Muscles develop from:
Correct answer: B. mesoderm
- A. ectoderm
- B. mesoderm
- C. endoderm
- D. all of the above
Explanation
Muscles develop from the mesoderm, which is one of the three primary germ layers in the early embryo. The mesoderm also gives rise to the skeletal and reproductive systems. The ectoderm forms the skin and nervous system, while the endoderm develops into the lining of the digestive and respiratory systems. Thus, the correct answer is B: mesoderm.
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