Answer:
A neuromuscular junction is a junction between a <em>nerve fiber</em> and a <em>muscle cell.</em>
Explanation:
<em>A neuromuscular junction (or myoneural junction) is a site of chemical communication between a nerve fiber and a muscle cell, is analogous to the synapse between two neurons. </em>
A motor neuron is able to transmit a signal to the muscle fiber, causing muscle contraction upon stimulation by a nerve impulse, the terminal releases the chemical neurotransmitter acetylcholine from synaptic vesicles binding to the receptors, the channels open, and sodium ions flow into the endplate, this initiates the end-plate potential, the electrical event that leads to contraction of the muscle fiber.
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Answer:
The 'Mole'
Explanation:
In the International Systems of Units i.e. SI, mole is the unit for the measurement of the amount of substances, or in simple terms the number of microscopic molecules or particles in a given sample is measured in mole. It is denoted by the symbol 'mol'.
If in a given sample there are 1 mole particles or molecule then it means that the total number of particles or molecules in that sample is equal to the Avogadro's number and this number has a value of . Mole is used as a measurement unit for various types of microscopic particles like atoms, molecules, ions electrons.
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