Pharyngeal arches 01
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PHARYNGEAL ARCHES 01

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PHARYNGEAL ARCHES 01

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Pharyngeal arches 01

PHARYNGEAL ARCHES 01

26 DAY EMBRYO: This is a frontal section through the pharyngeal region of a 26 day embryo. Locate and identify the following: DIENCEPHALON, OPTIC STALK, OPTIC CUP, PHARYNGEAL ARCHES, ECTODERMAL COVERING OF ARCH, ENDODERMAL LINING OF ARCH, MESODERMAL CORE OF ARCH, AORTIC ARCHES, HEAD MESENCHYME and SPINAL CORD.


Pharyngeal arches 01

PHARYNGEAL ARCHES 02

SECOND PHARYNGEAL ARCH CYST:


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CT SCAN OF SECOND ARCH CYST: How does such a cyst develop?


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SECOND ARCH SINUS OR FISTULAE: How would you differentiate between a sinus and a fistulae?


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SECOND ARCH FISTULAE: Why?


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THYROGLOSSAL DUCT CYST. How does this condition develop?


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CT SCAN OF THYROGLOSSAL DUCT CYST


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SUPRA LINGUAL THYROID: How would you treat this abnormality?


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SUBLINGUAL THYROID: How would you treat this?


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HYPOTHYROIDISM: (also know as cretinism) What are the identifying characteristics of this condition?


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HYPERTHYROIDISM: How might this condition arise. What are the identifying characteristics?


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FIRST ARCH SYNDROME (TREACHER-COLLINS SYNDROME): Identify the characteristics of First Arch Syndrome. How does this condition arise embryologically?


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PHARYNGEAL ARCHES 13

FIRST ARCH SYNDROME (TREACHER-COLLINS SYNDROME): Identify the characteristics of First Arch Syndrome. How does this condition arise embryologically?


Pharyngeal arches 01

PHARYNGEAL ARCHES 14

FIRST ARCH SYNDROME (TREACHER-COLLINS SYNDROME): Identify the characteristics of First Arch Syndrome. How does this condition arise embryologically?


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PHARYNGEAL ARCHES 15

MICROGNATHIA (PIERRE ROBIN SYNDROME): With which arch is this abnormality associated?


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PHARYNGEAL ARCHES 16

FIRST PHARYNGEAL ARCH CYST: How do you know this is a first arch cyst?


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