CNS Pharmacology MCQ 1 with Answer
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- is a CNS depressant
- causes cerebral vasodilation
- reduces the acidity of gastric fluid secretion
- reduces plasma glucose level
- is a potent diuretic
The Correct option is E
Discussion
- Caffeine is a plant alkaloid, found in many plant species, where it acts as a natural pesticide.
- Caffeine increases alertness and attention spans.
- Quitting caffeine consumption causes withdrawal symptoms.
- Low Doses: 50-250mg/Caffeine (Oral Doses) Increase mental alertness, decrease drowsiness Lessen fatigue
- Larger Doses: 250-600mg/Caffeine Irritability, restlessness, tremor, insomnia, headache, palpitations and hyperesthesia GIT upset
- Large Doses: > 1000 mg Overt excitement, delirium and clonic seizures
- Cardiovascular System: Increase rate and force of the heart by directly stimulating myocardium (low doses) ,Tachycardia and arrhythmias at higher doses.
- Peripheral vasodilation
- Kidney: All xanthines are capable of producing some degree of diuresis in humans (Theophylline > Caffeine)
Category: Pharmacology Notes
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