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18 Questions

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Development of Palate in Embryology

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Questions and Answers

At which week of development do the lateral palatine processes/palatal shelves begin to ascend to a horizontal position?

5th week

4th week

6th week (correct)

7th week

What is the main factor in the closure of the secondary palate?

Displacement of the tongue from between the palatine shelves by the growth pattern of the head (correct)

Fusion of the palatal shelves in the median plane

Enlargement of the mandible only

Fusion of the lateral palatine processes with the nasal septum

What is the structure that is formed by the merging of two medial nasal prominences?

Primary palate

Intermaxillary Segment (correct)

Secondary palate

Hard palate

What is the role of the tongue in the development of the secondary palate?

It is displaced from between the palatine shelves Signup and view all the answers

What part of the hard palate does the primary palate represent in the adult?

A small part lying anterior to the incisive fossa Signup and view all the answers

What is the origin of the bridge or root of the nose?

Frontal prominence Signup and view all the answers

From which structure do the lateral palatine processes/palatal shelves develop?

Maxillary processes Signup and view all the answers

What is the time period during which the primary palate develops?

5th - 6th week of I.U life Signup and view all the answers

What is the origin of the palatal shelves?

Maxillary processes Signup and view all the answers

What is the primary outcome of the adhesion of the epithelia of the two palatine shelves?

Formation of a midline epithelial seam Signup and view all the answers

What is the final stage of palatogenesis?

The fusion of all processes Signup and view all the answers

During which week does the fusion of the palatal shelves with the nasal septum begin?

9th week Signup and view all the answers

What is the origin of the primary palate?

Fusion of two medial nasal processes Signup and view all the answers

What is the outcome of the breakdown of the oronasal membrane?

Formation of the primitive choanae Signup and view all the answers

What is the origin of the median palatine process?

Deep part of the intermaxillary segment Signup and view all the answers

What is the characteristic of the surface coat of the basal epithelial cells?

Rich in carbohydrates Signup and view all the answers

What is the result of the transformation of epithelial cells into mesenchymal cells?

Loss of epithelial characteristics Signup and view all the answers

What develops in the posterior part of the palate?

Soft palate Signup and view all the answers