What Is a Paronychia (Nail Infection)? An infection that develops along the edge of the fingernail or toenail is called a paronychia (pear-ah-NIK-ee-ah). It is the most common hand infection and, if left untreated, can progress to a more severe infection of the entire finger or toe.
reflex action. the involuntary functioning or movement of any organ or body part in response to a particular stimulus. The function or action occurs immediately, without the involvement of the will or consciousness. reflex action.
Describe the components of a reflex arc. 1  Reflexes, or reflex actions, are involuntary, almost instantaneous movements in response to a specific stimulus.  Reflex arcs which contain only two neurons, a sensory and a motor neuron, are considered monosynaptic.