Doctor insights on:
Why Does Epinephrine Increase Heart Rate
Binding receptors: Do you mean how does it increase heart rate? The mechanism of action is quite complicated but in simple term, it binds to the beta adrenergic receptors on the heart leading to changes in calcium level and increases in the firing rate of the pacemaker cells. ...Read moreSee 1 more doctor answer
Multiple factors: The natural response to stress of any kind is the release of the bodies stress chemicals, which include adrenalin, that speeds the heart to posh blood flow. Oxygen hunger can drive the stress response and an automatic increase in breathing rate to get more oxygen. ...Read moreSee 1 more doctor answer
What happens to cardiac output and after load when when heart rate is low? does it increase because high heart rate causes decrease in CO
Sneezing: Sneezing can cause a decreased venous return and tachycardia response. ...Read more
Maybe it does: When you eat a big meal, you divert blood to digestive tract where it's most needed. Your heart responds by pumping more blood. It has 2 ways to do this: increase its stroke volume and increase its rate. If you have heart disease and can't increase your sv, the rate will have to increase. If you're healthy, most likely your observations were random and not consistently reproducible. ...Read moreSee 1 more doctor answer
What happens if heart bit rate increases/decreases does performance level increases/decreases as well?
Bit rate?: I'm not familiar with the term "heart bit rate". If you mean "heart rate" - there are many factors related to performance. The heart rate will increase with increasing workload and when it reaches its physiological maximum, oxygen debt begins and performance quickly declines. ...Read more
It may not: There can be a small temporary decrease or increase in your heart rate immediately before or after a sneeze. This is not from the sneeze itself, but it is related to the deep breath taken before the sneeze or the sudden blowing out of air during the sneeze. These large changes in filling of one's lungs can change the pressure inside the chest, and briefly affect the heart rate. ...Read more
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