Define SA.node and Tidal volume
Answers
Answer:
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Explanation:
The SA (sinoatrial) node generates an electrical signal that causes the upper heart chambers (atria) to contract. ... The SA node is considered the pacemaker of the heart. Its electrical signals normally cause the atria of an adult's heart to contract at a rate of about 60 to 100 times a minute.
Answer:
The SA (sinoatrial) node generates an electrical signal that causes the upper heart chambers (atria) to contract. ... The SA node is considered the pacemaker of the heart. Its electrical signals normally cause the atria of an adult's heart to contract at a rate of about 60 to 100 times a minute.
The main function of the SA node is to act as the normal pacemaker of the heart. It initiates an action potential that results in an electrical impulse traveling through the heart's electrical conduction system to cause myocardial contraction
Explanation:
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