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What Type Of Muscle Cells Contract In Response To Environmental Stimulation?
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What muscle can contract without the need for the nervous stimulation?
Smooth & cardiac muscle.
Weak stimulation of a motor neuron causes the muscle to what?
contract weakly
What kind of muscle cell contract?
Smooth muscle cells contract in response to fluid flow.
What is a graded muscle response?
It is the variation of stimulation needed in skeletal muscle contraction in order to have controlled movement.
Does skeletal muscle need stimulation to contract?
Yes! Although we have total control over these muscles, they still need stimulation to contract. The difference with muscles that we don't control is that we decide if we want to make this stimulation.
Why curare reduces the response to nerve stimulation?
Curare reduces the response to nerve stimulation because it acts as a neuro-muscular blocking agent, or muscle relaxant. It is also known as tubocurarine.
Muscle fibers contract and relax in response to what?
nerve impulses
What causes the pupils to dilate in someone who is excited or frightened?
sympathetic stimulation causes the dilator muscle to contract and sphincter muscle to relax, as a result expanding the pupil.
Skeletal muscles need nerve stimulation for contraction to occur?
Yes, they need nervous system stimulation to move. A person who has been in an accident and cut or damaged nerves to some muscles can not move those. A person who has had polio can have the same damage. The same goes for people with MS.
What detects a muscle is under stretch and therefore initiates the inverse stretch flex?
the muscle spindle detects excessive stretch within the muscle , it response and makes the muscle contract
How does the frequency of stimulation affect the amount of force generated by the muscle?
Increasing the stimulus to an isolated muscle increases the strength of a contraction. A muscle begins to contract when the stimulus is given; however, if the muscle does not finish contracting before the next stimulus hits, then the force of the contraction will increase to finish the contraction. This is known as wave summation.
Is Cardiac muscle stimulation neural?
No, but skeletal muscle is.
