INBDE (Integrated National Board Dental Examination) Practice Exam

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Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

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Muscles and skeleton came from what germ layer?

Ectoderm
Mesoderm
Endoderm
Mesenchyme

The correct answer is: Mesoderm

Muscles and skeleton are both part of the musculoskeletal system, which is responsible for movement, support and protection within the body. This system is derived from the mesoderm layer during embryonic development. The other options, including the ectoderm, endoderm, and mesenchyme, do not give rise to muscles and skeleton. The ectoderm forms the nervous system, the endoderm forms the digestive organs, and the mesenchyme gives rise to connective tissue, but not specifically the musculoskeletal system. Therefore, B Mesoderm is the correct answer.