NEET MDS Shorts
48008
General PathologyOsmotic fragility is increased in hereditary spherocytosis due to the abnormal shape and membrane stability of red blood cells.
62970
Oral and Maxillofacial SurgeryDentists determine the position of an impacted tooth using an x-ray by evaluating its relationship with the nerve, the adjacent teeth, and other anatomical structures such as the maxillary sinus or the mandibular canal. This helps in planning the surgical approach for extraction and predicting potential complications.
19178
ProsthodonticsA patient wants a new set of CD. The present set which he is wearing now is loose. Examination revealed papillary hyperplasia of the palate. The first thing you would like to do is use tissue conditioners on the maxillary denture for the abused tissue.
13418
Microbiology
A 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. 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
The lymphokines promote a reaction (especially mediated through macrophages) beginning in hours but reaching a peak in 2 to 3 days.
46171
Public Health Dentistry
After the administration of a local anesthetic (L.A.), the sensations are typically lost in a specific order based on the diameter and myelination of the nerve fibers. The order of loss is generally:
Pain and temperature (carried by small, unmyelinated or lightly myelinated fibers) are lost first.
Touch and pressure (carried by larger, myelinated fibers) are lost later.
40926
General PathologySickle cell mutation is a point mutation, specifically a single nucleotide substitution in the ?-globin gene.
64826
BiochemistryProthrombin production in the liver is dependent upon Vitamin K intake
33215
Oral Medicine
Nephrotic syndrome is associated with hyperlipidemia, particularly increased levels of LDL and cholesterol. The underlying mechanism involves the loss of albumin in the urine, which leads to hypoalbuminemia. This causes an increased synthesis of very low-density lipoproteins (VLDL) by the liver to compensate for the loss of oncotic pressure. Additionally, the loss of proteins that normally bind to cholesterol in the blood, such as lipoproteins, results in decreased clearance of LDL.
38852
Medicine
72056
PhysiologyThe acrosome in sperm contains enzymes that help in the penetration of the ovum during fertilization, facilitating the fusion of sperm and egg.