NEET MDS Shorts
73891
PhysiologyCalcium is absorbed mainly in the duodenum and jejunum by an active transport mechanism regulated by 1,25 (OH)2 D3 (calcitriol). It is transported across the brush border of intestinal epithelial cells via TRPV6 channels and binds to calbindin. The absorbed calcium is then delivered to the basolateral membrane by calbindin, and from there it is transported into the bloodstream by either the sodium-calcium exchanger (NCX) or calcium-dependent ATPase.
29571
NEETMDS
Positive nitrogen balance
occurs when the intake of nitrogen (protein) is greater than its
excretion, indicating net protein anabolism (building up tissues). This
is a normal physiological state during periods of growth, such as
childhood, adolescence, and pregnancy, where new
tissues are being synthesized. Kwashiorkor
and marasmus are forms of malnutrition characterized by negative
nitrogen balance (protein catabolism), as is a prolonged fever
state.
56156
Oral PathologyOsteosarcoma typically shows a sunburst pattern with radiopaque strands extending from the cortical plates. This characteristic appearance results from tumor bone formation perpendicular to the cortex, creating spiculated patterns. Other features include Codmans triangle (elevated periosteum) and mixed radiolucent-radiopaque appearance. Cotton wool appearance is seen in Pagets disease, soap-bubble in giant cell granuloma, and discrete radiolucency in benign lesions.
43336
NEETMDSAustralian wire, which is a round austenitic wire, is manufactured by annealing and then cold drawing. This process results in a wire with specific properties suitable for use in differential light force techniques.
89219
Orthodontics
SOLUTION
43433
PedodonticsA chisel can effectively remove gross subgingival calculus in deep narrow pockets with fibrotic tissue.
60341
INI CET
The modulus of elasticity of PMMA is approximately 2.4GPa. The hardness is approximately 70KHN. PMMA remains chemically stable up to a temperature of 260 degreeF. The typical tensile strength of PMMA is around 50-70 MPa. Therefore, 20 MPa is the incorrect statement.
23605
Public Health Dentistry
Sensitivity is the ability of a test to correctly identify all those who have the disease (true positive rate). A test with high sensitivity will have a minimum number of false negative results.
Specificity, on the other hand, measures the ability of a test to correctly identify those who do not have the disease (true negative rate).
57563
Oral PathologyHypercalcemia is commonly seen in hyperparathyroidism.
36216
Oral medicineMalherbe's epithelioma, also known as calcifying epithelioma, is typically a benign tumor that is more common in children and young adults rather than adults. It is characterized by solitary, hard tumors that are often found on the neck, face, and arms. The other options accurately describe the characteristics of Malherbe's epithelioma.