Final answer:
The resistance of skin decreases when it becomes moist due to the ionization of salts, which lowers resistance and enhances conductivity. Moist skin and internal body fluids have lower resistance, posing a higher risk during medical procedures that breach the skin.
Step-by-step explanation:
When dry skin becomes moist, its resistance decreases. This is because the presence of moisture allows salts to go into ion form, which significantly facilitates electrical conductivity. Consequently, the resistance of wet skin is much smaller compared to when it is dry. Moreover, the internal parts of the body have even lower resistance because of the ionic solutions and bodily fluids that they contain. If skin resistance is bypassed, for instance, by a medical procedure that breaks the skin, this can lead to a person being microshock sensitive, which underscores the importance of stringent electrical safety in medical settings.