BCS0032 - Anatomy and Physiology: The Endocrine SystemWhen we accidentally touch something hot the heat sensation travels instantly along sensory nerves and the impulse to jerk our hand away travels instantly back along motor nerves. The nervous system coordinates these kinds of quick response actions. However, another type of coordination is required to regulate our metabolic activities, such as causing our heart to beat faster when we're afraid, which prepares us for quick action if necessary, or maintaining proper glucose levels in our blood, which requires monitoring 24 hours a day, day after day. This type of coordination is preformed by the endocrine system. | 
