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Nervous System

This category is for questions about the mechanical and chemical process of reactions to internal and external stimuli, ranging from the brain down to the spinal cord, and all nerves, cells and tissues in between.

500 Questions

Is the autonomic nervous system?

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Asked by Wiki User

The autonomic nervous system that controls the functions within the body. Some functions that it controls are the heartbeat, digestive system, and breathing. The autonomic nervous system is the part of the peripheral nervous system that acts as a control system. It functions largely below the level of consciousness to control visceral functions.

Are sense organs part of the peripheral nervous system or the central nervous system?

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Asked by Wiki User

Sense organs are part of the peripheral nervous system. They detect stimuli from the environment and send signals to the central nervous system for processing and response.

What vitamin is required for the synthesis of rhodopsin?

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Asked by Wiki User

Vitamin A is required for the synthesis of rhodopsin, a light-sensitive pigment found in the rods of the retina. Rhodopsin is crucial for low-light vision and helps our eyes adjust to changes in light levels. A deficiency in vitamin A can lead to vision problems, particularly night blindness.

What is true about the peripheral nervous system?

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Asked by Wiki User

The peripheral nervous system is responsible for transmitting information between the central nervous system and the rest of the body. It includes sensory and motor neurons that control voluntary and involuntary movements. It is comprised of nerves located outside of the brain and spinal cord.

What type of ion channel opens on the synaptic end bulb in response to depolarisation?

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Asked by Wiki User

Voltage-gated calcium channels open on the synaptic end bulb in response to depolarization. These channels allow calcium ions to enter the cell, triggering the release of neurotransmitters into the synaptic cleft.

What nervous system cell act as phagocytes within the central nervous system?

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Asked by Wiki User

Microglial cells act as phagocytes in the central nervous system. They help to remove pathogens, waste products, and dead cells to maintain a healthy environment in the brain and spinal cord.

What is the main link between the nervous system and endocrine system?

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Asked by Wiki User

ganglionAnswerThe most straight-forward answer would be the hypothalamus, because in simple terms, the hypothalamus controls the pituitary gland and the pituitary gland is the "master gland" of the endocrine system. But you could probably have a nice long discussion about what exactly counts as a link between the nervous and endocrine systems. Is it a functional link? A structural one? Does the question force the answerer to draw an arbitrary line dividing organs of the nervous and endocrine systems?

What is the 12 pairs of peripheral nerves that branch out from the brain?

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Asked by Wiki User

The 12 pairs of peripheral nerves that branch out from the brain are the olfactory nerve, optic nerve, oculomotor nerve, trochlear nerve, trigeminal nerve, abducens nerve, facial nerve, vestibulocochlear nerve, glossopharyngeal nerve, vagus nerve, accessory nerve, and hypoglossal nerve.

Can a computer be set to read your brain waves?

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Asked by Wiki User

Yes, it is possible to use technology such as electroencephalography (EEG) to measure and interpret brain waves through a computer. This technology is commonly used in research, medical diagnostics, and neurofeedback applications.

What is vestibular schwannoma?

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Asked by Wiki User

Vestibular schwannoma, also known as acoustic neuroma, is a non-cancerous tumor that develops on the nerve responsible for balance and hearing, called the vestibulocochlear nerve. Symptoms can include hearing loss, tinnitus, imbalance, and in severe cases, facial weakness or numbness. Treatment options may include observation, radiation therapy, or surgical removal of the tumor.

What tissue are in the nervous system?

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Asked by Wiki User

the brain,spinal cord and the nerves

What part of the nervous system would be immediately activated if you were attacked by a mugger?

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Asked by Wiki User

Sympathetic nervous system, triggering the "fight or flight" response to help you respond to the threat. This activation leads to increased heart rate, dilated pupils, and heightened awareness to prepare the body to defend itself or escape the danger.

What accomplishes the transmission of the nerve signal across the synapse?

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Asked by Wiki User

Neurotransmitters are released from the presynaptic neuron and cross the synaptic cleft to bind to receptors on the postsynaptic neuron, allowing the nerve signal to be transmitted. This process enables the electrical signal in the presynaptic neuron to be converted into a chemical signal in the synaptic cleft and then back into an electrical signal in the postsynaptic neuron.

How do natural systems move toward entropy?

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Asked by Wiki User

Natural systems tend to move toward entropy by increasing disorder and randomness over time. This is driven by the second law of thermodynamics, which states that the entropy of a closed system will always increase. As energy is transformed and transferred within a system, it tends to spread out and become less organized.

How do the kidneys react to sympathetic nervous system stimulation?

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Asked by GaleEncyofNeuroDis

Stimulation of the sympathetic nervous system causes the kidneys to constrict blood vessels, reducing blood flow to the kidneys. This can lead to a decrease in urine production and help conserve body fluids in times of stress or emergency. Additionally, the sympathetic nervous system can stimulate the release of renin, an enzyme involved in blood pressure regulation.

Describe peripheral nervous system damage due to whiplash?

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Asked by GaleEncyofNeuroDis

Whiplash can lead to damage in the peripheral nervous system, causing symptoms such as pain, tingling, and numbness in the affected areas. Nerve compression or stretching during the injury can result in dysfunction of the nerves, leading to sensory and motor abnormalities in the body parts innervated by those affected nerves. Physical therapy and pain management techniques are often used to alleviate symptoms and promote nerve healing.

Reflexes are not carried to the brain?

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Asked by Wiki User

Reflexes are actually carried to the brain through sensory neurons that send signals to the spinal cord. The spinal cord processes the incoming sensory information and coordinates a quick response, sometimes without direct involvement of the brain. This allows for rapid reflex actions to occur without the need for conscious thought.

What kind of cell perform the main function of the nervous system?

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Asked by Wiki User

Neurons are the main cells that perform the function of transmitting electrical and chemical signals in the nervous system. They are specialized for communicating signals between different parts of the body.

Who Invented The Transcutaneous Electrical Nerve Stimulation?

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Asked by Wiki User

Transcutaneous Electrical Nerve Stimulation (TENS) was invented by a neurosurgeon named Shealy in the United States during the 1960s. He developed TENS as a non-invasive pain relief therapy that uses electrical current to stimulate nerves for pain relief.

What effect does age have on your sensitivity to various smell?

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Asked by Wiki User

As you age, your sense of smell can become weaker, making it harder to detect and distinguish between different odors. This decrease in sensitivity is due to changes in the olfactory system and a reduction in the number of olfactory receptors in the nose. Older adults may also experience a decline in their ability to identify and remember smells accurately.

What is the anatomical position of the lacrimal gland with respect to the eye?

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Asked by Wiki User

The lacrimal gland is located superior and lateral to the eye within the orbit. It is situated near the outer canthus of the eye and is responsible for producing tears that lubricate and protect the eye.

What is the pathway that the lacrimal gland takes from the surface of the eye?

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Asked by Wiki User

Tears are produced by the lacrimal gland located at the outer corner of the eye. The tears flow across the surface of the eye and drain into tiny openings called puncta located at the inner corner of the eyelids. From there, tears travel through the lacrimal canaliculi, the lacrimal sac, and finally into the nasolacrimal duct which empties into the nose.

Does the parasympathetic nervous system increase or decrease BP?

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Asked by Wiki User

The parasympathetic nervous system decreases blood pressure by promoting relaxation and decreasing heart rate. It counters the effects of the sympathetic nervous system, which increases blood pressure.

What fiber transmits impulses to the central nervous system?

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Asked by Dnic

The fiber that transmits impulses to the central nervous system is called an afferent or sensory fiber. These fibers carry sensory information from receptors in the body to the brain and spinal cord, allowing for the perception of different sensations like touch, temperature, and pain.

Why is chemical signaling between cells better than nervous signaling?

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Asked by Wiki User

Chemical signaling between cells is advantageous because it allows for communication between distant cells and tissues. This form of signaling is also slower and more sustained than nervous signaling, making it suitable for coordinating long-term processes such as growth and development. Additionally, chemical signals can be released systemically throughout the body to affect multiple cell types simultaneously.