What Is Cardiac Action Potential? What is Electrical Stimulation? What is the Sinus Node? What Is an Atrial Natriuretic Factor? What is Cardiac Rhythm Management? What is a Recovery Heart Rate? Discussion Comments WiseGeek, in your inbox
What is the cardiac notch? Lung Gross Anatomy: The lungs are two paired organs in the thoracic cavity of humans. The right lungs is made up of three different lobes, and the left lung is made up on only two. Answer and Explanation: ...
The ventricular action potential is a unique specimen in that it does not require a stimulus to fire. This characteristic is unique to the heart as the entire cardiac contraction is dependent on controlling nodes, which fire in intervals, causing action potentials to travel throughout the organ. ...
The cardiac muscle is very strong and resistant to fatigue, as it must work constantly throughout an organism's life. The average human heart contracts 70 times per minute to circulate blood through the body's blood vessels. The action potential, the electrochemical wave, responsible for the he...
@boathugger: It’s called action potential. The contractions of the cardiac muscle are triggered in a different way than the contraction of the skeletal muscle, which is caused by electrical impulses from nerve terminals located at the individual muscle fibers. ...
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Calcium channels play an integral role in excitation in the heart and shaping the cardiac action potential. In addition, calcium influx through calcium channels is responsible for initiating contraction. Abnormalities in calcium homeostasis underlie cardiac arrhythmia, contractile dysfunction and cardiac ...
What is the term for the period during systole when all heart valves are closed? What is the term for the period during diastole when the pressure in the atria exceeds the pressure in the ventricles? Define cardiac cycle. What occurs in the heart during the P-R inter...
What is the function of the action potential? What ions are in action potential? Define the following terms: a. Depolarization. b. Hyperpolarization. c. Graded potential. Define the following term: Potential energy What determines the strength of the initial depolarization relating to a graded pote...
Ketamine can cause dose-dependent increases in blood pressure, heart rate, and cardiac output, and may lead to hypertension, tachycardia, and arrhythmias; it should be used cautiously in patients with cardiovascular risks such as hypertension or cardiac disease.[1-4] Ketamine's cardiovascular ...