This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Hypertensive, Subject name: Pharmacology
[{'content': 'Which of the following is a L-type calcium channel blocker: \nSelect and explain. \nA. Nifedipines, B. Amlodipines, C. Diltiazem, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) All of the aboveRef. KDT 6th ed. / 528Types of Calcium Channel Blocker L-Type (long lasting current)T-type (transient current)N-Type (neuronal)Locations and function* Excitation -contraction coupling in cardiac and smooth muscle* SA, A-V node: conductivity* Endocrine cell: Hormone release* Neurons: transmitter release* Sa node- pacemaker activity* "T" current and repetitive spikes in thalamic and other neurons* Endocrine cells hormone release* Certain arteries constriction* Only on Neurons in CNS, sympathetic and myenteric plexuses transmitter releaseBlocker (drugs)Amlodipines, Nifedipine, diltiazem, verapamilMibefradil, flunarizine, ethosuximideo- conotoxin', 'role': 'assistant'}]