Place the following in the correct order:1. atria contract 2. AV node 3. Bundle of His 4. Purkinje fibers 5. SA node 6. ventricles contract

ANATOMY OF THE HEART

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	5, 1, 2, 3, 4, 6
B	2, 1, 5, 3, 4, 6
C	5, 6, 2, 3, 4, 1
D	2, 6, 5, 3, 4, 1

Explanation:

Detailed explanation-1: -The SA node starts the sequence by causing the atrial muscles to contract. That’s why doctors sometimes call it the anatomical pacemaker. Next, the signal travels to the AV node, through the bundle of HIS, down the bundle branches, and through the Purkinje fibers, causing the ventricles to contract.

Detailed explanation-2: -The SA (sinoatrial) node generates an electrical signal that causes the upper heart chambers (atria) to contract. The signal then passes through the AV (atrioventricular) node to the lower heart chambers (ventricles), causing them to contract, or pump. The SA node is considered the pacemaker of the heart.

Detailed explanation-3: -The bundle of His is an elongated segment connecting the AV Node and the left and right bundle branches of the septal crest. It is approximately 1.8 cm long in an adult heart[4] and is primarily located deep within the dense connective tissue.

Detailed explanation-4: -The sino-atrial (SA) node. The atrio-ventricular (AV) node. The bundle of His. The left and right bundle branches. The Purkinje fibres.

There is 1 question to complete.

GENERAL ANATOMY

ANATOMY OF THE HEART