The maxillary air sinus opens into middle meatus at______________?

Related Mcqs:

1. Maxillary sinus is described as a four sided pyramid containing base, apex, roof and floor. The apex of maxillary sinus extends________________?

   A. Laterally into zygomatics process of maxilla
   B. Medially into zygomatic process of maxilla
   C. Laterally into lateral nasal wall
   D. Superiorly into floor of orbit

2. What is maxillary air sinus ?

   A. Paranasal air sinus situated close to maxilla
   B. Venous sins situated close to maxilla
   C. Paranasal air sinus situated in maxilla
   D. Venous sinus extending in to the maxilla

3. The maxillary sinus drains into_______________?

   A. Middle plexus
   B. Inferior meatus
   C. Superior meatus
   D. Spheno ethmoidal recess

4. External auditory meatus develops from___________________?

   A. Dorsal part of 1st ectodermal pouch
   B. Dorsal part of 2nd cleft
   C. Dorsal part of 3rd ectodermal pouch
   D. Sixth branchial arch

5. Maxillary primary cuspid enamel completion takes place at______________?

   A. 6 months in utero
   B. 6 months after birth
   C. 9 months in utero
   D. 9 months after birth

6. The tooth present close to maxillary sinus is_________________?

   A. 1st molar
   B. 2nd premolar
   C. 1st premolar
   D. 2nd molar

7. The process of recesses formation in maxillary sinus is most frequently seen with________________?

   A. Zygomatic process
   B. Frontal process
   C. Alveolar process
   D. Palatine process

8. Functional importance of maxillary sinus is______________?

   A. Lightening of skull weight and production of bactericidal lysozyme to the nasal cavity
   B. Protects the brain against exposure to cold air by arresting air in sinus temporarily
   C. Resonance of voice and enhancement of faciocranial resistance to mechanical shock
   D. All of the above

9. The type of epithelium lining maxillary sinus is_______________?

   A. Simple columnar
   B. Pseudo stratified columnar and cilliated
   C. Stratified squamous
   D. Simple squamous

10. Mobility of teeth in carcinoma of Maxillary sinus is due to involvement by tumor of_________________?

    A. Anterior wall of the sinus
    B. Posterior wall of the sinus
    C. Roof of the sinus
    D. Floor of the sinus