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Which of the following events does not occur after implantation?
- a)Appearance of germinal layers
- b)Formation of chorionic villi
- c)Secretion of HCG
- d)Formation of trophoblast and inner cell mass
Correct answer is option 'D'. Can you explain this answer?
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Which of the following events does not occur after implantation?a)Appe...
The formation of the trophoblast and inner cell mass occurs before implantation, as these structures are part of the blastocyst. The blastocyst implants into the uterine wall, leading to subsequent events like the appearance of germinal layers, formation of chorionic villi, and secretion of HCG. Therefore, the correct answer is Option D.
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Which of the following events does not occur after implantation?a)Appe...
Understanding Implantation Events
Implantation is a crucial phase in pregnancy where the blastocyst attaches to the uterine lining. Post-implantation, several significant events occur. However, the correct answer to which event does not happen after implantation is option 'D'.
Key Events After Implantation
- Appearance of Germinal Layers:
After implantation, the embryonic development progresses, leading to the formation of germ layers—ectoderm, mesoderm, and endoderm. These layers are vital as they differentiate into various tissues and organs.
- Formation of Chorionic Villi:
The development of chorionic villi occurs shortly after implantation. These finger-like projections increase the surface area for nutrient exchange between the mother and the developing embryo.
- Secretion of HCG:
Human Chorionic Gonadotropin (HCG) is secreted by the trophoblast after implantation. This hormone plays a crucial role in maintaining the corpus luteum, which in turn supports the early stages of pregnancy.
Why Option 'D' is Correct
- Formation of Trophoblast and Inner Cell Mass:
The trophoblast and inner cell mass are components of the blastocyst and are formed before implantation, during the pre-implantation stage. The trophoblast will later contribute to the placenta, while the inner cell mass develops into the embryo. Since these structures are established prior to the implantation process, option 'D' is indeed the event that does not occur after implantation.
In summary, while several critical processes unfold following implantation, the formation of the trophoblast and inner cell mass is completed beforehand.
Implantation is a crucial phase in pregnancy where the blastocyst attaches to the uterine lining. Post-implantation, several significant events occur. However, the correct answer to which event does not happen after implantation is option 'D'.
Key Events After Implantation
- Appearance of Germinal Layers:
After implantation, the embryonic development progresses, leading to the formation of germ layers—ectoderm, mesoderm, and endoderm. These layers are vital as they differentiate into various tissues and organs.
- Formation of Chorionic Villi:
The development of chorionic villi occurs shortly after implantation. These finger-like projections increase the surface area for nutrient exchange between the mother and the developing embryo.
- Secretion of HCG:
Human Chorionic Gonadotropin (HCG) is secreted by the trophoblast after implantation. This hormone plays a crucial role in maintaining the corpus luteum, which in turn supports the early stages of pregnancy.
Why Option 'D' is Correct
- Formation of Trophoblast and Inner Cell Mass:
The trophoblast and inner cell mass are components of the blastocyst and are formed before implantation, during the pre-implantation stage. The trophoblast will later contribute to the placenta, while the inner cell mass develops into the embryo. Since these structures are established prior to the implantation process, option 'D' is indeed the event that does not occur after implantation.
In summary, while several critical processes unfold following implantation, the formation of the trophoblast and inner cell mass is completed beforehand.
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Which of the following events does not occur after implantation?a)Appearance of germinal layersb)Formation of chorionic villic)Secretion of HCGd)Formation of trophoblast and inner cell massCorrect answer is option 'D'. Can you explain this answer?
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Which of the following events does not occur after implantation?a)Appearance of germinal layersb)Formation of chorionic villic)Secretion of HCGd)Formation of trophoblast and inner cell massCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following events does not occur after implantation?a)Appearance of germinal layersb)Formation of chorionic villic)Secretion of HCGd)Formation of trophoblast and inner cell massCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following events does not occur after implantation?a)Appearance of germinal layersb)Formation of chorionic villic)Secretion of HCGd)Formation of trophoblast and inner cell massCorrect answer is option 'D'. Can you explain this answer?.
Which of the following events does not occur after implantation?a)Appearance of germinal layersb)Formation of chorionic villic)Secretion of HCGd)Formation of trophoblast and inner cell massCorrect answer is option 'D'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which of the following events does not occur after implantation?a)Appearance of germinal layersb)Formation of chorionic villic)Secretion of HCGd)Formation of trophoblast and inner cell massCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following events does not occur after implantation?a)Appearance of germinal layersb)Formation of chorionic villic)Secretion of HCGd)Formation of trophoblast and inner cell massCorrect answer is option 'D'. Can you explain this answer?.
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