Which of the following is the correct sequence of structures that - ProProfs Discuss
Topics
Products
Follow Us:

Which of the following is the correct sequence of structures that allows the normal sequence of excitation to progress through the heart?



A. Bundle of His - Purkinje fibres - AV node
B. SA node - Purkinje fibres - AV node - Bundle of His
C. Purkinje fibres - AV node - SA node - Bundle of His
D. SA node - AV node - Bundle of His - Purkinje fibres
E. Bundle of His - SA node - AV node - Purkinje fibres

This question is part of Anatomy and physiology questions - The cardiovascular system: The heart
Asked by Hermine, Last updated: Jul 07, 2020

+ Answer
Request

2 Answers

j. Goodman

J. Goodman, Web Content Writer, San Antonio

Answered Aug 22, 2018

The heart is a complex organ and consists of specialized connections that allow the heart to conduct the current for maximum excitation. These fibers have special names and are different from conventional heart muscle. The process goes from the SA node to the AV node and then to the Bundle of his and the Purkynje fibers to finally end in the heart muscle.

This special arrangement allows the heart to contract from below upwards so that the heart beats with maximum efficiency. The SA node is also considered as the pace maker of the heart which will allow a regular rhythm to establish so that the heart eats in a systematic manner.

 

John Smith

John Smith

Answered May 09, 2017

SA node - AV node - Bundle of His - Purkinje fibres
 

Search for Google images
Select a recommended image
Upload from your computer
Search for Google images
Select a recommended image
Upload from your computer
Search for Google images
Select a recommended image
Upload from your computer

Email Sent
We have sent an email to your address "" with instructions to reset your password.