This Diagram Shows the Development of Pharyngeal Arches

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EMBRYOLOGY: PHARYNGEAL ARCHES This diagram shows the development of pharyngeal arches . At what stage of development do these structures appear? . Why were these structures called branchial arches initially? . How many pharyngeal arches develop in an embryo? . Which pharyngeal arch does not give rise to any derivatives? . List the three components which make up the pharyngeal arches. What does each component form? . Which two structures contribute towards the formation of the first pharyngeal arch? . Which pharyngeal arches are responsible for the formation of the three bony ossicles of the ear? This diagram shows the development of the pharyngeal pouches . What do each of the pouches form? . What does the tubotympanic recess contribute to? This diagram shows the embryonic development of the tongue . At what stage of development does the tongue develop? . From which pharyngeal arch does the anterior two-thirds of the tongue develop? . Which pharyngeal arches are responsible for the formation of the posterior third of the tongue? . Identify the abnormality depicted in the two pictures. Identify the abnormality depicted in the two pictures. This diagram shows the formation of the thyroid . From which germ layer does the thyroid gland derive? . Where does the thyroid gland originate? . When does the thyroid gland become functional? This diagram shows the migratory pathway of the thyroid gland from foramen cecum . Describe this pathway. This diagram shows the formation of thyroglossal cysts . What results in the formation of these cysts? . At what level in the neck region are these cysts commonly found? Short essay questions . Describe the embryonic development of the tongue. (8 marks) . Describe the embryonic development of the thyroid gland. (5 marks) Multiple choice questions . Cartilage of the second pharyngeal arch a. Is known as Meckel’s cartilage. b. Gives rise to the stapes of the ear. c. Gives rise to the styloid process of the temporal bone. d. Gives rise to the malleus of the ear. e. Is also known as hyoid arch cartilage. With regards to the third pharyngeal pouch a. The ventral wing forms the thymus. b. The dorsal wing forms the superior parathyroid gland. c. It gives rise to the ultimobranchial body. d. It gives rise to the palatine tonsil. e. It differentiates into the tubotympanic recess. Match the embryonic structures in column A with their frontrunners in column B COLUMN A COLUMN B 1) Meckel’s cartilage a) Tubotympanic recess 2) Second pharyngeal arch b) External auditory meatus 3) Second pharyngeal pouch c) Incus and malleus 4) First pharyngeal groove d) Stapes 5) First pharyngeal pouch e) Palatine tonsil 6) Intra embryonic mesoderm f) Parafollicular cells 7) Lateral lingual swellings g) Inferior parathyroid gland 8) Third pharyngeal pouch h) Posterior third of the tongue 9) Copula i) Skeletal muscles 10) Ultimobranchial body j) Body of tongue .

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Endothelium in the Pharyngeal Arches 3, 4 and 6 Is Derived from the Second Heart Field
Thomas Jefferson University Jefferson Digital Commons Center for Translational Medicine Faculty Papers Center for Translational Medicine 1-15-2017 Endothelium in the pharyngeal arches 3, 4 and 6 is derived from the second heart field. Xia Wang Thomas Jefferson University Dongying Chen Thomas Jefferson University Kelley Chen Thomas Jefferson University Ali Jubran Thomas Jefferson University AnnJosette Ramirez Thomas Jefferson University Follow this and additional works at: https://jdc.jefferson.edu/transmedfp Part of the Translational Medical Research Commons LetSee next us page know for additional how authors access to this document benefits ouy Recommended Citation Wang, Xia; Chen, Dongying; Chen, Kelley; Jubran, Ali; Ramirez, AnnJosette; and Astrof, Sophie, "Endothelium in the pharyngeal arches 3, 4 and 6 is derived from the second heart field." (2017). Center for Translational Medicine Faculty Papers. Paper 45. https://jdc.jefferson.edu/transmedfp/45 This Article is brought to you for free and open access by the Jefferson Digital Commons. The Jefferson Digital Commons is a service of Thomas Jefferson University's Center for Teaching and Learning (CTL). The Commons is a showcase for Jefferson books and journals, peer-reviewed scholarly publications, unique historical collections from the University archives, and teaching tools. The Jefferson Digital Commons allows researchers and interested readers anywhere in the world to learn about and keep up to date with Jefferson scholarship. This article has been accepted for inclusion in Center for Translational Medicine Faculty Papers by an authorized administrator of the Jefferson Digital Commons. For more information, please contact: [email protected]. Authors Xia Wang, Dongying Chen, Kelley Chen, Ali Jubran, AnnJosette Ramirez, and Sophie Astrof This article is available at Jefferson Digital Commons: https://jdc.jefferson.edu/transmedfp/45 HHS Public Access Author manuscript Author ManuscriptAuthor Manuscript Author Dev Biol Manuscript Author .
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PharyngealPharyngeal archesarches andand pouchespouches L.MossL.Moss--SalentijnSalentijn PharyngealPharyngeal arches:arches: aa definitiondefinition A segmental series of five paired swellings that surround the foregut between days 20 to 35 of embryonic development. These segments, which are unique to vertebrates, are “wedged” between the developing forebrain and heart. PharyngealPharyngeal archesarches a.k.a.a.k.a. visceralvisceral oror branchialbranchial archesarches DevelopDevelop (and(and disappeardisappear asas distinctivelydistinctively visiblevisible structures)structures) inin aa rostrorostro--caudalcaudal sequencesequence RequireRequire neuralneural crestcrest cellscells forfor theirtheir developmentdevelopment EvenEven afterafter theythey areare nono longerlonger visiblevisible externally,externally, theythey havehave aa lastinglasting impactimpact onon thethe anatomyanatomy ofof thethe headhead andand neckneck andand ofof thethe greatgreat vesselsvessels 55 PharyngealPharyngeal archesarches 55 AorticAortic archesarches ArchesArches numberednumbered 11--66 Arches,Arches, grooves,grooves, pouches,pouches, andand membranesmembranes Pharyngeal groove Pharyngeal pouch Pharyngeal arch Foregut Pharyngeal membrane PharyngealPharyngeal cleftcleft transienttransient “gill“gill--slit”slit” photograph by Purcell R,National Geographic November 2006 Dell H (2006) BasicBasic bodybody planplan ofof allall chordateschordates (incl.(incl. vertebrates)vertebrates) Dorsal hollow neural tube Segmented lateral mesoderm Central notochord Ventral
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