Plasma is a) a liquid ground substance containing dissolved proteins. b) a dissolved ground matrix and a lining of epithelial cells. c) a liquefied ground substance that includes several dissolved cells. d) platelets, red blood cells, and white blood cells. e) platelets and a watery ground substance.
A normal resting heart rate can range anywhere from 40 to 100 beats per minute. Below is a chart relating resting heart rate and fitness level. As can be seen on this chart, your resting heart rate can vary with your fitness level and with age â the fitter you are, generally the lower the resting heart rate.
Normal resting heart rate has been reported to be between 60 to 100 beat per minute, although it is typically lower in aerobic athletes. Resting heart rate has been suggested to be a marker of training tolerance.stimates of maximal heart rate using the age-based prediction formula (220-age) exhibit relatively large standard deviations (â¥ 10 beats per minute) so age-based predictions should be used with caution.