INBDE (Integrated National Board Dental Examination) Practice Exam

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Prepare for the INBDE (Integrated National Board Dental Examination) exam. Study with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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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.