AIIMS 2018 Zoology Cannabinoids MCQ Question

Option A is correct because cannabinoids, such as those found in cannabis, can influence cardiovascular function by affecting heart rate and blood pressure through their action on the endocannabinoid system. Option B is incorrect as morphine is primarily an opioid analgesic that acts as a central nervous system (CNS) depressant, but it does not directly affect cardiovascular function. Option C is misleading; while cocaine does induce euphoria, it primarily acts as a stimulant, increasing heart rate and blood pressure rather than having a direct cardiovascular effect like cannabinoids. Option D is incorrect because "smack" is a colloquial term for heroin, which is an opioid and does not produce psychedelic effects but rather depressant effects on the CNS.