5 Questions
Which pharyngeal arch is responsible for the formation of the muscles of mastication?
1st
Which structure is a derivative of the 2nd pharyngeal pouch?
Palatine tonsil
Which pharyngeal arch gives rise to the hyoid bone?
2nd
Auricular pits and cysts are remnants of which pharyngeal structure?
1st pharyngeal arch
Branchial (lateral cervical) sinuses, cysts, and fistulae are associated with the failure of which structure to obliterate?
1st pharyngeal cleft
Study Notes
Pharyngeal Arch Development
- The 1st pharyngeal arch is responsible for the formation of the muscles of mastication.
- The 2nd pharyngeal pouch gives rise to the palatine tonsils.
- The 3rd pharyngeal arch contributes to the formation of the hyoid bone.
Pharyngeal Remnants and Defects
- Auricular pits and cysts are remnants of the 1st and 2nd pharyngeal clefts.
- Branchial (lateral cervical) sinuses, cysts, and fistulae are associated with the failure of the 2nd to 4th pharyngeal clefts to obliterate.
Test your knowledge of pharyngeal arches in embryology with this quiz. Identify the basic structures and discuss the derivatives of the branchial arches. Sharpen your understanding of mesodermal derivatives and enhance your learning outcomes.
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