0
What else can I help you with?
Skeletal muscle fiber is controlled by a motor neuron at a single?
Each muscle cell is only innervated by a single motor neuron, but each motor neuron innervates any number of muscle cells. When an action potential travels down the axon of an alpha motor neuron, it will depolarize several muscle cells at the same time, a phenomenon known as summation.
Does each skeletal muscle fiber has one neuromuscular junction?
Yes, each skeletal muscle fiber has one neuromuscular junction (NMJ) where a motor neuron connects to the muscle fiber. This junction is the site where the motor neuron releases neurotransmitters, specifically acetylcholine, to stimulate muscle contraction. While a single motor neuron can innervate multiple muscle fibers, each individual muscle fiber receives input from only one motor neuron at its NMJ.
What motor neuron and all the muscle fibers it innervates called?
the motor unit
What is a motor unit is made up of?
Motor neurons and the muscle fibers they transmit signals toA motor unit is a collection of muscle fibers that contract as a single functional unit when stimulated by an impulse from a motor neuron. The actual size can vary greatly, from many large muscle fibers in the quadriceps muscle group per motor unit to just a few muscle fibers in the muscles of the fingers per motor unit.
Is the neck muscle a skeletal muscle?
Yes, neck muscle is a skeletal muscle.There is no single neck muscle, however, all the muscles in the neck are skeletal.
The all-or-none law applies to skeletal muscle function at what level?
The all-or-none law applies to individual muscle fibers within a skeletal muscle. This means that when a muscle fiber is stimulated by a motor neuron, it will either contract maximally or not at all, depending on whether the stimulus reaches the threshold for activation.
Why is there less precise control over leg muscles over eye muscles?
many muscle fibers are controlled by a single motor neuron
Can a single motor neuron for synapses with just one muscle cell?
A single motor neuron will innervate many muscle cells
The response of a motor unit to a single action potential of its motor neuron is called?
The response of a motor unit to a single action potential of its motor neuron is called a muscle twitch. This involves the contraction of all the muscle fibers within the motor unit in response to the stimulation from the motor neuron.
What tissue has one nucleus?
Smooth muscle tissue has a single nucleus in each cell :)
The combination of a neuron and the muscle fibers it associates with is called?
The combination of a neuron and the muscle fibers it associates with is called a motor unit. Motor units work together to produce movement by having the neuron stimulate the muscle fibers it innervates to contract.
Does muscle tissue conduct nerve impulses from one neuron to another and coordinates body activity?
Muscle tissue cannot conduct nerve impulses from one neuron to the other. Moreover, skeletal muscle tissue cannot even pass impulses between themselves and they should be stimulated by single branches of neurons. However, cardiac muscle cells has the unique ability to conduct impulses between themselves through gap junctions.
