it is known as the threshold stimulus
usually seen in tonic contraction
The minimum stimulus needed to cause a contraction is called the threshold stimulus. This is the minimal level of stimulation required to activate muscle fibers and initiate a contraction response.
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.
A subthreshold stimulus is one that does not generate a strong enough signal to elicit a perceptible contraction in muscle fibers. It is below the threshold required to cause an action potential and result in muscle contraction.
When a weak stimulus is applied to a muscle fiber, only a few motor units are recruited to contract. This results in a partial muscle contraction where not all muscle fibers are activated. Stronger stimuli recruit more motor units, leading to a full muscle contraction.
Threshold stimulusThe minimal level of stimulation required to cause a fiber to contract is called the THRESHOLD STILULUS.
no, lactic acid does
It can cause vascular smooth muscle contraction
The eccentric muscle contraction is most likely to cause discomfort in q5.
No, contraction of the dartos muscle causes wrinkling of the scrotal skin to regulate temperature, but it does not directly cause elevation of the testes. Elevation of the testes is primarily controlled by the cremaster muscle.
The heart muscle is different from smooth and skeletal muscles because it does not require a nerve to cause it to contract. The heart has it's own built in conduction system that cause's the automatic contraction and relaxation that is required for circulation. Smooth and Skeletal muscle whether it uses voluntary or involuntary muscle contraction all have innervation to cause the contraction. Sara, RN
In the myoneural junction.
Asthma causes contraction of the bronchial smooth muscle.