answersLogoWhite

0

Nerves

Nerves are thread-like structures that form a network of pathways that transmit information from the brain to the body and the body to the brain, in the form of electrical impulses.

1,605 Questions

Where would you find a neuron?

You would find the axon in the nervous system loves.

What nervous system made up?

The nervous system is the control system and the network of communication for the body. The nervous system is made up of nerves, the spinal cord and the brain. The nerves control everything we do; they carry messages that tell us to move, to breathe, to feel and to think. Nerves run to the muscles, organs, heart, lungs, blood vessels, brain--even to our teeth and skin. There are two sets of nerves: the central nervous system and the peripheral (outside) nervous system.

Which area of the skin has the most sensory nerve endings?

the answer i found was the foot. sorry if i am wrong.
Another place to consider is the fold of the arm. If you have someone touch your arm while you are looking and then have them without you looking touch several places on your are it is difficult to know when they return to the exact place they originally touched. You do have nerves in your arms but the endings are few.

What does a nerve cell look like?

The biggest and most important hing to remember is that plant and animal cells look very different from one anther. The major thing to look for when distinguishing the looks of cells is to look for a cell wall and a central vacuole.

Does the Vulcan nerve pinch actually work?

Yes. If you were to study the art of Ryukyu-Kempo, you would discover that the body is full of pressure points that can be exploited to immobilize, knock-out and even kill a person. There are two points that correspond to the position of the fingers in the nerve pinch. For more information on Ryukyu-kempo, follow this link http://en.wikipedia.org/wiki/Ryukyu_Kempo

Do plants react to electrical impulse?

AnswerPlants have a certain amount of water or sap in them and could possibly

conduct electricity.

IN ADDITION:

When lightning strikes the top of a tree and the lightning makes its way all the way to the ground, I would definitely say yes they do.

A synapse consist of?

A synapse is the connection between two neurons. It consists of the synaptic cleft (the physical gap between one neuron's axon and the other's dendrite). Neurotransmitters cross the gap from the axon to the dendrite and affect whether the next neuron fires.

When the action potential reaches the terminal end of the pre-synaptic neuron how does it continue?

the impulse is transmitted by either neurons or sensory or effector organs.impulse is nothing but the stimulation for an part of body to carry out specific actions.generally impulses are transmitted very faster by neurons that too mylenated neurons.when an impulse is transmitted across a neuron or organ it gets polarised.due to unknown mechanism the axon terminals present at the end of axon release special type of transmitters called neurotransmitters into the gap present in between 2 neurons or a neuron and organ.these examples of neurotransmitters are GABA,acetylcholase,epinephrine ,nor epinephrine etc.these help in transmitting impulses from one to another.these get diffused into gap from axon terminals and helps in transmission.after the impulse is transmitted these again gets inactivated or taken back into axon terminals.these are inactivated by special enzymes.hence these are very important in nervous system for impulse transmission .

What is the point at which a nerve impulse is sent from one nerve cell to another?

It diffuses across a small gap called a synapse between the two nerve cells. It is passed as a neurotransmitter (in chemical sacs). They reach the end of one cell and the impulse is converted into neurotransmitters, which are released from that cell, diffuse across the gap, and land on the receptor site, where they are converted back into electrical impulses.

How many dendrite are in a bipolar neuron?

All the cells in the human body, including the nerve cells, have 46 chromosomes (23 pairs) (except the sperms and egg cells, which have 23 chromosomes each).

Where neuron cell bodies located?

The cell body, called the SOMA, is the main part of the neuron. It is the main metabolic center or region of the neuron.

The neuron has 3 parts: DENDRITES (inputs), SOMA (cell body), and AXON (output). The axon is the part which FIRES when sufficient inputs reach it at the axon hillock.

What is unique about nerve cells?

Nerve cells, or neurons, are unique in that they are specialized to transmit electrical and chemical signals throughout the body. They have long projections called dendrites and axons that allow them to communicate with other neurons and muscle cells. Additionally, neurons have a high metabolic rate and cannot divide, making them more susceptible to damage and disease.

What is the classification of a neuron when the cell body is located in the CNS and the primary function is connecting other neurons?

A synapse connects one neuron to another (and a neuron to a muscle cell).

The axon hillock at the 'end' of the neuron cell body (soma) initiates a firing of the axon of a neuron.

An axon terminal at the end of an axon is the first part of a synapse.

If this didn't answer your intended question, please compose it better.

Where is the motor neuron cell located?

Motor neuron cells are located within the central nervous system (CNS), specifically in the spinal cord and brain. They are responsible for transmitting signals from the brain to muscles and glands to control movements and various bodily functions.

Are nerve fibers in ascending tracts myelinated?

If I was paying attention in med school, I think... The pre-ganglionic fibers are myelinated and the post-ganglionic are unmyelinated. This is in reference to the sympathetic and parasympathetic systems.

What part of neuron that receive a signals from other neurons?

Yes. They interact with each other via chemical "signals" called neurotransmitters and neuropeptides. In this way, a neuron sends an excitatory (stimulating) or inhibitory (destimulating) signal to another neuron to cause it to generate a nerve impulse or prevent it from generating one, respectively.

When the nerve impulse encounters a myelin-covered section of neuron?

When the nerve impulse encounters a myelin-covered section of a neuron, it jumps between the nodes of Ranvier, allowing for faster transmission speed due to saltatory conduction. Myelin acts as an insulator, preventing the impulse from dissipating and increasing the efficiency of signal transmission along the neuron.

What is the location for sensory neurons?

They can be found in the dorsal root ganglia, retina, peripheral vestibular organs, cochlea, and enteric nervous system. Then there are second order sensory neurons in the brain that form the basis of the 'sensory homonculus'.

How many neurons does the cerebellum have?

How many neurons does the cerebellum have?

This is an interesting question. Of the sources I have reviewed thus far, I have not found a consistent approximation of neurons in the cerebellum.

The human brain has (estimate) 100 billion neurons. Some sources say 10-100 billion. According to Wikipedia, the cerebellum takes up 10% of the brain's total volume and contains roughly 50% of all the neurons in the brain. In that case, 50 billion neurons in the cerebellum.

However, in the book I'm currently reading, it has suggested that the cerebellum neuron count is more like 70 billion. Therefore, the cerebrum (rest of the brain) has the remaining 30%.

Interesting isn't it? Such a small structure contains majority of the brain's neurons. Additionally, the cerebellum has Purkinje cells, which are among the largest neurons in the brain. According to Wikipedia, Granule cells (very tiny neurons) are very numerous in the cerebellum which are accountable for the mass % of neurons in this particular cortex.

Hope I have helped you! However, take note that to some people Wikipedia is not a valid source. To me it's reliable in some circumstances. The book I'm reading now was written by an M.D so I feel that is more reliable, so I'll go ahead and say that the cerebellum has (estimate) 60-70 billion neurons.

What is released from an axonal nerve ending?

Chemicals called neurotransmitters are employed in the relay, amplification, and modulation of electrical impulses between neuronal cells. Vesicles found at the pre-synaptic knob of axon terminals discharge them.

What does a sensory neurons do?

Sensory neurons are nerves that take in information from either the outside world, or from within the body itself. Sensory neurons communicate this information to the brain which then issues a response. Sensory nerves take in and communicate information about heat, cold, pressure, pain, position and more.

detect, feel, and smell