NEET PG DENTAL EXAM

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HEAD NECK

ORAL CAVITY AND TONGUE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Another name for the primitive mouth that appears between the maxillary and mandibular processes is the ____
A
shallow dression
B
brachial arches
C
stomodeum
D
There is no such thing as a primitive mouth.
Explanation: 

Detailed explanation-1: -The mesenchymal primordia of the face form about the stomodeum (primitive mouth) and include the frontonasal prominence, maxillary prominences, and the mandibular prominences.

Detailed explanation-2: -The stomodeum, also called stomatodeum or stomatodaeum, is a depression between the brain and the pericardium in an embryo, and is the precursor to the mouth and the anterior lobe of the pituitary gland.

Detailed explanation-3: -THE UNPAIRED MEDIAN FRONTONASAL (FRONTAL) PROMINENCE (SWELLING) constitutes the upper boundary of the stomodeum resulting from proliferation ventral to the brain. THE PAIRED MAXILLARY PROMINENCES (SWELLINGS) of branchial arch I form the lateral boundaries or sides of the stomodeum. More items

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