Question 1

Question

A biopsy of the posterior wall of the pharynx reveals a stratified squamous epithelium overlying a lamina propria rich in mucous glands, with underlying skeletal muscle. A student is asked to identify the embryological origin of the epithelial lining in this region. Which of the following correctly identifies the embryologic origin of this epithelium?

Accepted Answer

Endoderm lining the foregut, independent of pharyngeal arch mesenchyme

Answer

Ectoderm derived from the surface epithelium of pharyngeal arch 1

Answer

Neural crest cells migrating from rhombomeres 6–8

Answer

Mesoderm of the lateral plate forming the buccopharyngeal membrane

Answer

Ectoderm of the stomodeum invaginating past the buccopharyngeal membrane

Upper/Lower Limb — MCQs

Upper/Lower Limb — MCQs

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