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The motor nerve cells control the skeletal muscle
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∙ 15y ago
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∙ 8y agoNerve impulses to skeletal muscles cause them to respond.
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∙ 14y agoyes a nerve impulse is transmitted from the brain to the muscle. This is by a series of neurons from the specific potion of the brain to the effector organ.
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∙ 13y ago=motor neurones (nerves)=
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∙ 14y agoneurons
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∙ 12y agomyelination
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What is the significance of the skeletal muscle fiber triad relationship?
The T tubules conduct electrical impulses that stimulate calcium release from the sarcoplasmic reticulum.
What is the multinucleate muscle fiber?
Skeletal
What is the function of End Plates?
A motor endplate is a large special synaptic contact between motor axons and each skeletal muscle fiber. Each muscle fiber forms one endplate. Its function is to transmit impulses from nerves to muscles.
What is the function of motor end plate?
A motor endplate is a large special synaptic contact between motor axons and each skeletal muscle fiber. Each muscle fiber forms one endplate. Its function is to transmit impulses from nerves to muscles.
What are the structures within the muscle fiber that shorten to cause skeletal muscle fiber contraction?
Myofibrils
What is the primary role of muscle spindles?
the striated portions of the intrafusal fiber contract to keep the spindle taut at different muscle lengths. If the whole muscle is stretched, the muscle spindle is also stretched, triggering sensory nerve impulses on its nerve fiber. These sensory fibers synapse in the spinal chord with lower motor neurons leading back to the same muscle. Impulses triggered by stretch of the muscle spindle contract the skeletal muscle.
How relaxation in a skeletal muscle fiber occurs?
Relaxation of a skeletal muscle usually involves the Golgi tendon proprioceptors.
Most skeletal muscles contain?
muscle fiber
A specialized cell found in a skeletal muscle is called a muscle fiber?
true
What is the muscle fiber or gland cell that responds to the efferent impulses?
Effector
The cytoplasm of a skeletal muscle fiber is called the?
Sarcoplasm
What are the repeating segments seen in skeletal muscle fiber?
sarcomeres
