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

Implantation

Anatomy & Physiology

28. Human Development

Implantation

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Multiple Choice

How does the blastocyst become embedded in the uterine lining during implantation?

The blastocyst is pushed into the uterine lining by uterine contractions.

The blastocyst uses cilia to burrow into the uterine lining.

The blastocyst secretes enzymes that degrade the uterine lining, allowing it to embed.

The uterine lining engulfs the blastocyst through phagocytosis.

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Verified step by step guidance

Understand the structure of the blastocyst: The blastocyst is a structure formed in the early development of mammals. It possesses an outer layer called the trophoblast and an inner cell mass that will eventually form the embryo.

Recognize the role of the trophoblast: The trophoblast cells play a crucial role in implantation. They are responsible for interacting with the uterine lining and facilitating the embedding process.

Learn about enzyme secretion: The trophoblast cells secrete enzymes that degrade the extracellular matrix of the uterine lining. This enzymatic activity helps to break down the tissue, allowing the blastocyst to embed itself into the lining.

Consider the process of implantation: As the enzymes degrade the uterine lining, the blastocyst gradually embeds itself into the endometrium, the inner lining of the uterus. This process is essential for establishing a connection between the mother and the developing embryo.

Understand the significance of implantation: Successful implantation is critical for the continuation of pregnancy. It allows the blastocyst to access nutrients and oxygen from the mother's blood supply, which are necessary for its growth and development.