NEET MDS Shorts
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NEETMDS
Facilitated diffusion is a type of passive transport, meaning it does not require energy (ATP). It involves the movement of substances down their concentration gradient with the help of specific carrier proteins or channel proteins embedded in the cell membrane.
Creatine phosphate is involved in providing energy for muscle contraction, not facilitated diffusion.
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NEETMDSIn a case of sporadic ataxia, common lab investigations include checking for vitamin E, vitamin B1 (thiamine), and TSH levels to rule out treatable causes like vitamin deficiencies or thyroid disorders. Serum folate testing is not a standard investigation for sporadic ataxia.
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Physiology
The sympathetic nervous system primarily uses norepinephrine (also known as noradrenaline) as its neurotransmitter. It is released from the synaptic terminals of postganglionic sympathetic fibers and acts on adrenergic receptors, which are found on various target cells throughout the body. This neurotransmitter is essential for the body's "fight or flight" response, contributing to increased heart rate, dilated pupils, and other physiological changes associated with stress or emergency situations.
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PeriodonticsThe procedure least successful in resolving a periodontally related osseous defect is the reattachment procedure.
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PedodonticsThree-wall defects most frequently occur in the interdental area.
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Oral SurgeryTo luxate a tooth with forceps, the movements should be firm and deliberate primarily to the facial surface with secondary movements to the lingual surface.
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Oral SurgeryPatients under steroid therapy requiring extraction of infected teeth need antibiotic premedication. Chronic steroid use suppresses immune function, increasing infection risk and impairing wound healing. Prophylactic antibiotics help prevent post-operative infections and complications in these immunocompromised patients, especially when extracting already infected teeth.
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Oral PathologyAnalgesics are not effective in reducing pain in trigeminal neuralgia.
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OrthodonticsThe lymphoid system, which includes lymph nodes, spleen, and other lymphatic tissues, undergoes significant growth during childhood. By the age of 9-10 years, the lymphoid tissue can reach approximately 200% of its adult size due to the increased demand for immune function during this period. This growth is part of the body's preparation for increased exposure to pathogens as children interact more with their environment.
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General Medicine
The sudden onset of pain, abdominal distension, and constipation with the presence of dilated loops of bowel and air-fluid levels on X-ray are indicative of small bowel obstruction.