NEET MDS Shorts
60976
Oral SurgeryEpinephrine is not compatible with general anesthetic agents that sensitize the myocardium to catecholamines, increasing the risk of cardiac arrhythmias. Halothane and cyclopropane are known to have this effect, making their combined use with epinephrine contraindicated.
58891
Physiology
Answer: 1) Contraction
Explanation: Norepinephrine acts on alpha-adrenergic receptors on the pupillary dilator muscle, causing its contraction and pupil dilatation (mydriasis). This is part of the sympathetic nervous system's response to stress and increased alertness during the fight-or-flight response.
56760
NEETMDS
Lacrimation during mastication, often referred to as Bogorad/s syndrome or "crocodile tears," is caused by aberrant regeneration of the auriculotemporal nerve after injury, usually due to trauma or surgery involving the parotid gland. The regenerated parasympathetic fibers intended for the parotid gland mistakenly innervate the lacrimal gland, leading to tearing instead of salivation upon eating.
89037
INI CET
Tapping of the bone is performed in dense bone (Type 1 or 2) to create threads that match the implant. This reduces insertion torque and prevents bone necrosis. In softer bone, implants are typically self-tapping.
51953
INI CET
Extraction in irradiated bone carries a high risk of Osteoradionecrosis (ORN). RCT is preferred to manage the infection without surgical trauma to the bone.
55683
RadiologySalt-paper appearance is seen in intraoral periapical radiograph of thalassaemia.
53661
Physiology
While sleep spindles and K complexes are prominent in Stage 2 NREM sleep, they can also be present in the transition between wakefulness and sleep, which is considered part of Stage 1 NREM sleep.
54843
INI CET
Adrenaline (Epinephrine) acts on alpha-adrenergic receptors to cause potent vasoconstriction, effectively reducing blood flow to the extraction site to control hemorrhage.
53716
Dental Materials
The significance of the direction of the applied force during condensation is that it affects the marginal integrity and adaptation of the material to the cavity walls. It is important to direct the force at an appropriate angle to ensure proper condensation and seating of the material.
96426
Oral PathologyInfectious mononucleosis is characterized by ulcers that bruise easily.