I just did it and got it correct the answer is inside the circle which is the first one. Good luck on the questions.
Potassium is 10 to 20 times higher inside the cell, and sodium is 10 to 20 times higher outside the cell. The potential difference across the cell is important in several processes such as transmission of nerve impulses and maintain the ion balance.
The sodium concentration higher out side and potassium higher inside the cell then it moves two potassium into the cell where potassium levels are high and pump three sodium ions out of the cell and into the extracellular fluid.
This is due to action of membrane active transport system which pumps sodium out of the cell and potassium into it. Both helps in body maintain flid and blood volume so it can function normally.
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It follows that no other cell in the body performs a neuron's exact functions.
<h3>
What about neurons?</h3>
- Information is transmitted via neurons.
- They communicate between various brain regions and between the brain and the rest of the nervous system through electrical impulses and chemical signals.
- The basic building blocks of the brain and nervous system are neurons (also known as neurones or nerve cells).
- The cells known as neurons are responsible for receiving sensory data from the outside world, sending commands to our muscles, and converting and relaying electrical signals at various points along the road.
- The bulk of neurons in vertebrates are found in the central nervous system, however some are found in peripheral ganglia and many sensory neurons are found in sensory organs like the retina and ear.
- A neuron is made up of a cell body, which includes a nucleus and cytoplasm, from which long, thin portions that resemble hair grow.
- The neuron's lone long component, known as the axon, is responsible for carrying nerve impulses to various body areas.
- Dendrites are the short, branching components of the neuron.
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