The endocrine component of the pancreas consists of islet cells (islets of Langerhans) that create and release important hormones directly into the bloodstream. Two of the main pancreatic hormones are insulin, which acts to lower blood sugar, and glucagon, which acts to raise blood sugar.
Variability is a measure of the spread of a data set. Learn more about the different measures of variability including the range, variance, and standard deviation, and how they are used in the field of Psychology.
Heart Rate Variability (HRV) refers to the different measurements that can be derived from the intervals between normal heart beats on a continuous ECG recordings. Analysis of Heart Rate Variability (HRV) and other ECG-based analyses provide information about the functioning of the cardiac autonomic nervous system.