0
Does the ECG record the electrical stimulation of cardiac muscle by conduction system?
Wiki User
∙ 10y ago
Yes, the ECG records the electrical stimulation of the heart muscle by the conduction system and traces the movement of those impulses.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
How does the PNS affect the organs of the body?
With regard to specific target organs and tissues, parasympathetic stimulation acts to decrease heart rate and decrease the force of contraction. Parasympathetic stimulation also reduces the conduction velocity of cardiac muscle fibers.
Which type of muscle CANNOT contract without being stimulated by the nervous system?
Cardiac muscle. Unlike skeletal and smooth muscle, the contraction of cardiac muscle is involuntary and requires stimulation from the nervous system. This ensures that the contractions of the heart are synchronized and coordinated.
What cells make up the myocardium?
Most of the myocardium is composed of cardiac myocytes.
What are the properties of cardiac cells?
Cardiac muscle is a striated, involuntary muscle. Cardiac muscle cells usually contain 1 or 2 nuclei.
What type of tissue makes up nonconducting skeleton of the heart?
Muscular
Is Cardiac muscle stimulation neural?
No, but skeletal muscle is.
Fibers of the cardiac conduction system are what kind of specalized tissue?
Muscle ( cardiac Muscle)
What muscle can contract without the need for the nervous stimulation?
Smooth & cardiac muscle.
How does the PNS affect the organs of the body?
With regard to specific target organs and tissues, parasympathetic stimulation acts to decrease heart rate and decrease the force of contraction. Parasympathetic stimulation also reduces the conduction velocity of cardiac muscle fibers.
What types of muscle tissue can depolarize spontaneously in the absence of any external stimulation?
cardiac muscle and smooth muscle?
What is automaticity of the heart?
The property that allows any cell in the cardiac muscle to begin an action potential, or a cardiac conduction, leading to cardiac contraction.
Does cardiac electrical activity immediately precede the contraction of the cardiac muscle?
Yes
Does the heart beat without extrinsic stimulation from the autonomic nervous system?
Yes. The cardiac muscle beats with an intrinsic rhythm. This permits the heart to beat without extrinsic stimulation. The heart begins its rhythm and continues its rhythm, basically until something interrupts it. Interconnecting cardiac muscle tissue which is specially designed to continue the rhythm of the heart's contraction creates the heart's system of conduction. These strands of cardiac muscle tissue keep the heart beating in the rhythm that it begins with without interruption through coordinating action. The cardiac cycle refers to the process which fills and empties the individual chambers of the heart. The system of the heart's conduction enables this cycle to continue without interruption.
How the heart is controlled?
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.
Where do cardiac muscle fibers remain between cardiac cycles with no detectable electrical changes?
It remains Polarized.
What is the electrical charge transmitted along the muscle cell membrane after stimulation?
Tonus
Does transcutaneous electrical nerve stimulation help with muscle and joint pain?
Yes
