The Second Heart Sound (S₂) Occurs Because of the Closure

question 5

Multiple Choice

The second heart sound (S₂) occurs because of the closure of the:

• A) Aortic valve
• B) Tricuspid valve
• C) Aortic and pulmonic valves
• D) A and B

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Definitions:

Competitive Business Markets

Markets characterized by the presence of multiple firms competing for customers in a given industry or sector.

Cultural Survival

Efforts and movements aimed at preserving, protecting, and maintaining the cultural heritage, practices, languages, and rights of indigenous peoples and minority groups.

Aboriginal Communities

Groups of indigenous peoples with their own unique cultures, traditions, and often self-governing structures.

Hunting Prowess

The skill, expertise, or ability in hunting, often highlighted in cultures or societies where hunting plays a significant role in sustenance or tradition.