What is the relationship between the units cc and ml?

The correct understanding is that 1 cc (cubic centimeter) is indeed equal to 1 ml (milliliter). These units of measurement are often used interchangeably in practice, particularly in medical and scientific contexts. Both cc and ml measure volume, and their equivalence stems from the definition of these units in the metric system, where 1 milliliter is defined as the volume of a cube with sides of 1 centimeter. Therefore, when dealing with liquid measurements, you can confidently convert between cc and ml without any alterations in quantity. This equivalence is a fundamental concept in various fields, including pharmacology and medicine, where accurate liquid measurements are critical.