Review Questions Chapter 6 Answer Key

Review Questions Chapter 6 Answer Key - Review Questions...

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Sheet1 Page 1 Review Questions Chapter 6 Answer Key 1 A drug called strychnine, isolated from the seeds of a tree native to India and commonly used as rat poison, blocks the effects of glycine. Is strychnine an agonist or an antagonist of the glycine receptor? Strychnine is an antagonist of glycine at its receptor. 2 How does nerve gas cause respiratory paralysis? Nerve gases interfere with synaptic transmission at the neuromuscular junction by inhibiting AChE. Uninterrupted exposure to high concentrations of ACh for several seconds leads to a process called desensitization. In this process, transmitter-gated channels close despite the continued presence of ACh. Normally, the rapid destruction of ACh by AChE prevents desensitization. However, if AChE is inhibited by nerve gas, ACh receptors will be desensitizedand neuromuscular transmission will fail, causing respiratory paralysis. 3 Compare peptide and small-molecule neurotransmitters (amino acids and amines) with regard to synthesis and packaging into vesicles, and removal from the
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This homework help was uploaded on 04/03/2008 for the course NEUROBIOLO Fund Neuro taught by Professor Schjott during the Spring '08 term at Rutgers.

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Review Questions Chapter 6 Answer Key - Review Questions...

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