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Body Fluids And Circulations

Question
CBSEENBI11026005
Wired Faculty App

Pace-maker is

  • AV node

  • SA node

  • Bundle of His

  • Purkinje fibres

Solution

B.

SA node

Pace maker is the bundle of modified cardiac muscles that influence the heart beat. The muscle fibre of SA node (Sinu Atrial node) possess the highest rhythmicity among all cardiac muscle fibres arid can initiate excitory waves or heart beat at the highest rate. So, SA node is thepace-maker, which initiates each cardiac cycle and there by sets the basic pace of the heart beat.

Some More Questions From Body Fluids and Circulations Chapter

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Write the differences between

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What is the differences between lymph and Blood?

How many times does a heart beat per minute?

What is the function of bicuspid valves?

What is the function of tricuspid valves?

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What does the QRS wave represent in an ECG?

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