18 Questions
What is the origin of the mucosa covering the root of the tongue?
Mesenchyme of the second, third arch and part of fourth arch
Which cranial nerve is responsible for the innervation of the tongue musculature?
Hypoglossal nerve
What is the origin of the epiglottis?
Posterior part of the fourth arch
What are the segmented blocks of paraxial mesoderm along the trunk of the embryo called?
Somites
What is the origin of the myoblasts that differentiate into tongue muscles?
Occipital somites
What is the approximate percentage of clefts among all reported anomalies in the United States?
15%
Which nerve is responsible for the innervation of the extreme posterior part of the tongue?
Superior laryngeal nerve
Which of the following is NOT a type of environmental factor that can affect the embryo and contribute to cleft lip and cleft palate?
Weather conditions
What is the term for the lack of fusion between the medial nasal process and maxillary process in one side?
Unilateral cleft lip
Which of the following is a genetic cause of cleft lip and cleft palate?
Genetic defects or disorders
What is the approximate incidence of cleft lip per 1000 births?
1/1000
Which of the following is a type of facial cleft due to the lack of fusion between the maxillary process and lateral nasal process?
Oblique facial cleft
Which pharyngeal arch is associated with the development of the posterior most part of the tongue?
Fourth pharyngeal arch
Which cranial nerve is responsible for supplying the mucosa of the posterior third of the tongue?
Glossopharyngeal nerve
What is the primary function of the tongue in the digestive system?
All of the above
What is the embryonic structure that gives rise to the anterior two-thirds of the tongue?
Lingual swellings and tuberculum impar
What is the function of the tongue in the act of speech?
Enabling speech
What is the name of the swelling that appears in the midline during tongue development?
Tuberculum impar
This quiz covers the developmental origins of the tongue and its innervation, including the roles of different arches and nerves in its formation and function. Test your knowledge of the embryonic development of the tongue and its associated musculature and nerves.
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