How Does Latroxin, the Venom of the Black Widow Spider

question 56

Multiple Choice

How does latroxin, the venom of the black widow spider, cause muscle spasms and rigidity?

• A) It stimulates acetylcholine release from autonomic preganglionic neurons.
• B) It inhibits acetylcholine release from motor neurons.
• C) It stimulates acetylcholine release from motor neurons.
• D) It inhibits the degradation of acetylcholine at all synapses.
• E) It blocks nicotinic cholinergic receptors.

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Definitions:

Classical Conditioning

A method of learning where, through continuous pairing, a reaction initially induced by a second stimulus comes to be provoked by the first stimulus instead.

Extinction

In psychology, the gradual weakening and disappearance of a conditioned response when the conditioned stimulus is repeatedly presented without the unconditioned stimulus.

Discrimination

Discriminatory actions or attitudes against people belonging to distinct categories, mainly due to factors like ethnicity, age, or sexual orientation.

Classical Conditioning

A learning process that occurs through associations between an environmental stimulus and a naturally occurring stimulus, famously demonstrated by Ivan Pavlov's experiments with dogs.