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Neuroscience

Any of the sciences that deal with the functions of the human nervous system and brain -- perception, memory, consciousness and learning.

500 Questions

Why the eye interprets the image as erect when the image produced is real and inverted?

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Asked by Wiki User

The interpretation of the image as erect by the eye is due to the brain's ability to process visual information. The brain has learned to associate specific visual cues with upright objects, allowing it to perceive the image as erect even if the image produced on the retina is inverted. This is known as visual perception and is a result of the brain's processing and interpretation of visual stimuli.

Where is Phineas gauge's skull?

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Asked by Wiki User

Phineas Gage's skull is currently held at the Warren Anatomical Museum at Harvard University in Boston, Massachusetts.

Does hypercalcemia cause depression of the nervous system?

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Asked by Wiki User

Yes, hypercalcemia (high levels of calcium in the blood) can cause depression of the nervous system. Excess calcium can interfere with the normal functioning of nerve cells, leading to symptoms such as confusion, fatigue, weakness, muscle aches, and depression. Treatment involves addressing the underlying cause and restoring calcium levels to normal range.

What is the branching fiber that is the first part of the neuron to receive a nervous system impulse called?

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Asked by Wiki User

The branching fiber that is the first part of the neuron to receive a nervous system impulse is called a dendrite. Dendrites receive signals from other neurons or sensory receptors and transmit these signals to the cell body of the neuron. They play a crucial role in receiving and integrating incoming information in the nervous system.

When your hit in the head do you damage the neurons in your brain or the axons?

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Asked by Wiki User

When you are hit in the head, both neurons and axons can sustain damage. Neurons are the specialized cells responsible for transmitting electrical signals in the brain, while axons are long, slender projections that extend from neurons and transmit those signals to other neurons or tissues. Impact to the head can cause direct damage to neurons and axons, leading to functional impairment or cell death.

After ACh attaches to its receptors at the neuromuscular junction the next step is?

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Asked by Wiki User

the depolarization of the muscle cell. This occurs when the ACh receptors open, allowing sodium ions to enter the muscle cell, which leads to the generation of an action potential. The action potential then propagates along the muscle cell, initiating contraction.

What does the endocrine system include?

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Asked by Wiki User

The endocrine system includes all the glands in the body that produce and secrete hormones, such as the pituitary gland, thyroid gland, adrenal glands, pancreas, and ovaries or testes. These hormones help regulate various functions in the body, including growth, metabolism, reproduction, and response to stress.

Why is inhibition so important at the level of a single neuron?

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Asked by Wiki User

Inhibition is important at the level of a single neuron because it helps regulate and control the neuron's firing activity. Inhibition can prevent excessive firing and prevent neurons from becoming overly activated. It also helps shape the overall activity and information processing of neural networks.

Is a association neuron unipolar?

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Asked by Wiki User

No, an association neuron (also known as an interneuron) is not unipolar. Unipolar neurons have a single process extending from the cell body, while association neurons have multiple processes (dendrites and axons). Association neurons are responsible for connecting sensory and motor neurons in the central nervous system.

What is sub threshold Depolarization of nerves?

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Asked by Wiki User

Subthreshold depolarization refers to a small increase in the membrane potential of a nerve cell that does not reach the threshold for generating an action potential. It is a graded response that occurs when the membrane potential of the nerve cell approaches but does not exceed the threshold for firing an action potential. Subthreshold depolarizations can summate or integrate within the cell to reach the threshold and trigger an action potential.

What happens when presynaptic cell's produce action potentials?

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Asked by Wiki User

When presynaptic cells produce action potentials, it triggers the opening of voltage-gated calcium channels in the presynaptic membrane. This influx of calcium ions into the presynaptic cell triggers the release of neurotransmitter molecules from small, membrane-bound vesicles. The released neurotransmitters then diffuse across the synapse and bind to receptors on the postsynaptic cell, generating a response in the postsynaptic cell.

How much does it cost to become a neurologist?

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Asked by Wiki User

Neurologist median salary is $85.85 per hour. The lowest 10% earn $70 per hour and those in the upper 10% earn more than $100 per hour.

On an annual basis Neurologists earn $178,564. The lowest 10% earn less than $150,000 per year while the upper 10% earn more than $208,000 per year. These salaries are calculated as a mean or average. Some sites report salaries as high as $300,000 for the more successful neurologist.

What transport mechanism is used to prevent to movement of sodium ions into the cell when it is at resting potential?

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Asked by Wiki User

Passive transport - i.e., "leaky conductance" provided by NLCN channels for example.

What kinds of stimuli can elicit action potential?

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Asked by Wiki User

Electrical , heat and chemical stimuli

What causes someone to fall blackout and start shaking?

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Asked by Tanya1126

The symptoms you describe sound like a seizure or fit. This may be caused by epilepsy, a head injury, drug (mis)use, excess alcohol, stress, sleep deprivation or poisoning amongst other things.

EMERGENCY ASSISTANCE SHOULD BE SOUGHT IN THE FOLLOWING CIRCUMSTANCES:

  • The seizure lasts for longer than five minutes
  • If the person does not regain consciousness after the seizure
  • If the person has a second seizure without regaining consciousness from the first
  • If it is a person whom you know has never had a seizure before
  • If they injure themselves during the seizure
  • Or if you believe the person needs urgent medical attention.

You should not try to restrain someone who is undergoing a seizure and you must not try to place anything in their mouth. You should not attempt to move them unless they are in a position where they may be in danger (such as in or near a road).

It is however recommended that you cushion their head (if they are on the ground), loosen any tight clothing, especially around the neck, remove any objects from the area that the person may injure themselves on and that once the seizure has finished you lay them on their side and ideally place them in the recovery position. It is also recommended that you stay with the person until they have fully recovered and explain to them what has happened as they may not remember.

Please see the related links for further information.

What releases when the sympathetic nervous system responds to a decrease in glomerular filtration rate?

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Asked by Wiki User

Increased sympathetic activity causes the afferent arterioles of the renal glomerulus to constrict, thereby reducing blood flow into the glomerulus. Because a decrease in blood flow reduces blood pressure in the glomerulus, which is the driving force for filtration, GFR decreases.

Why are nerve cells shaped the way they are?

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Asked by Wiki User

Nerve cells are so long and branched out because they need more surface area to pass out the signals.
They are long and Branching because they have to get all over your body, and to do that they must be long and branched to reach other cells. Also the cells are like a highway so the have to branch of to go to different places.
They hav long branching shapes because it connects on place to another

What is the relationship between a neurone and a nerve?

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Asked by Wiki User

neuron = cell body + dendrites + axons

nerve = axon + schwann cells (peripheral nervous system only)

equivalent term of nerve in the central nervous system is called tracts

neuron is a type of cell

nerve is an anatomical term

In myelinated axons where are the voltage gated sodium channels concentrated?

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Asked by Wiki User

In myelinated axons, the voltage gated sodium ions are located along the nodes of Ranvier, the exposed places between the myelin segments. The gates here, however, are not particularly more concentrated than on other un-myelinated axons.

TRUE

What neurons does the nervous system repair?

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Asked by Wiki User

Yoga is the body abel to repair damage to the parts of the nervous system

What is the parts of an sensory neuron?

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Asked by Wiki User

affrent , efferent, and inerneurons