What Is the Name of the External Landmark That Identifies

question 77

Multiple Choice

What is the name of the external landmark that identifies the point at which the trachea branches into the right and left main stem bronchi?

• A) Sternal angle
• B) Cricoid cartilage
• C) Suprasternal notch
• D) Xiphoid process

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Definitions:

Conduction Cells

Specialized cells that transmit electrical impulses within the heart, facilitating coordinated heartbeats.

Aortic Semilunar Valve

The valve that regulates blood flow from the heart into the aorta, preventing backflow into the ventricle.

Lubb (S1)

The sound made by the closure of the mitral and tricuspid valves at the beginning of systole, commonly referred to as the "first heart sound."

Dupp (S2)

The sound made by the heart's valves closing in the cardiac cycle, often associated with the splitting or duplication of the second heart sound.