Physiology 1021 Lecture Notes - Lecture 18: Motor Neuron, Choline, Pulmonary Artery

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Ca voltage gated channels have a crucial role to allow neurotransmitter release- yes, becasuse ca goes back to the axon ends. Ach is one of the neurotransmitters which are used by motor neruons yes , acetyl colin is the only neurotransmitter. Epp can produce muscle contraction (end plate potential)- false, epp cannot induce any muscle contraction, you need epp to let sodim ions come in to the cell. 1 ap on the motor neuron might be lead to an ap in the muscle side. Ach is broken down by ach-ase to choline and acetate and these components pumped to blood circulation false because this pumps back to the synaptic clef. Ach (acytle choline) braking down in necessary for muscle relaxation false the muscle will start to contract. Ap is crucial for releasing ca from sr true. T-tubules are continuation of plasma membrane true. Ca bind to tropomyosin to roll off myosin binding sites false ca binds to troponin.

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