Branchial Cysts and Fistulas Quiz

From which of the following embryonic structures do the laryngeal cartilages and connective tissue in the head region originate?

What is the primary origin of the mesenchyme for the formation of the base and flat bones of the skull?

Which embryonic structure contributes to the formation of all voluntary muscles of the craniofacial region?

Where do the ectodermal placodes cells, together with the neural crest, form neurons of the fifth, seventh, ninth, and tenth cranial sensory ganglia?

Which embryonic structure forms mid facial and pharyngeal arch skeletal structures and all other tissues in these regions?

What embryonic structure contributes to the formation of dermis and connective tissues in the dorsal region of the head?

During neurulation, what structure forms the neural groove?

What is the narrow caudal portion of the closed tubular structure in the central nervous system called?

What forms the lens vesicle in the developing eye?

Which part of the ear originates from the otic vesicle?

At what stage does the optic cup become a round opening, the future pupil?

When do the lateral edges of the neural plate form neural folds?

What part of the ear develops from the 1st pharyngeal cleft?

During neurulation, what allows communication with the amniotic cavity before closure?

What part of the ear is derived from the 1st pharyngeal pouch?

What structure forms outpocketings of the forebrain during eye development?

During neurulation, what structure gradually expands toward the primitive streak?

What allows the hyaloid artery to reach the inner chamber of the developing eye?

Which embryonic structure forms the initial shape of the neural plate?

Which craniofacial defect involves a malformation of the conotruncal endocardial cushion?

Where does the thyroid gland initially appear as an epithelial proliferation?

What marks the development of the epiglottis and is supplied by the superior laryngeal nerve?

What facial prominence gives rise to the bridge of the nose?

Which prominences form the sides (alae) of the nose?

Which component forms the philtrum and upper lip during facial development?

What results from a lack of fusion of the palatine shelves during development?

Which embryonic defect results in abnormal facial appearance and defective speech?

What contributes to the formation of craniofacial defects such as persistence trunk arteriosus and tetralogy of Fallot?

What contributes to the formation of craniofacial defects such as transposition of the great vessels?

Which cranial nerve is responsible for the nerve supply of the muscles of mastication in the 1st pharyngeal arch?

Which structure arises from the mesenchyme of the maxillary process in the 1st pharyngeal arch?

Which cranial nerve supplies the muscles of facial expression in the 2nd pharyngeal arch?

What does the cartilage of the 3rd pharyngeal arch produce?

Which nerve innervates the muscles of the 3rd pharyngeal arch?

What do the cartilaginous components of the 4th and 6th pharyngeal arches fuse to form?

Which cranial nerve innervates the muscles of the 4th pharyngeal arch?

What is formed by the 1st pharyngeal pouch?

Which glands lose their connection with the pharyngeal wall during development?

Which structure arises from the epithelial lining of the 4th pharyngeal pouch?

From which pharyngeal cleft does the external auditory meatus arise?

What is formed by active proliferation of mesenchymal tissue in the 2nd arch?

What do birth defects involving the pharyngeal region often lead to?