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Coniction
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∙ 11y ago
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The cells in a phloem tube are connected end to?
phloem cells are connected end to end. So each one is connected to the other.
How does nerve cells communicate?
The nervous system is composed of more than 100 billion neurons connected to each other, through from few hundred to 2,00,000 nerve terminals of each nerve fibers. On one hand you have dendrites and other hand you have axon terminals connected to each other and target organs.Connections between nerve cells are called synapses. A wave of depolarization passes through nerve fibers from dendrite to axon and in synapses you have various type of neurotransmitters. And at muscle end you have motor end plate passing the impulse through neurotransmitters. And you have various types of sensory apparatuses, carrying the appropriate impulse to central nervous system
What is a specialization of a nerve cell?
Nerve cells have dendrites at the end. They have a long Cytoplasm to transmit nerve impulses for long distances.
What happen when 3 cells of 1.5V is connected to one end of wires then connected to small torch bulb?
Nothing, for electricity to flow there has to be a voltage difference, ie connected from one end of the cells to the bulb, AND from the other terminal of the bulb to the other end of the cells.
What is the special features of nerve cell?
Nerve cells have dendrites at the end. They have a long Cytoplasm to transmit nerve impulses for long distances.
What is the special features of a nerve cell?
Nerve cells have dendrites at the end. They have a long Cytoplasm to transmit nerve impulses for long distances.
What can go wrong if your nerve cells are not working?
Remember that there are nerve cells in the brain as well as the rest of the body. If they don't work, death will be the end result.
What substances are secreted at the end of each nerve cell?
neurotransmitter
Why does myelination create speed?
This question could probably be asked more clearly. Myelinization of a nerve fiber helps the nerve's signalpropagate more quickly. Think of the nerve cell as a length of wire, and the myelin as the rubber insulation on the wire. Each nerve cell allows an electrical signal to pass down it's axon. If there is insulation around the nerve (myelin) then the signal is contained within the nerve cell, and passes quickly to the end of the nerve cell. Demyelinated nerve cells do not have this insulation keeping the electrical signal in the cell; so the signal can travel to adjacent cells. The net effect is that the signal either never reaches the end of the intended axon (such as with multiple sclerosis), or the signal takes longer to get there. Some nerve cells (grey matter, for example) are not intended to be myelinated. These cells are designed to act without insulation, so either the signal is supposed to travel to adjacent cells, or it is supposed to take relatively longer to reach the end of the axon.
How does a nerve cell function in a human?
The function of a nerve cell is to carry messages around someones body. To adapt to their job, they're very long and are branched at each end. Nerve cells also receive, carry and pass electrical impulses through someones body.
What do motor nerve cells do?
Nerve cells are part of the nervous system in your body. The main role of a nerve cell is to pass information through the cells to other cells in your body to perform a function. For example, a nerve cell may transmit an electrical signal from one nerve to another in your body, and send it to the brain.
Do nerve cells and blood cells the same shape?
No - they have very different shapes in order to perform their specific functions. Nerve cells are long with branched 'dendrites' at the end. There are many different blood cells, one of which - red blood cells - are almost circular with an indent in the middle.
