A child ingested an organophosphate poison used to kill insects. Soon the child's muscles began spastic contractions. Predict what occurred at the synaptic cleft
A. decreased release of acetylcholine from presynaptic neurons
B. increased accumulation of acetylcholine in the synapse
C. the poison binds to acetylcholine receptors and stimulates them
D. increased breakdown of acetylcholine in the synaptic cleft
E. Both increased accumulation of acetylcholine in the synapse and increased breakdown of acetylcholine in the synaptic cleft.
B
You might also like to view...
If a substance has a pH that is greater than 7, it is
A) neutral. B) acidic. C) alkaline. D) a buffer. E) a salt.
Low ________ means that it is more difficult to expand the lungs.
A. potential B. impression C. compliance D. gradient
What type of chemical bond forms when electrons are shared unequally between two atoms?
What will be an ideal response?
Given these components of a reflex arc:
1. effector organ 2. interneuron 3. motor neuron 4. sensory neuron 5. sensory receptor A) 5,4,3,2,1 B) 5,4,2,3,1 C) 5,3,4,1,2 D) 5,2,4,3,1 E) 5,3,2,1,4