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2069 Unknown

After using transdermal nitroglycerin skin patches for 1 week, a patient with an 8-month history of chronic stable angina pectoris observes an increasing frequency of mild angina episodes during exertion. The patient has been conscientiously applying a new patch every morning immediately after removing the old one. The patient’s increased frequency of anginal attacks is most likely because of

AA sudden onset of vasospastic angina
BEngaging in vigorous exercise
CCellular tolerance to organic nitrates
DInduction of cytochrome P450 enzyme by nitroglycerin
Unknown
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2070 Unknown

A 50-year-old patient presented with attacks of the intractable nausea, vomiting and hiccups. Even after giving medication the attack didn’t subside. MRI head All of the following are true about the structure involved except: –

ABilaterally paired structure, located at the caudal limit of the floor of the fouh ventricle.
BChemoreceptive area that triggers vomiting in response to the presence of emetic substances in the blood
CAlong with nucleus tractus solitarius and the dorsal motor nucleus of the vagus, it makes up the so-called dorsal vagal complex
DPoorly vascularized structure with high permeability for circulating blood signals
Unknown
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