NEET MDS Shorts
72264
Oral SurgerySerum sickness is a type III hypersensitivity reaction that typically occurs 7 to 21 days (1 to 3 weeks) after initial exposure to the offending antigen, which is the time required for the immune system to produce antibodies that form immune complexes with the antigen.
74192
OrthodonticsSlow progression in molar uprighting can occur if the occlusion is not adequately relieved. If the opposing teeth are still in contact, it can hinder the movement of the molar being uprighted.
91355
Pharmacology
Beta-1 selective blockers
These include atenolol and metoprolol (as well as betaxolol, bevantolol, and perhaps esmolol).
Non-selective beta blockers
propranolol
81167
Oral PathologyYellowish discoloration of teeth in children fed on tetracyclines is common.
83943
Oral SurgeryKoplik's spots are a pathognomonic sign of measles. They are small, white spots with a bluish-white center found on the buccal mucosa (inside of the cheeks) and are typically seen before the onset of the characteristic measles rash.
56062
Physiology
The primary mechanism for sodium reabsorption in the distal tubules and collecting ducts is sodium-hydrogen exchange, which occurs through the NHE3 transporter. This allows for the reclamation of sodium while maintaining the acid-base balance by exchanging sodium for hydrogen ions, which are then secreted into the tubular lumen.
51733
MedicineA lesion of the Meyer's loop (the anterior and inferior portion of the optic radiation in the temporal lobe) causes a superior quadrantic hemianopia because these fibers carry information from the superior visual fields of both eyes
84932
General Medicine
Parathyroid hormone (PTH) is the primary hormone involved in the regulation of phosphate homeostasis. It acts to increase serum calcium levels and decrease serum phosphate levels by promoting calcium reabsorption and phosphate excretion in the kidneys and stimulating the release of calcium from bones.
99182
PhysiologyIn the presence of intrinsic factor, vitamin B12 combines in the stomach to prevent its degradation by gastric acid, ensuring its availability for absorption.
24916
Oral and Maxillofacial SurgeryNylon sutures are commonly used in various surgical procedures, particularly in skin closures and surgeries that require minimal tissue reaction, making them versatile and effective in different contexts.