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23 year old male has severe face and arm muscle spasm, patient is infected…

- - - - Patient could had gotten his tattoo with a used and or dirty needle.
- - - - first, the action potential will arrive at the axon terminal, then the chemically-gated calcium channels open with the neurotransmitter, the ACh binds to the receptors, this causes depolarization, the calcium binds with troponin and moves tropomyosin to its active sites. The cross-bridge gets created and last ATP binds with myosin head, releasing the muscle contraction.
    - - Tow types of Summation are Temporal and spacial. In Temporal one neuron sends more that one message at once and in Spacial multiple neurons send several messages at once.