How does heartbeat originate? What can affect a heartbeat?

Question

Thanks in advance.

Answer 1

The first part of the heart that begins the electrical activity that will cause a heartbeat is the sinoatrial node (SA node) located in the septum of the right atrium. This is a special piece of muscle tissue that will self-depolarize. This is where a normal heartbeat originates. The SA node is called the "pacemaker" of the heart. Many things will affect a heartbeat, some include the origination of the heartbeat other then the SA node and this is called an ectopic heartbeat. Other things that will affect heartbeats are electrolyte balance, scar tissue of the heart muscle from prior heart attacks, hormone imbalances, stress, heartblock and many others.

Answer 2

without blood to be pumped into all the body parts, there will be no heartbeat. some factors that affect heartbeat:
1. the medicines that you take
2. the kind of body activities you have
3. your emotional state
4. some diseases
5. pollution
6. wines and liquiors

Answer 3

From an electronic signal from your brain. Many things can affect a heartbeat, diet, emotions,illness. on and on.

Answer 4

ok, let me see, i know that if you sneeze your heart will skip a beat...( its said to be the closest you come to dieing without needind medical help)....its fed, or charged by tiny electric impulses, which recieved by the heart at to high, or to low an amperage can either start or stop the heart....and it it also the one organ in the human body that , well for me... is full of so much love for my wife, that i think i can live forever , and ever just to be near her..... i hope this helped you ?

Answer 5

The cardiac muscles contract and expand thats what makes a 'beat'.