NEET MDS Shorts
29189
PeriodonticsMast cells contain granules rich in histamine and heparin. Histamine is a vasoactive amine that is released during allergic reactions and inflammatory processes, causing vasodilation and increased vascular permeability.
83878
General PathologyConjunctivitis is often associated with Sjögren's syndrome, which can cause oral mucosal swelling and xerostomia.
69127
EndodonticsThis statement is untrue - carbopol is not typically used in home bleaching systems. Home bleaching uses 10-15% carbamide peroxide in a gel form with custom vacuum-formed trays.
17203
Physiology
The reticulospinal tract arises from neurons in the reticular formation of the brainstem and projects to the spinal cord. It influences both voluntary and involuntary motor activities, modulating the excitability of motor neurons. The corticospinal tract arises from the cerebral cortex, the vestibulospinal tract from the vestibular nuclei, the rubrospinal tract from the red nucleus, and the tectospinal tract from the superior colliculus.
95855
Oral PathologyBell's palsy can be triggered by exposure to cold, tooth extraction, or infections.
63162
Oral Medicine
Answer: 2. Leukaemic
Explanation:
Conditional gingival enlargement (also known as inflammatory gingival enlargement) is caused by local irritants (like dental plaque) and is modified by systemic conditions. It is associated with hormonal changes (e.g., during pregnancy or puberty), certain medications (drug-induced), and is the underlying cause of lesions like granuloma pyogenicum.
Leukaemic gingival enlargement, however, is a non-inflammatory enlargement caused by the infiltration of leukaemic cells into the gingival tissues, which is a direct manifestation of systemic disease rather than a condition modifying a pre-existing inflammatory response.
38466
PeriodonticsA Gracey curette is correctly adapted when the lower shank is parallel with the tooth surface being scaled.
66076
Oral SurgeryThe role of sodium metabisulfite in local anaesthetic agent is as a preservative.
88161
Physiology
The glomerular filtration barrier is a three-layered structure composed of endothelial cells of the glomerular capillaries, the basement membrane, and the podocytes (visceral epithelial cells of Bowman's capsule). These layers work together to filter blood, allowing small molecules to pass into the nephron while retaining larger ones.
44251
RadiologyAn occluded submandibular salivary duct can be best observed by sialography.