Latrotoxin, produced by the poisonous black widow spider, increases the release of acetylcholine. how do muscle cells respond?

Latrotoxin produced by widow spider affects muscle nerve endings. This toxin forms pores on the membrane of the cell. As a consequence, an influx of Ca+ ions occurs and bursts of the neurotransmitter acetylcholine (Ach) are released. Ach induces an increase in neuromuscular activity that leads to painful skeletal muscle spasms and later even paralysis.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.