Home myasthenia gravis what is it? pfizer viagra buy online no prescription Causes symptoms diagnosis treatments history patient support chat facilities bulletin boards events newsletters experiences lifestyle famous people resources links research library fundraising membership donations sponsors news about us contact us disclaimer it is a condition of entry to this site that you read the disclaimer above. pfizer viagra buy online no prescription © 2004 - all material is copyright all rights reserved what is myasthenia gravis? Myasthenia gravis (mg) is a neuromuscular autoimmune disease that affects the use of muscles - normal communication between the nerve and the muscle is interrupted, leaving the muscle weak and fatigued. is viagra available over the counter in spain An autoimmune disease is one where the body's immune system appears to attack healthy tissue and produces so many antibodies (immune blood proteins that recognise and fight infections and other foreign things in the body) that the healthy tissue becomes damaged. viagra women equivalent With mg, it is the voluntary (striated) muscles that are weakened. overnight usa order viagra online Voluntary muscles are the muscles that we can control, where the message is transmitted via our nervous system to contract the muscle. buy viagra without prescription They are the muscles in our legs, our arms and our neck; those that move the eyeball and keep the eyelids open; some of those involved with facial expression, and those involving chewing, swallowing and breathing. generic viagra online Mg does not affect bowel and bladder function or the myasthenic's mental capacity. viagra for daily use vs. 36-hour viagra Nor is it restricted to humans! viagra canada online For a muscle to contract, the chemical acetylcholine normally transmits nerve impulses to muscle fibres at the place where the nerve and muscle connect (the neuromuscular junction). cost of viagra per pill The physical weakness of the myasthenic's muscle is caused by a defect at this neuromuscular junction. buy generic viagra However, whilst the he myasthenic has a problem with the transmission of nerve impulses to the muscle, the nerves and muscles themselves may remain normal. Research has shown that most myasthenics form abnormal antibodies against the acetylcholine receptor (sites at which the chemical can be received on the surface of the muscle). order viagra The number of acetylcholine receptors in a myasthenic is reduced due to an attack on the receptors by the body's immune system - if receptors are missing, the response of the mu.