Colorado CNA Practice Exam 2025 – The All-In-One Guide to Master Your Certification!

The correct answer is that maintaining blood sugar levels is indeed a function of the endocrine system. The endocrine system is responsible for producing hormones that regulate various bodily functions, including metabolism. One key hormone involved in blood sugar regulation is insulin, produced by the pancreas. Insulin helps to lower blood sugar levels by facilitating the uptake of glucose into the cells, thereby maintaining a stable level of sugar in the bloodstream. This function is crucial for energy balance and overall metabolic health.

In contrast, the other options pertain to different systems or functions. The nervous system primarily facilitates movement and communication throughout the body, while the respiratory system deals with breathing and oxygen exchange. Support for the skeletal framework is a function primarily associated with the muscular and skeletal systems. Each of these systems plays distinct roles, highlighting the specific and vital function of the endocrine system in maintaining blood sugar levels.