ANATOMY

GENERAL ANATOMY

ANATOMY OF THE HEART

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The His-Purkinje system
A
Is responsible for the P wave on the ECG
B
Transmit the action potential from the AV node to the SA node
C
Is the ventricular electrical conduction system
D
Transmits the action potential from the ventricular myocardial cells to the AV node
Explanation: 

Detailed explanation-1: -The His-Purkinje System (HPS) is responsible for the rapid electric conduction in the ventricles. It relays electrical impulses from the atrioventricular node to the muscle cells and, thus, coordinates the contraction of ventricles in order to ensure proper cardiac pump function.

Detailed explanation-2: -The distal portion, known as the ventricular conduction system, allows for the rapid transmission of impulses from the atrioventricular node to the ventricular myocardium and plays a central role in cardiac function as well as disease when perturbed.

Detailed explanation-3: -The heart conduction system is the network of nodes, cells and signals that controls your heartbeat. Each time your heart beats, electrical signals travel through your heart. These signals cause different parts of your heart to expand and contract.

Detailed explanation-4: -Purkinje fibers or Purkinje cardiomyocytes are part of the whole complex of the cardiac conduction system, which is today classified as specific heart muscle tissue responsible for the generation of the heart impulses.

Detailed explanation-5: -The sinus node generates an electrical stimulus regularly, 60 to 100 times per minute under normal conditions. The atria are then activated. The electrical stimulus travels down through the conduction pathways and causes the heart’s ventricles to contract and pump out blood.

There is 1 question to complete.