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 embryonic germ layer forms the linings of the respiratory and digestive tracts?

Mesoderm

Periderm

Endoderm

Ectoderm

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Verified step by step guidance

Understand the concept of embryonic germ layers: During embryonic development, three primary germ layers form, which are the ectoderm, mesoderm, and endoderm. Each layer gives rise to specific tissues and organs in the body.

Identify the function of each germ layer: The ectoderm forms structures such as the skin and nervous system. The mesoderm forms muscles, bones, and the circulatory system. The endoderm forms internal linings and organs.

Focus on the endoderm: The endoderm is responsible for forming the linings of the respiratory and digestive tracts. It also contributes to the development of organs such as the liver and pancreas.

Eliminate incorrect options: The mesoderm and ectoderm do not form the linings of the respiratory and digestive tracts. The periderm is not a germ layer involved in this process.

Conclude with the correct answer: Based on the functions of the germ layers, the endoderm is the correct answer for forming the linings of the respiratory and digestive tracts.