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What is responsible for conducting electrical impulses within the cardiac muscle?
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Why is it important for cardiac muscle cells to be branched and interconnected with other cardiac muscle cells?
so electrical impulses can be carried freely between cells
What carries cardiac impulses to the myocardium?
Cardiac impulses are carried to the myocardium via specialized muscle cells called Purkinje fibers. These fibers are part of the cardiac conduction system and help to transmit electrical signals rapidly and efficiently throughout the heart muscle.
What is the function of the intercalated disc?
Basically, the cardiac action potential travel across them, making it easier for the electrical impulses to move quickely.
What is electrocardiogram?
An electrocardiogram (ECG or EKG) is the display or record of the electrical activity of the heart. It picks up electrical impulses generated by the polarization and depolarization of cardiac tissue and translates into a waveform.
What tissue is specialized to conduct electrical impulses?
Nervous tissue is specialized to conduct electrical impulses in the body. It is made up of neurons that transmit signals by generating electrical impulses that travel along their length. These impulses allow for communication and coordination of activities in the body.
What is the difference between the liver cell and cardiac cell?
Liver cells, also known as hepatocytes, are primarily involved in metabolism, detoxification, and storage of nutrients. Cardiac cells, found in the heart, are specialized for generating and conducting electrical impulses to regulate heart contractions. Additionally, cardiac cells have intercalated discs that allow for synchronized contraction of the heart muscle, while liver cells do not possess this feature.
What impulses does a cardiac pacemaker use?
A cardiac pacemaker uses electric impulses to regulate a beating heart. Cardiac pacemakers are designed to treat various forms of arrhythmia (heart beat irregularities).
The S-A node which initiates each cardiac cycle and sets the pace for the heart rate is also known as?
The Sinoatrial (SA) node, also known as the pacemaker of the heart, is responsible for generating electrical impulses that initiate each cardiac cycle and determine the heart rate. It is located in the right atrium of the heart.
What sends electric currents to the heart causing it to beat at a steady pace?
The sinoatrial node, located in the right atrium of the heart, is responsible for generating electrical impulses that regulate the heart rhythm. These impulses travel through specialized pathways in the heart to coordinate muscle contractions and maintain a steady heartbeat.
Does the ECG record the electrical stimulation of cardiac muscle by conduction system?
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.
What establishes cardiac rhythm?
The cardiac rhythm is established by the sinoatrial (SA) node, which is the heart's natural pacemaker. The SA node generates electrical impulses that travel through the heart, coordinating the contraction and relaxation of the heart muscle to create a regular heartbeat.
What type of muscle would be considered autorhythmic?
Cardiac muscle is considered autorhythmic, meaning it has the ability to generate its own electrical impulses without the need for external stimulation. This property allows the heart to beat independently of nerve input.
