0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Are autorhythmic cells located only in the interventricular septume?
No, autorhythmic cells are found not only in the interventricular septum but also in the sinoatrial node (SAN) and atrioventricular node (AVN) of the heart. These cells are responsible for generating electrical impulses to initiate and regulate the heartbeat.
Is it true that av nodal cells are poorly interconnected to contractile cells but they have bigger diameters?
Yes, atrioventricular (AV) nodal cells have fewer gap junctions which results in poor interconnection with contractile cells. However, the AV nodal cells have larger diameters compared to contractile cells, allowing them to conduct electrical signals efficiently.
How do the waves of depolarization generated by the autorhythmic cells spread to the muscle cells?
Autorhythmic cells in the heart generate electrical impulses that spread through the atria and ventricles via specialized conduction pathways, such as the atrioventricular node, bundle of His, and Purkinje fibers. These pathways allow for coordinated depolarization of the muscle cells, ultimately leading to contraction of the heart chambers.
What does auto rhythmic mean?
Autorhythmic cells (pacemakers) refers to the cardiac muscle cells responsible for synchronizing the contractile cells to coordinate a heart contraction.
What does auto-rhythmic mean?
Autorhythmic cells (pacemakers) refers to the cardiac muscle cells responsible for synchronizing the contractile cells to coordinate a heart contraction.
Which type of muscle tissue is autorhythmic?
cardiac muscle
What is AV nodal delay?
AV node is responsible for the delayin transmission of impulse generated in the SA node.This delay of impulse transmissions is called AV nodal delay. It is about 0.09 sec.Causes of AV nodal delayi. Junctional fibres of the AV node are very small in size.ii. Prolonged refractory periodof AV node.
When do we call a city a nodal city?
nodal city
What cells stimulate both atria to contract?
The sinoatrial (SA) node, located in the right atrium, is responsible for initiating the electrical impulses that stimulate both atria to contract simultaneously. These electrical impulses spread through specialized conducting fibers called the internodal pathways to ensure coordinated atrial contraction.
How are the heart impulses detected?
The Pacemaker cells of the Sinoatrial Node spontaneously initiates the impulse. Without stimulation from nerve fibers or any other outside agents, the nodal cells initiate impulses that spread into the surrounding myocardium and stimulate cardiac muscle fibers to contract.
What is the correct order of stimulation in the nodal pathways?
The correct order of stimulation in the nodal pathways is: 1. Sinoatrial (SA) node generates electrical impulses 2. Atrioventricular (AV) node delays the impulses 3. Bundle of His conducts the impulses to the bundle branches and Purkinje fibers for ventricular contraction.
When did John Howard Nodal die?
John Howard Nodal died in 1909.
