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1. Introduction to Anatomy & Physiology5h 42m
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 Heart2h 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

Placentation

Anatomy & Physiology

28. Human Development

Placentation

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Multiple Choice

The chorion is made up of the:

Syncytiotrophoblast and lacunae.

Ectoderm and syncytiotrophoblast.

Extraembryonic mesoderm and syncytiotrophoblast.

Extraembryonic endoderm and syncytiotrophoblast.

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Understand the structure and function of the chorion in embryonic development. The chorion is an important membrane that contributes to the formation of the placenta.

Identify the components that make up the chorion. The chorion consists of two main layers: the outer layer known as the syncytiotrophoblast and the inner layer known as the extraembryonic mesoderm.

Differentiate between the syncytiotrophoblast and other embryonic layers. The syncytiotrophoblast is a specialized layer of cells that invades the uterine lining to establish nutrient exchange.

Recognize the role of the extraembryonic mesoderm. This layer provides structural support and contributes to the formation of blood vessels within the developing placenta.

Review the options provided in the problem and match them with the correct components of the chorion. The correct answer is the combination of extraembryonic mesoderm and syncytiotrophoblast.