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.
Â©2011 SweetWater Health, LLC â¢ All rights reserved 2 What is Heart Rate Variability? (And Why Should I Care?) Heart Rate Variability HRV is the variation in the time interval between one heartbeat and the next. When we think of our heart rate, we generally think of a number between 60 and 90 beats per minute.This number represents the range for the average heart rate. In fact, your heart rate changes from beat to beat.2011 SweetWater Health, LLC â¢ All rights reserved 2 What is Heart Rate Variability? (And Why Should I Care?) Heart Rate Variability HRV is the variation in the time interval between one heartbeat and the next. When we think of our heart rate, we generally think of a number between 60 and 90 beats per minute.