NEET MDS Shorts
759446
PedodonticsElectrosurgery uses controlled high-frequency electrical current in the range of 1.5-7.5 million cycles/second.
227303
ProsthodonticsRetromolar area should be covered in CD or distal extension RPD in order to derive support from the underlying bone which is resistant to resorption.
442615
General MicrobiologyAnthracoid bacilli, such as those in the genus Bacillus, are capable of fermenting various sugars, including glucose, maltose, lactose, and sucrose. This fermentation process results in the production of acid and gas, which can be detected by observing changes in the pH of the medium and the formation of gas bubbles. This statement is true as it accurately describes the typical sugar fermentation profile of these bacteria.
284998
MicrobiologyA classic example of delayed type IV hypersensitivity is the Mantoux tuberculin test in which skin induration indicates exposure to tuberculosis.
This reaction is called "delayed hypersensitivity" because it is mediated by sensitized CD4+ T lymphocytes which process antigens in association with class II HLA molecules and release lymphokines.
The lymphokines promote a reaction (especially mediated through macrophages) beginning in hours but reaching a peak in 2 to 3 days.
Hypersensitivity reactions with this mode of action include:
Granulomatous diseases (mycobacteria, fungi)
Tuberculin skin reactions
Transplant rejection
Contact dermatitis
Cytotoxic T lymphocyte (CTL) mediated responses: CD8+ T cells are generated and lyse specific cells. Class I HLA molecules play a role. Reactions with this mode include:
Neoplastic cell lysis
Transplant rejection
Virus-infected cell lysis
841803
PeriodonticsLesions in ANUG can be described as ulcerative lesions that are infectious but not contagious.
407942
General MedicineThe PTT (Partial Thromboplastin Time) is prolonged in deficiencies of factors VIII, IX, and XII, which are part of the intrinsic pathway of the coagulation cascade. Since factor VIII deficiency is more common and is associated with a bleeding diathesis, it is the most likely deficiency in this scenario.
733331
PhysiologyVitamin D deficiency is most commonly due to insufficient exposure to sunlight, as the skin synthesizes vitamin D when exposed to UVB radiation. Other factors include poor dietary intake and impaired conversion or absorption in the liver and kidneys.
836768
General MicrobiologyYellow is the designated color for bio-medical waste that is considered hazardous and requires incineration or deep burial. This classification helps in the proper disposal of infectious and potentially harmful materials.