It depdends: There are many causes of toe spasms/cramps and it is important to identify the source. Cramps and spasms can be due to dehydration and low potassium. But they can also be due to a nerve conditions as well. I recommend you see a specialist for further evaluation. ...Read more.
1 The SA node (called the pacemaker of the heart) sends out an electrical impulse. 2  The upper heart chambers (atria) contract. 3  The AV node sends an impulse into the ventricles.  The lower heart chambers (ventricles) contract or pump.
The normal pacemaker of the heart is the -. Sinoatrial node: Which of the following supplies blood to parts of the intestinal tract? The phrenic arteries: When a person's pulse is taken by palpation near the thumb on the wrist, what artery is being felt? The radial artery: Mitral valve prolapse is a disorder of the heart in which the mitral valve -. bulges into the left atrium during ventricular contraction: The pain associated with the condition called angina pectoris usually is caused by an obstruction in an artery that supplies the -. heart (it's a heart attack) In an ECG pattern, the T wave is caused by -. repolarization of ventricular muscle fibers: The term used to describe an abnormally slow heart rate is -. bradycardia (tachycardia is an abnormally fast heart rate) Which of the following might serve as a secondary pacemaker for the heart? Both A-V node and Purkinje fibers Swelling of the tissues in the lower extremities is most likely to be caused by a failing -.