Arches
Artery of third arch forms which major vessel?
Common carotid artery
Cervical sinus is formed by persistence of which clefts
Second, third, and fourth clefts
Optic vesicle arises from which brain part
Diencephalon
General sensation of anterior two-thirds supplied by which nerve
Lingual nerve
Embryological basis of ankyloglossia
Failure of adequate degeneration leads to persistence of an abnormally short frenulum → ankyloglossia.
Nerve of fourth arch
superior laryngeal nerve
Ultimobranchial body is derived from which pouch
Fourth pouch
Lens develops from?
Surface ectoderm
Pyramidal lobe remanent of ?
Thyroglossal duct
Embryological basis of coloboma
Failure of closure of choroidal fissure
Embryological origin of stapes
Second arch (Reicharts cartilage)
The parathyroid glands are derived from which germ layer
Endoderm
The double-layered optic cup forms in which week?
Fifth week
Thyroid follicular cells are derived from which germ layer
Endoderm
Mandibular hypoplasia, malformed pinna, conductive hearing loss due to ossicular defects.
Treacher Collins syndrome
Arch contributing to greater horn of hyoid
Third arch
Tympanic membrane has contribution from which pouch and cleft?
First pouch and first cleft
The hyaloid artery is a branch of which embryonic artery
Ophthalmic artery
Vallate papillae develop from which arch region
Third arch
Developmental basis of DiGeorge syndrome
Failure of development of third and fourth pouches
Right subclavian artery (proximal part) develops from which arch
Right fourth arch
First cleft anomaly may involve which gland
Parotid gland
Iris muscles are derived from which germ layer
Neuroectoderm
Thyroid primordium appears in which week
4th week
Epithelial origin of branchial fistula tract
Ectoderm and endoderm