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nasty-shy [4]
3 years ago
6

At which position on an electrocardiogram do the atria contract?

Biology
1 answer:
nordsb [41]3 years ago
7 0

Answer:

P wave

Explanation:

Electrocardiogram records the strength and timing of electrical activity in heart. As various regions of heart contract at different times and for different duration, the electrical activity is not constant and shows a series of rise and fall. There are three main components of ECG: P wave, QRS complex and T wave.

P wave indicates the beginning of electrical signal in the right atrium. The signal spreads in both right and left atria which leads to their contraction. As a result, blood is pumped into the ventricles and rest of the process occurs.

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The examples of positive feedback loops are as follows:

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<h3>WHAT IS POSITIVE FEEDBACK LOOP:</h3>
  • Positive feedback loop is that in which a change in a given direction causes additional change in that same direction.

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Therefore, the examples of positive feedback loops are as follows:

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