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.
The reflex arc is the nerve pathway that the signal follows. For example, the knee jerk reflex arc has a stimulus going to an interneuron in the spine and a motor neuron compl â¦ etes the arc by causing the knee to jerk. A reflex is just the action itself.he somatic reflex arc is a neural circuit that travels through the spinal cord. It allows the body to respond to the stimulus before the brain interprets the message/ impulse â¦ . For example, when you burn yourself, you automatically pull your hand away without even thinking about it.