Act as an MBBS Pharmacology examiner. for Central nervous System drug , generate a comprehensive, structured exam answer in a pdf format . Organize it exactly under these headings:Classification with prototype drugsDetailed Mechanism of Action (cellular & physiological level)Pharmacological Actions (organ-system wise)Therapeutic Uses (with specific clinical conditions)Adverse Drug Reactions (classified by common and serious/idiosyncratic)Contraindications (with brief physiological reasons why)." Sedative-Hypnotics SN 1. Benzodiazepines - why preferred over Barbiturates*** as sedative and hypnotic agents, four uses; Barbiturates - classification 2. Benzodiazepines and Barbiturates - compare and contrast LAQ 1. Sedative and Hypnotic Drugs - classify, Benzodiazepines over Barbiturates - advantages, Benzodiazepines - MOA, therapeutic uses Antiepileptic Drugs LAQ 1. Antiepileptic Drugs****** - classify***** (on basis of clinical utility with examples; on basis of MOA), Phenytoin*** - MOA**, uses*, adverse effects**, Status Epilepticus - outline management; Sodium Valproate** - MOA**, adverse effects** therapeutic uses*; important drug interactions; Principles of Treatment of Epilepsy - enumerate; Grand Mal Epilepsy/GTCS* - enlist drugs*, Carbamazepine - MOA, adverse effect, therapeutic uses Antiparkinsonian Drugs SN 1. Levodopa and Carbidopa combination in Parkinsonism* - two advantages* and disadvantages*; Parkinsonism - drugs used LAQ 1. Antiparkinsonian Drugs - classify, Levodopa wirh Carbidopa - rationale of use Antipsychotic and Antimanic Drugs SN 1. Atypical Antipsychotics - enumerate, advantages over older neuroleptics Antidepressant and Antianxiety Drugs SN 1. Selective Serotonin Reuptake Inhibitors 2. Antianxiety Drugs - name, MOA LAQ 1. Antidepressants - classify, SSRI - therapeutic uses, adverse effects Opioid Analgesics and Antagonists SN 1. Pethidine over Morphine - advantages 2. Morphine* and other Opioids - uses* (four), Why is Morphine contraindicated in Head Injury; Acute Morphine Poisoning - treatment 3. Opioids and NSAIDS - major differences depending on MOA, uses, adverse drug reactions 4. Opioid Antagonists* - classify*, therapeutic uses* LAQ 1. Opium Alkaloids - enumerate, Morphine - MOA, adverse effects, clinical uses