Calcium
Yes, an ECG records the electrical activity produced by the heart as it contracts and relaxes. This includes the electrical stimulation of the cardiac muscle by the conduction system, such as the SA node, AV node, and Purkinje fibers.
Vagus nerve stimulation can decrease heart rate by inhibiting the electrical activity of the heart's pacemaker cells, which are responsible for setting the heart rate. This can be therapeutic in conditions where a slower heart rate is beneficial, such as in certain cases of epilepsy or heart failure.
Vagus nerve stimulation is used to treat conditions such as epilepsy, depression, and migraines by sending electrical impulses to the vagus nerve to help regulate brain activity and mood. It can also help with reducing inflammation and improving heart function.
Olfactory stimulation can trigger various physiological effects, such as changes in heart rate, blood pressure, and respiratory rate. It can also influence mood, memory, and cognitive function, as well as impact on appetite and cravings. Additionally, certain scents can activate the release of hormones and neurotransmitters in the brain, affecting overall well-being and behavior.
Heart muscles has there own rhythm of contraction. The sinoatrial node has the fastest rate of contraction. That is why it governs the rhythm of the heart. You have the control of the autonomic nervous system over the heart rate. Stimulation of the sympathetic nervous system increase the heart rate. Stimulation of the parasympathetic nervous system decrease the heart rate.
Autoconduction is the heart's ability to generate its own electrical singnal rhythumically without neural stimulation.
Yes, an ECG records the electrical activity produced by the heart as it contracts and relaxes. This includes the electrical stimulation of the cardiac muscle by the conduction system, such as the SA node, AV node, and Purkinje fibers.
Ventricular tachycardia is an abnormal heart rhythm in which the heart beats rapidly due to electrical stimulation coming from the ventricle.
Yes there absolutely is. To put it in it's most basic terms, the heart has electricity running through it. When you get an EKG at the cardiologists office, those lines are measures of the electrical activity of the heart. The pacemaker fires an electrical impulse when it detects that heart did not fire an electrical impulse on its own. By adding electricity via electrical muscle stimulation, you will run the very high risk of confusing the pacemaker. Just don't do it.
H. J. J. Wellens has written: 'Electrical stimulation of the heart in the study and treatment of tachycardias' -- subject(s): Electric stimulation, Tachycardia, Therapy, electrophysiology, extrastimulus technique, heart
Vagus nerve stimulation can decrease heart rate by inhibiting the electrical activity of the heart's pacemaker cells, which are responsible for setting the heart rate. This can be therapeutic in conditions where a slower heart rate is beneficial, such as in certain cases of epilepsy or heart failure.
It is controlled by an electrical conduction system special to the heart that allows a impulse begun by the sinoatrial node (SA node) to be propagated throughout the cardiac muscle. The heart contracts after stimulation but in an ordered stimulation that allows efficient contraction of the heart. The atrium contract first and then the ventricles after a short pause.
The brain can influence the heart in two ways. Sympathetic and parasympathetic stimulation. Parasympathetic stimulation of the heart is through the vagus nerve. Sympathetic stimulation of the heart is via cervical and thoracic splanchnic nerves. The heart has its own pacemaker cells, so the brain only changes the rate and contractility of the heart.
increase its rate and force of contraction
Excessive vagal stimulation can be overcome by engaging in activities that increase sympathetic tone, such as exercise or deep breathing. In severe cases, medications like atropine can be used to block the effects of excessive vagal stimulation on the heart.
The movement of electrical impulses in the heart coordinates the contraction of its chambers. The impulses initiate the contraction by stimulating the muscle cells, causing them to contract in a coordinated way. This results in the rhythmic pumping action that drives blood flow through the heart and to the rest of the body.
Your heart is able to independently contract without nerve stimulation. However, frequency of these contractions if the heart was not innervated at all would roughly be 100 beats per minute. A resting individual does not need his or her heart to beat that fast to adequately supply blood to the rest of the body. So when at rest the vagus nerve (the branch innervating the heart) kicks in and slows these contractions down so as not to waste energy.