Fasciculation
a localized, uncontrollable twitching of a single muscle group enervated by a single motor neuron
Fibrillation
rapid chaotic beating of the heart muscle in which the affected heart may stop pumping blood
Fistula
an abnormal passage from an internal body organ to the outside of the body
Fistulated
having an abnormal passage between an internal organ and the surface of the body or between two internal organs
Flaccid
weakness or paralysis and reduced muscle tone without obvious cause
Flaccid paralysis
an abnormal condition of weakness or loss of muscle tone
Flatulence
expulsion through the rectum of a mixture of gases that are the byproducts of the digestive process of animals
Fomite
nonliving materials that may transit microorganisms