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lubasha [3.4K]
3 years ago
14

Ep-24 what is the best way to avoid running aground

Biology
1 answer:
patriot [66]3 years ago
8 0

<span>The best way to avoid running aground is to ensure that you have a good understanding of your environment. This can be achieved by gaining familiarity with locations of shallow water and learning to read a chart to determine one’s position and the level of water</span>

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The conduction of nerve impulses relies upon the movement of positively-charged ions across the nerve cell membrane. The entry of sodium into the cell produces a wave of positive charge that travels down the length of an axon. Then chemicals called neurotransmitters are secreted out of the end of the axon onto the next nerve in the series (the postsynpatic nerve). This narrow space in between neurons is called the synapse. These neurotransmiiters released by the presynaptic nerve bind to receptors on the postsynaptic nerve. The binding of these receptors opens up channels in this second nerve's membrane that allow sodium ions to enter the nerve cell and initiate another wave of positive charge, and so on... The nerve signal can only move as fast as these ions and neurotransmitters can diffuse to generate this process. 

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<span>Additionally, there are sheaths of fatty tissue (called myelin) that insulate the charge in the neuron and allow it to be conducted faster. As people age, these sheaths can start to degrade, making the nerve cell more "leaky" and causing the impulse to be conducted more slowly. </span>
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Explanation:

From Google

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