the primary germ layers

Completion of organogenesis

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Verified step by step guidance

Understand the timeline of prenatal development: The embryonic period occurs from fertilization to the end of the eighth week of pregnancy. This is a critical phase where foundational structures are formed.

Identify key processes during the embryonic period: The formation of the primary germ layers is a significant event. These layers are the ectoderm, mesoderm, and endoderm, which give rise to all tissues and organs.

Differentiate between embryonic and fetal periods: The fetal period follows the embryonic period, starting from the ninth week until birth. It is characterized by growth and maturation of already formed structures.

Recognize the significance of organogenesis: Organogenesis, the formation of organs, begins during the embryonic period but is not completed until later stages. The primary germ layers are crucial for this process.

Clarify misconceptions: Rapid growth and weight gain are features of the fetal period, not the embryonic period. The fetal heartbeat begins early in the fetal period, not during the embryonic period.