APPLIED RADIOLOGICAL ANATOMY

ANATOMY

CHEST AND CARDIOVASCULAR

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Where does an electrical impulse go after it leaves the Bundle of His?
A
SA node
B
aorta
C
AV node
D
Purkinje fibers
Explanation: 

Detailed explanation-1: -The bundle of His has two branches: Left bundle branch sends electrical signals through the Purkinje fibers to your left ventricle. Right bundle branch sends electrical signals through the Purkinje fibers to your right ventricle.

Detailed explanation-2: -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. This signal creates an electrical current that can be seen on a graph called an electrocardiogram, or EKG.

Detailed explanation-3: -This causes the muscle tissue of the ventricles to contract and force blood out of the heart-either to the pulmonary circulation (from the right ventricle) or to the systemic circulation (from the left ventricle). The impulse through the Purkinje fibers is associated with the QRS complex.

Detailed explanation-4: -[1] After electrical impulse is sent from the sinoatrial (SA) node to the atrioventricular (AV) node, the bundle of His quickly transmits the impulse to the left and right bundle branches and into the ventricles, resulting in a synchronized contraction of the ventricles.

There is 1 question to complete.