Which of the following arise from endoderm?a)Eyeb)Heartc)Pigment cellsd)LungsCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Ectoderm is the germ layer that develops primarily into skin and neural tissue. Mesoderm primarily develops into muscle tissues and red blood cells. Endoderm develops into many of the internal organs including the gastrointestinal tract, respiratory tract, and endocrine system.

Answer

The endoderm and mesoderm contribute to lung development; the endoderm lining the respiratory diverticulum gives rise to the epithelium and glands of the trachea, bronchi, and alveoli as well as the epithelial lining of the larynx, while the splanchnic mesoderm gives rise to the connective tissue, cartilage, airway.

Answer

The

endoderm

produces the gut tube and its derived

organs

, including the cecum, intestine, stomach, thymus, liver, pancreas, lungs, thyroid and prostate.

Answer

Understanding Germ Layers
In embryonic development, three primary germ layers form: ectoderm, mesoderm, and endoderm. Each layer gives rise to specific tissues and organs in the body.
Key Germ Layers
- Ectoderm: Develops into the skin, hair, nails, and nervous system.
- Mesoderm: Forms the muscles, bones, cardiovascular system, and most of the urogenital system.
- Endoderm: Gives rise to the internal organs, particularly those of the digestive and respiratory systems.
Endodermal Derivatives
Among the options provided, the lungs are the only structure that arises from the endoderm. Here’s a breakdown:
- Lungs:
- Formed from the endoderm during the development of the respiratory system.
- Specifically, the lung epithelium originates from the foregut endoderm, which later differentiates into the trachea and lungs.
- Heart:
- Develops from the mesoderm, specifically from the mesodermal layer that forms the cardiac tissue and blood vessels.
- Pigment Cells:
- These cells, including melanocytes, originate from the neural crest cells, which are derived from the ectoderm.
- Eye:
- The eye structure, including the retina, also arises from the neuroectoderm, which is a derivative of the ectoderm.
Conclusion
In summary, while heart and pigment cells arise from mesoderm and ectoderm respectively, the lungs are the sole option that develops from the endoderm. Understanding these distinctions is crucial for grasping embryonic development and organogenesis, particularly for NEET aspirants.

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