The venom of a black widow spider causes neurons to release a flood of the neurotransmitter acetylcholine. this can cause:

Answer;

-Convulsions and possible death

Explanation;

-Acetylcholine is the neurotransmitter used at the neuromuscular junction, it is the chemical that motor neurons of the nervous system release in order to activate muscles.

-It's found in parts of the peripheral nervous system, spinal cord, and areas of the brain. In the peripheral nervous system, ACh activates muscles that help the body move. When Ach is released to the muscle cells, the muscle contracts.

-There are many problems that can occur if ACh is blocked (muscles can't contract). One example is the black widow spider which uses venom that causes a flood of ACh into muscle cells and results in violent, uncontrollable muscle contractions, paralysis, and death for it's prey.