The Third and Fourth Heart Sounds Are Caused by

question 56

Multiple Choice

The third and fourth heart sounds are caused by

• A) resistance.
• B) opening valves.
• C) closing valves.
• D) viscosity.
• E) turbulence.

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Definitions:

Phylogenies

The study and construction of family trees that show the evolutionary relationships among various biological species or other entities.

Traditional Animal

A term that might refer to species commonly recognized or domesticated by human cultures throughout history, but without a precise scientific meaning.

Fossil Record

The collection of fossils that has been discovered, providing evidence about the history of life on Earth.

Structural Protein

Proteins that play a role in building and maintaining the shape and structure of cells and tissues, such as collagen in connective tissues.