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stimulus that results in no perceptile contraction
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What condition causes increasingly stronger contraction owing to increased stimulus strength?
Treppe
What is second stimulus before relaxation causes increased force called?
Contraction phase
The way an organism reacts to a stimulus often results in what?
movement
Which movement results after the contraction of the serratus anterior muscle?
scapular protraction and rotation
What are the evolutionary advantages of a sign stimulus?
A sign stimulus is a simple features of a more complex stimuli that produced predictable results of an organism. The bright plumage and magnificent tail of a peacock is a good example of a sign stimulus as it helps the peacock to attract a peahen.
What is a stimulus that results in no perceptible contration?
subthreshold stimulus
What is the definition of a submaximal stimulus?
Submaximal Stimulus results in complete contraction of some fibers. It causes contraction more than subminimal stimulus and less than maximal stimulus.
What is the minimal level of stimulus to cause a muscle contraction?
it is known as the threshold stimulus usually seen in tonic contraction
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.
What is the first phase after a stimulus in a muscle contraction?
Latent Phase
What does not act as a stimulus to initiate a muscle contraction?
a change of temperature.
What is an aftercontraction?
An aftercontraction is a contraction of a muscle some time after a stimulus has ceased.
What type of contraction represented by a single stimulus and relaxation sequence?
Twitch
The minimum stimulus needed to cause a contraction is called the?
threshold stimulus
Where are the cells that initiate the stimulus for contraction of the heart muscle located?
SA node
What is the minimal stimulus needed to elicit a muscle contraction is called?
Threshold Stimulation
What is the minimal intensity of stimulation necessary to trigger a muscle contraction?
threshold stimulus
