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Questions and Answers
Which of the following does NOT contribute to the formation of the pharyngeal arch?
Which of the following does NOT contribute to the formation of the pharyngeal arch?
- Neural crest cells
- Mesenchyme
- Hox genes
- Ectoderm (correct)
Which one of the following is NOT a characteristic of the pharyngeal arches?
Which one of the following is NOT a characteristic of the pharyngeal arches?
- They all develop into adult head and neck structures
- They are unilateral
- They are made up entirely of ectoderm (correct)
- They meet in the middle line in the floor of the pharynx
Which of the following statements about Meckel's cartilage is incorrect?
Which of the following statements about Meckel's cartilage is incorrect?
- It degenerates after contributing to the formation of structures (correct)
- It is the connective tissue element of Arch I
- It contributes to the formation of the incus and stapes
- It provides the model for the mandible to form
Which of the following structures is NOT a derivative of the connective tissue cells of the first pharyngeal arch?
Which of the following structures is NOT a derivative of the connective tissue cells of the first pharyngeal arch?
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Which group of muscles is formed by the cells of the second pharyngeal arch?
Which group of muscles is formed by the cells of the second pharyngeal arch?
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