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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.
3,047 Questions
How is myelin formed within the central nervous system?
The glial cells that surround the neurons produce myelin.
What are the two functions of the nervous system?
In very general terms the functions are Sensation via the afferent fibres and Control (of movements) via the efferent fibres.
What is the Impulse generator and transmitter in the nervous system?
In the nervous system axons generate and transmit impulses.
the parasympathetic nervous system
Does the addition of ether to the nerve cause any permanent alteration on neural response?
No, it has no lasting effect because it impairs the ability of nerve fibers to function (blocks nerve transmission).
How does the somatic and autonomic system work together?
i don't know i wanted to answer the question dumb
How is age linked to presbycusis?
age-related hearing loss. a difficulty in hearing high-frequency sound such as people talking. A senior has less trouble with low-frequency tones. affects approximately 25% of people between the ages of 65 and 75 and half of those over 75.
What nervous system functions independently and continuously?
The autonomic nervous system, which is the one that keeps your heart and lungs functioning without your conscious effort or control.
Ganglion
What does it mean if you have no reflex in one arm?
It can be a indicator of some other medical conditions. Like, myopathy, neuropathy, spondylosis, sensory nerve disease, neuritis, or a potential lower motor neurone lesion.
What are the parts and functions of integumentary system?
The two main parts of the integumentary system is the epidermis and the dermis. There are also a number of accessory parts such as hair, glands, nerve receptors, etc. The functions of the integumentary system are mostly to protect the underlying tissues but also aids in heat regulation, waste excretion, and vitamin D production.
Consequence of sensory nerve fibers crossing over?
brain is confused as to which side of the body it is supposed to control b/c nerves are twisted
What are the types of dislocation bones?
you can not dislocate a bone. Joints can be dislocated. some of you act as if you don't have a brain in your head.
How does the sympathetic nervous system contribute to manintaining homeostasis?
In short, stimulation of the sympathetic branch of the autonomic nervous system prepares the body for emergencies: for "fight or flight". This system allows for these reactions to occur with out upsetting the balance of the human body. It increases activity that is necessary to the "fight or flight" response(ex: blood pressure, heart rate, and adrenaline) and decreases activity that is unnecessary (ex: salivation and digestion)
Caffeine reverses memory impairment in Alzheimer's mice
New studies show caffeine markedly reduced the hallmark protein for Alzheimer's disease in the brains and blood of the mice
IMAGE: Caffeine treatment removed the beta amyloid plaques from the brains of the Alzheimer's mice.
Tampa, FL (July 5, 2009) - Coffee drinkers may have another reason to pour that extra cup.
When aged mice bred to develop symptoms of Alzheimer's disease were given caffeine - the equivalent of five cups of coffee a day - their memory impairment was reversed, report University of South Florida researchers at the Florida Alzheimer's Disease Research Center.
from http://www.todaysseniorsnetwork.com/caffine_reverses_memory_loss_aged_mice.htm
What is the basic unit of the nervous system?
the basic functional unit of the nervous system is the neuron.
The body monitors the level of carbon dioxide in the blood to determine what action is needed in connection with involuntary breathing.
