why is the only path of conduction for impulse transmission from the atria to the ventricles through the av node and av bundle?

1 answer:

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Because the AV node takes on the role of a very important delay in the cardiac conduction system. Without this delay, the atria and ventricles would contract at the same time.

<h3>Cardiac conduction system</h3>

The conduction system of the heart sends electrical signals, usually generated by the sinus nodes, causing the heart muscle to contract. Pacemaker signals originating from the sinus node travel through the right atrium to the atrioventricular (AV) along the bundle of His and through branches of the bundle, causing myocardial contraction. This signal first stimulates contraction of the right and left atria then flows to the right and left ventricles. That electric current then allows blood to be pumped throughout the body.

Learn more about sequence of travel by an impulse through the cardiac conduction system at brainly.com/question/28269433

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Which of the following statements about the development of infectious diseases is correct?

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The period of Convalescence is the time during which the person regains health and fully recovers.

Explanation:

Diseases that can spread from one person to other are called infectious disease.
Disease development is divided into Incubation period, Prodromal period, period of illness, Decline period, and period of Convalescence.
During incubation period the pathogen enters the host body and starts multiplying itself. But the signs of diseases are unnoticeable.
Then comes the prodromal period, when the pathogen keeps multiplying itself and some signs of disease are observed but they are not obvious
After the prodromal period comes the period of illness when the patient exhibits obvious signs of sickness.
As the period of illness is over the symptoms of disease start to cease and the the number of pathogen decrease in body.This period is the period of decline.
Finally comes the period of Convalescence when the person returns to his pre-disease state and is completely healthy. (except irreversible damage caused by the disease)