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

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 structures of an embryo are derived from the ectoderm?

Muscular system

Circulatory system

Digestive tract lining

Nervous system

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Understand the three primary germ layers in embryonic development: ectoderm, mesoderm, and endoderm. Each layer gives rise to specific structures and systems in the body.

Identify the structures derived from the ectoderm. The ectoderm is the outermost layer and primarily forms structures such as the nervous system, skin, and sensory organs.

Recognize that the nervous system, including the brain and spinal cord, is a key structure derived from the ectoderm.

Differentiate between the germ layers: the mesoderm forms structures like the muscular and circulatory systems, while the endoderm forms the lining of the digestive tract.

Apply this knowledge to the problem: the muscular system, circulatory system, and digestive tract lining are not derived from the ectoderm, but the nervous system is.