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Which of the following is true?

A. Maxillary sinus communicates with environment through middle meatus and nasal vestibule

B. Maxillary sinus is four- sided pyramid

C. In most of the cases, the main ostium is present in posterior third of hiatus semilunar

D. All of the above

Related Questions on Oral Histology Mcqs

Which of the following is correct ?

A. Parotid – stenson’s duct – pure serous

B. Submandibular – Wharton’s duct – mixed and predominantly serous

C. Sublingual gland – bartholin’s duct – mixed and predominantly mucous

D. All of the above

Which of the following is correct?

A. Roof of mandible contains thin, compact bone

B. Articular tubercle is composed of spongy bone covered with thin compact bone

C. Condyle contains red bone marrow

D. All of the above

Which of the following is true?

A. Cutting cone or resorption tunnel is the area of resorption seen in alveolar bone

B. CAMP or cyclic adenosine monophosphate levels are increased on pressure side of bone and this results in bone resorption

C. Immature born / embryonic bone seen during fracture healing contains less calcified material and greater number of large osteocytes

D. All of the above

Which of the following is true_____________?

A. All the bones of upper face develop by intra membranous ossification

B. Incus and malleus develops from mecketls cartilage

C. The third auditory ossicle or stapes develops from 2nd branchial arch

D. All of the above