QuestionSBA
QuestionChoice
Incorrect. The nasal cavity extends from the nostrils (external nares) to the posterior nasal apertures (internal nares), which open into the nasopharynx posteriorly. It is divided in half by the nasal septum. The floor is made from the palatine processes of the maxillae anteriorly and the horizontal plates of the palatine bones posteriorly. The lateral walls are formed by the maxillae and conchae.
10009073
d
Nasal cavity
QuestionChoice
Incorrect. The oral cavity extends from the vestibule of the mouth to the palatoglossus arches. The floor primarily consists of the tongue and the roof is formed by the palate. The lateral borders are formed by the buccinator muscles bilaterally, which are continuous with the superior pharyngeal constrictor muscle at the pterygomandibular raphe.
10009074
e
Oral cavity
QuestionChoice
Correct. The nasopharynx is the most superior region of the pharynx. It begins after the posterior nasal apertures in the nasal cavity and extends down to the level of the soft palate.
10009070
a
Nasopharynx
QuestionChoice
Incorrect. The sphenoidal sinus refers to the air spaces found within the sphenoid body of the skull base. It opens up into the spheno-ethmoidal recess above the superior concha bilaterally.
10009072
c
Sphenoidal sinus
QuestionChoice
Incorrect. The oropharynx is the intermediate region of the pharynx between the nasopharynx superiorly and the laryngopharynx inferiorly. It begins after the palatoglossus arches in the oral cavity and extends down to the level of the epiglottis.
10009071
b
Oropharynx
Concept
Chapter
2693
5304
Pharynx
Topic
201
Head and neck anatomy
14361
Picture
1721
16 - Pharynx (nasopharynx).png
images/mgdy9a7n1682950592421.jpg
images/mgdy9a7n1682950592421_256.jpg
images/mgdy9a7n1682950592421_512.jpg
ZhgODQL6l5t4t2aIhot2lwNeVMBV
Topic
201
Head and neck anatomy
Identify the labelled structure.

[lightgallery]
a