Final answer:
The correct name for chest leads in an ECG is 'Precordial'. Precordial leads consist of six electrodes placed on the chest to record the heart's electrical activity from various horizontal angles.
Step-by-step explanation:
The correct answer is option B. Precordial. In a 12-lead ECG (electrocardiogram), there are two main types of leads used to measure the heart's electrical activity: the limb leads and the chest leads. The chest leads, also known as precordial leads, consist of six electrodes placed on the chest area to record the heart's activity from different angles. These leads are identified by the letters V1 through V6 and provide a direct view of the heart's electrical activity in the horizontal plane. The remaining four electrodes are placed on the limbs—the right arm, left arm, right leg, and left leg—and are referred to as the limb leads. Together, these ten electrodes create a complete 12-lead ECG, offering a comprehensive examination of the heart's function.
Chest leads in an ECG are also known as precordial leads. These leads are placed on the chest for a 12-lead ECG. There are six electrodes placed on the chest, which are used to record electrical changes in the heart's activity from different angles.
In contrast, limb leads are the ones placed on the limbs (arms and legs). There are four limb leads used in a 12-lead ECG, which are used to record electrical activity of the heart in the frontal plane.