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.Management Sciences
Category: Oral Histology
Enamel rods at the cervical area at the occlusal edge and incisal lip in permanent teeth are______________?
A. Straight
B. Shallow
C. Bent
D. Curved
Resorption of dental tissue is caused by_____________?
A. Osteoclasts
B. Osteoblasts
C. Odontoclasts
D. Odontoblasts
Which of the following is correct_______________?
A. Non-keratinized epithelium is characterized by absence of stratum granulosum and stratum corneum, The surface cells are nucleated
B. Parakeratinished epithelium is characterized by superficial cells with pyknotic nuclei and absence of stratum granulosum
C. In ortho keratinisation the superficial cells lose their nuclei, but stratum granulosum is present
D. All of the above
perikymata are the external surface manifestations of_____________?
A. Enamel rods
B. Incremental lines of retzius
C. Nasmyth’s membrane
D. Pellicle
Mucin in mucous cells usually demonstrated by______________?
A. PAP stain
B. H & E stain
C. Mucicarmine stain
D. Mallory stain
Regarding teeth which statement is wrong ?
A. Enamel is harder than dentine
B. Enamel has no cells
C. Ameloblast secrete enamel and dentine
D. Odontoblast produce dentin
An enzyme present in saliva which causes cell wall lysis____________?
A. Lysozhyme
B. Peroxidase
C. Lactoferin
D. Hyaluronidase
Biomechanism that unites the epithelium to the tooth surface is_____________?
A. Internal basal lamina
B. Junctional epithelium
C. Reduced enamel epithelium
D. Epithelial attachment
The articular cartilage is characterized by all of the following features except_____________?
A. It is devoid of perichondrium
B. It has a rich nerve supply
C. It is avascular
D. It lacks the capacity to regenerate
Which of the following has immune function in the oral mucous membrane_______________?
A. Melanocyte
B. Merkel cells
C. Langerhan cell
D. Keratinocyte
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