When Is a Small Amount of Surfactant Present in Infants

question 19

Multiple Choice

When is a small amount of surfactant present in infants born prematurely?

• A) 20 weeks' gestation
• B) 24 weeks' gestation
• C) 28 weeks' gestation
• D) 35 weeks' gestation

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Definitions:

Purkinje Fibers

Specialized fibers in the heart that help regulate the heart's rhythm by conducting electrical impulses swiftly.

AV Bundle

The His bundle, a group of specialized cardiac muscle cells designed for conducting electricity, conveys the electrical signals from the AV node to the apex where the fascicular branches begin.

Cardiac Cycle

The sequence of events that occur in the heart during one complete heartbeat, encompassing both diastole and systole phases.

Left Atrium

One of the four chambers of the heart, which receives oxygenated blood from the lungs.