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.
arc noun [ C ] (CURVE) âº 1  the shape of part of a circle, or other curved line. âº 2  a powerful flow of electricity that goes across a space between two points. âº [ 3  I ] to move in the shape of an arc. âº [  I usually + adv/prep ] to make an electric arc.