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Smooth sustained contraction due to rapid stimuli refers to a sustained muscle contraction that occurs in response to a series of quick, successive stimuli without a complete relaxation phase between them. This phenomenon, often seen in smooth muscle tissue, results in a prolonged state of contraction, allowing for functions such as vasoconstriction or peristalsis in the digestive tract. The rapid stimuli lead to an accumulation of calcium ions within the muscle cells, enhancing the contractile response. This type of contraction is essential for maintaining continuous muscle tone and function in various physiological processes.
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What is a rapid repetitive series of threshold stimuli leading to a single fused sustained contraction?
Sumation of contraction
A rapid repetitive series of threshold stimuli leading to a single fused sustained contraction is A summation of stimuli B treppe C tetanus D sumation of contraction?
a. summation of stimuli
When a muscle is stimulated prior to full relaxation of a previous contraction and the second stimuli is added to the first contraction it is referred to as?
When a muscle is stimulated before it has fully relaxed from a previous contraction, and the second stimulus adds to the force of the first contraction, this phenomenon is referred to as "twitch summation." This results in a stronger overall contraction due to the increased calcium ion availability and the cumulative effect of the stimuli on the muscle fibers. If the stimuli continue to occur in rapid succession, it can lead to a sustained contraction known as "tetanus."
Which muscles can produce tetanus?
Tetanus can occur in skeletal muscles, which are responsible for voluntary movements in the body. When a muscle receives a rapid series of stimuli without sufficient time to relax, it can enter a state of sustained contraction known as tetanus. This is particularly observable in muscles such as the biceps and quadriceps during intense physical activity. Smooth and cardiac muscles can also exhibit sustained contractions, but the term "tetanus" is most commonly associated with skeletal muscles.
When weak but smooth muscle contraction is desired a few motor units are stimulated at a?
rapid rate
When a weak but smooth muscle contraction is desired blank are stimulated at a rapid rate?
few motor units :)
Skeletal muscle twitch differs from a tetanic contraction in that?
Skeletal muscle twitch is a single, brief contraction and relaxation cycle, whereas a tetanic contraction involves sustained, rapid repeated contractions without relaxation in between. Tetanic contractions occur when the muscle is stimulated at a high frequency, leading to a fused contraction.
What type of muscle is capable of rapid contraction and causes skeletal movement?
Skeletal or voluntary muscle is capable of rapid contraction and is responsible for skeletal movement.
Substance P role in digestion?
Substance P is a 11 amino-acids peptide which belongs to the tachykinins, a family of peptide which induces a rapid contraction of the smooth muscle of the digestive tract
Do reflexes that are rapid predictable and automatic respond to stimuli?
true
What is needed to accomplish a strong contraction and are stimulated at a rapid rate?
To accomplish a strong contraction that is stimulated at a rapid rate, the muscle fibers need sufficient ATP for energy production, calcium ions for muscle contraction, and acetylcholine for nerve stimulation. Additionally, a well-coordinated activation of motor units is necessary to achieve a strong and rapid contraction.
What is the side effect of doxapram?
Hyperreflexia (severe rapid tonic contraction of body).
