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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Which structure develops from an embryonic notochord?

Vertebral column

Lungs

Heart

Liver

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Verified step by step guidance

Understand the role of the notochord in embryonic development: The notochord is a flexible, rod-like structure that serves as a key signaling center during early development. It provides structural support and helps guide the formation of surrounding tissues.

Recognize the fate of the notochord: In vertebrates, the notochord is largely replaced by other structures as development progresses. Specifically, it contributes to the formation of the vertebral column, which encases and protects the spinal cord.

Eliminate incorrect options: The lungs, heart, and liver develop from different embryonic tissues. For example, the lungs arise from the endoderm, the heart from mesodermal tissue, and the liver from the endoderm. These structures are not directly influenced by the notochord.

Focus on the correct answer: The vertebral column develops from mesodermal tissue influenced by the notochord. The notochord itself is replaced by the nucleus pulposus of the intervertebral discs in adults, which is part of the vertebral column.

Conclude the reasoning: Based on embryonic development and tissue differentiation, the structure that develops from the embryonic notochord is the vertebral column.