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Questions and Answers
Which structures grow on either side of the future head and neck of the developing embryo?
Which structures grow on either side of the future head and neck of the developing embryo?
- Ectomesenchyme
- Pharyngeal arches (correct)
- Pharyngeal clefts
- Neural crest cells
What is the outer covering of each pharyngeal arch?
What is the outer covering of each pharyngeal arch?
- Ectomesenchyme
- Mesoderm
- Ectoderm (correct)
- Endoderm
What are the 4th and 6th pharyngeal arches ultimately fused together to form?
What are the 4th and 6th pharyngeal arches ultimately fused together to form?
- Fused together to form the hyoid arch
- Fused together to form a structure that ultimately disappears (correct)
- Fused together to form the mandibular arch
- Fused together to form a transitory structure
Which pharyngeal structure is separated from the internal pharyngeal pouches by thin pharyngeal membranes?
Which pharyngeal structure is separated from the internal pharyngeal pouches by thin pharyngeal membranes?
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What type of tissue forms the core of each pharyngeal arch?
What type of tissue forms the core of each pharyngeal arch?
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Study Notes
Pharyngeal Arch Development
- Pharyngeal arches grow on either side of the future head and neck of the developing embryo.
Pharyngeal Arch Structure
- Each pharyngeal arch has an outer covering of ectoderm.
Pharyngeal Arch Fusion
- The 4th and 6th pharyngeal arches ultimately fuse together to form the larynx.
Pharyngeal Pouches and Membranes
- The pharyngeal groove is separated from the internal pharyngeal pouches by thin pharyngeal membranes.
Pharyngeal Arch Core
- Mesoderm tissue forms the core of each pharyngeal arch.
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