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23 Cards in this Set

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