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What does ach do at a neuromuscular junction?
ACh (acetylcholine) binds to receptors at the NMJ (neuromuscular junction) to induce contraction of muscle.
What enzyme removes ACh from receptors so stimulation of muscle cells cease?
ACh esterase, which breaks ACh down into an acetyl group and a choline group. This is then taken up by the neurone and some is reformed into ACh.
What chemical stimulates muscle contraction?
acetylcholine (ACh)
What kind of stimulus travels from the motor neuron to skeletal muscle?
ACh?
What chemical into the muscle cell membrane causes a temporary rush?
Acetylcholine (ACh)
What Neurotransmitter that activates skeletal muscle fibers?
Acetal Choline (ACh)
What is the purpose of muscle cells?
The purpose of the muscle cell is movement, support, help the heart pump and to heart and warmth\ by H.L
Which of 2 chemicals listed would be good skeletal muscle relaxant and why chemical A binds to and blocks ACh receptors of muscle cells and Chemical B floods the muscle cells cytoplasm with CA2 plus?
Chemical A would be the best muscle relaxant. Since the muscle relies on ACH as a stimulant, this chemical would inhibit communication between the muscle cell and the neuron thus making it not contract. While Chemical B would cause further contraction of the muscle since calcium is needed to help the myosin head to attach to the actin filliment which creates muscle contraction.
What causes depolarisation of sarcolemma of muscle fibre?
An incoming action potential to an alpha motor neuron causes acetylcholine (Ach)release at the end plate, Ach binds to Ach receptors on the sarcolemma causing a sodium influx which causes depolarization.
What Muscle extends in any movement?
None. Muscles only contracts. In order to extend, the muscle on the opposite movement has to contract. For example, the biceps help flex the elbow, but it does not extend the elbow; the triceps does that.
What enzyme has to be present for acetylcholine to be broken down so that the muscle fiber can relax?
Acetycholine esterase. It breaks down Ach in the skeletal muscle endplate.
What is a target movement?
A movement that targets one muscle or one section of a muscle.
