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Branchial Arches
Question | Answer |
---|---|
Arch I - nerve | CN V |
Arch I - Muscles | Muscles of Mastication, Mylohyoid, Anterior Belly of Digastric, Tensor veli palatine, Tensor tympani |
Arch I - Cartilages | Malleus, Incus |
Arch I - Ligaments | Anterior Ligament of Malleus, Sphenomandibular ligament |
Arch I - Pouch | Pharyngotympanic tube, Tympanic Cavity, Mastoid antrum |
Arch I - Groove | External acoustic meatus |
Arch I - Membrane | Tympanic Membrane |
Arch II - Nerve | CN VII |
Arch II - Muscles | Muscles of Facial Expression, Stapedius, Stylohyoid, Posterior Belly of Digastric |
Arch II - Cartilages | Stapes, Styloid Process, Lesser cornu, Upper Body of Hyoid |
Arch II - Ligaments | Stylohyoid ligament |
Arch II - Pouch | Tonsillar Sinus/Fossa, Endoderm -> Crypts |
Arch II - Groove | Nothing |
Arch II - Membrane | Nothing |
Arch III - Nerve | CN IX |
Arch III - Muscles | Stylopharyngeus |
Arch III - Cartilages | Greater cornu, Lower body of Hyoid |
Arch III - Ligaments | Nothing |
Arch III - Pouch | Inferior Parathyroid Gland, Thymus |
Arch III - Groove | Nothing |
Arch III - Membrane | Nothing |
Arch IV & VI - Nerve | CN X, Superior Laryngeal (4), Recurrent Laryngeal (6) |
Arch IV & VI - Muscles | Cricothyroid (4), Constrictors of Pharynx, Levator veli palatine, Intrinsic Muscles of Larynx (6) |
Arch IV & VI - Cartilages | Laryngeal Cartilages: Thyroid, Cricoid, Arytenoid, Corniculate, Cuneiform |
Arch IV & VI - Ligaments | Nothing |
Arch IV & VI - Pouch | Superior parathyroid gland, Ultimopharyn-geal body -> Parafollicular cells in thyroid gland |
Arch IV & VI - Groove | Nothing |
Arch IV & VI - Membrane | Nothing |