The First Heart Sound,"lub," Is Made by

question 77

Multiple Choice

The first heart sound,"lub," is made by

• A)closure of the AV valves.
• B)closure of the semilunar valves.
• C)contraction of the ventricles.
• D)contraction of the atria.

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Definitions:

Aspirin

A medication used to reduce pain, fever, inflammation, and, at lower doses, to prevent blood clots.

Blood Clots

Formations of semi-solid masses in the blood, potentially leading to medical conditions such as stroke or heart attack.

Coagulation Studies

Tests that assess the ability of blood to clot, used to diagnose and manage bleeding disorders.

Edema

Swelling caused by excess fluid trapped in the body's tissues, commonly occurring in the feet, ankles, and legs.