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23 Cards in this Set
- Front
- Back
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What are the 4 components of Pharyngeal arches?
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- Muscle component
- Cartilage - Cranial nerve - Aortic arch |
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What are the 2 portions of the 1st pharyngeal arch?
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- Maxillary prominence
- Mandibular prominence |
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What nerve supply the derivatives of the 1st arch?
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CN V
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What nerve supply the derivatives of the 2nd arch?
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CN VII
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What nerve supply the derivatives of the 3rd arch?
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CN IX
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What nerve supply the derivatives of the 4th arch?
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Superior laryngeal branch
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What nerve supply the derivatives of the 6th arch?
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Recurrent laryngeal branch
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What does the cartilage of the 1st pharyngeal arch form?
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Meckel cartilage
- 2 middle ear ossicles - Horseshoe-shaped primordium of the mandible |
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What does the cartilage of the 2nd pharyngeal arch form?
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Reichert cartilage
- 1 middle ear ossicle - Styloid process of temporal bone - Part of hyoid bone |
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What does the cartilage of the 3rd pharyngeal arch form?
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- Part of hyoid bone
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What does the cartilage of the 4th & 6th pharyngeal arch form?
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- Laryngeal cartilages (Except epiglottis)
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What does the muscles of the 1st pharyngeal arch form?
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Muscles of mastication
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What does the muscles of the 2nd pharyngeal arch form?
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Muscles of facial expression
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What does the muscles of the 3rd pharyngeal arch form?
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Stylopharyngeus
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What does the muscles of the 4th pharyngeal arch form?
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Cricothyroid
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What are pharyngeal pouch and grooves?
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Pouches: Paired segmented balloon-like pockets separating the pharyngeal arches internally
Grooves: Paired clefts separating pharyngeal arches externally |
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What does the 1st pharyngeal groove form?
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External acoustic meatus
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What does the 1st pharyngeal membrane form?
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Tympanic membrane
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What does the 1st pharyngeal pouch give rise to?
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- Tympanic membrane
- Tympanic cavity - Auditory tube |
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What does the 2nd pharyngeal pouch give rise to?
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- Surface epithelium and lining of the tonsilar crypt
- Lymphatic nodules of the palatine tonsil |
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What does the 3rd pharyngeal pouch give rise to?
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- Inferior parathyroid gland
- Thymus |
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What does the 4th pharyngeal pouch give rise to?
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- Superior parathyorid gland
- Parafollicular cells |
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What is the thyroid gland formed from?
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Thyroid diverticulum
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