The sympathetic constricts so that local vasodilation is more effective in rerouting blood to muscles. The rest of the body still gets the required blood supply given that constriction is countered by higher pumping action and heart rate.
Haven't directly answered this
I found a recent literature review that is relevant to this:
"Gene-Environment Interactions in Schizophrenia: A Literature Review"
by Marah H. Wahbeh and Dimitrios Avramopoulos *Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
Academic Editor: Sarah Tosato
The answer by Bryan Krause is right on point from a system's perspective.
From a cardiology point of view, heart rate recovery (HRR) post-exercise has been a significant consideration in cardiopulmonary exercise testing (CPET) in recent years.
Put succinctly, heart rate is influenced by the sympathetic and parasympathetic nervous systems. Increased ...
I think most people would take exponential decay in a circumstance like this to be the null hypothesis. That is, if you had something not exponential decay, that would be curious and interesting and worth understanding better.
Exponential decay is a pretty fundamental concept in the universe in general and biology in particular.
So, the exponential decay ...
This is happening due to sodium channel inactivation. Some relevant sources:
https://www.st-andrews.ac.uk/~wjh/hh_model_intro/ (I guess this link is broken for some people? works fine for me as-is; see the links before and after instead, then)
In the ...