WHAT IS A PARONYCHIA. This is an infected ingrown nail. This is generally the result of an ingrown nail piercing the surrounding flesh, bacteria gets into the opening and it becomes infected.
Medical Definition of REFLEX ARC. : the complete nervous path that is involved in a reflex.eflex arc. noun. : the complete nervous path that is involved in a reflex.
An involuntary response or action to a stimulus. Reflexes are specific and predictable and are usually purposeful and adaptive. They depend on an intact neural pathway between the stimulation point and a responding organ. This pathway is called the reflex arc.