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What is a small bundle of nerve tissue that produces an electrical stimulus which causes the ventricles of the heart to contract?
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An environmental stimulus acting on the body initially produces an electrical response called aan in the receptor neuron?
generator potential
In positive feedback the initial stimulus produces a response that the stimulus?
exagerrates the stimulus
What is the definition of maximal stimulus?
The maximal stimulus is the strongest stimulus that produces increased muscle contractile force.
When the initial stimulus produces a response that reinforces the stimulus the mechanism is called?
positive feedback
Any stimulus that produces stress?
Stressor
What is the definition of a neutral stimulus?
Neutral stimulus is a stimulus which initially produces no specific response other than focusing attention. In classical conditioning
The process of changing physical stimulus to neural stimulus is called what?
Transduction is the process of changing physical stimulus to natural stimulus. This causes receptor cells to produce an electrical change in response.
Learning that makes a reflex response to a stimulus other than the original natural stimulus that naturally produces the reflex?
classical conditioning
A weak stimulus can cause a muscle fiber to contract only partway?
yes
When an initial stimulus produces a response that exaggerates stimulus called what mechanism?
Exaggerating the stimulus is also seen as amplifying the stimulus. This is seen in outer ear hair cells.The mechanism you refer to is probably a positive feedback mechanism: more of the stimulus causes more of the stimulus. This is in contrast to a negative feedback mechanism, whereby more stimulus results in processes that strive to attenuate (lessen) that stimulus.
How does the threshold stimulus influence muscle contraction?
The threshold stimulus is the stimulus required to create an action potential. So any stimulus under this level will not cause muscle contraction, while a stimulus above this level will cause the muscle to contract. The higher the stimulus the more muscle fibers are recruited, and thus the higher the response.
When a previously neutral stimulus acquires the ability to elicit a response as a result of being paired with another stimulus that naturally or automatically produces the response?
This is known as classical conditioning, a type of learning where a neutral stimulus becomes associated with an unconditioned stimulus to elicit a response. The neutral stimulus eventually becomes a conditioned stimulus that triggers the same response.
