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Question
Which of the following structures is ectodermal in origin?
Which of the following structures is ectodermal in origin?
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Solution
The correct option is C Brain
There are three germ layers, namely ectoderm, endoderm and mesoderm. These three germ layers then divide into different body parts. Parts of skin, brain, neurons and the nervous system are originated from ectoderm. Endoderm develops into digestive and respiratory tracts, urinary system, liver, pancreas, gallbladder, thyroid gland, parathyroid glands and thymus. Mesoderm develops into bones, muscles heart and circulatory system.Thus, the correct answer is option B.
There are three germ layers, namely ectoderm, endoderm and mesoderm. These three germ layers then divide into different body parts. Parts of skin, brain, neurons and the nervous system are originated from ectoderm. Endoderm develops into digestive and respiratory tracts, urinary system, liver, pancreas, gallbladder, thyroid gland, parathyroid glands and thymus. Mesoderm develops into bones, muscles heart and circulatory system.
Thus, the correct answer is option B.
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