Embryology/Anatomy Multiple Choice Questions

Front

At what gestational period does the otic placode invaginate to form the otic vesicle? Options: 2nd week, 3rd week, 4th week, 6th week, 8th week

Back

4th week

Front

Hypoplasia of the thymus likely originates from abnormal development of which pharyngeal pouch? Options: First pouch, Second pouch, Third pouch, Fourth pouch, Fifth pouch

Back

Third pouch

Front

Failure of the medial nasal prominences to fuse with the maxillary prominence leads to:

Back

Cleft lip

Front

A midline swelling copula on the floor of the pharynx gives rise to part of the tongue. This swelling originated from: First pharyngeal arch only, Second and third arches only, Third arch only, First, second, and third arches, Fourth arch only

Back

Second and third arches only

Front

The auricle develops from six hillocks of which pharyngeal arches?

Back

1 and 2

Front

Which pharyngeal pouch forms the parathyroid glands?

Back

Third and fourth

Front

The otic placode invaginates to form the otic pit during: 2nd week, 3rd week, 4th week, 5th week, 6th week

Back

4th week

Front

The membranous labyrinth of the inner ear originates from: Mesoderm of the first arch, Neural crest, Otic vesicle derived from otic placode

Back

Otic vesicle derived from otic placode

Front

The lens placode is induced by the underlying:

Back

Optic vesicle

Front

A cleft located posterior to the incisive foramen is classified as:

Back

Secondary cleft palate