Consider the following axons: W has an internal diameter of…
Consider the following axons: W has an internal diameter of 100 microns and is unmyelinated; X has an internal diameter of 100 microns and is myelinated; Y has an internal diameter of 50 microns and is myelinated; Z has an internal diameter of 50 microns and is unmyelinated. Which of the following neurons described above has the fastest rate of action potential propagation?
Read DetailsVO2 max (a “gold standard” measurement and indicator of card…
VO2 max (a “gold standard” measurement and indicator of cardiorespiratory fitness) is the biggest predictor of cardiovascular related morbidity and mortality and a leading cause of all cause mortality with aging. Your cardiac output is the biggest contributor to VO2 max. What is a physiological mechanism that may contribute to reduced cardiac output and VO2 max that is seen with aging?
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