Curare poisoning paralyzes its victims by blocking ACh receptors involved in muscle movements. Morphine mimics endorphin actions.Which is an agonist, and which is an antagonist?

When the researchers instead used tissue from intestinal musclesrather than brains, they found no naloxone binding. What doesthat suggest about opiate receptors in mammalian muscle?

Malathion is an insecticide commonly used in the horticultural industry. Many homeowners apply this chemical to their trees to rid them of infestation by aphids or other insects. Malathion is classified as an organophosphate insecticide. Exposure to malathion is very dangerous to humans and animals because it acts as an irreversible inhibitor of acetylcholinesterase. Predict what might happen to synaptic communication between cholinergic neurons if an individual or animal was poisoned with malathion, and clearly describe the mechanisms at work.

Label the following on the graph: 100 100 1000 10000 Dose Partial agonist Choose... Antagonist Choose... C Agonist Percent Effect