This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
In strychnine poisoning, convulsions occur because of the antagonist effects at receptors for: 
Select and explain. 
A. Aspaate, B. Glycine, C. GABA, D. Glutamate
B: Glycine
Answer: B: Glycine 
Explanation: (Ref: KDT 6/e p469) GABA is the principal inhibitory neurotransmitter in the brain and glycine is the inhibitory amino acid in the spinal cord. By antagonizing the glycine receptors, strychnine can result in convulsions and other stimulatory symptoms.