How Does First-Degree Heart Block Affect a Patient's Cardiac Output

question 6

Multiple Choice

How does first-degree heart block affect a patient's cardiac output?

• A)It lowers the cardiac output.
• B)It raises the cardiac output.
• C)The cardiac output depends on the ventricular response.
• D)There is no effect on the cardiac output.

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Definitions:

Phenotypic Similarity

The degree to which two or more organisms resemble each other in their observable characteristics, due to genetic or environmental influences.

Monozygotic Twins

Twins who are genetically identical as they are formed from one fertilized egg that splits and develops into two embryos.

Natural Selection

A fundamental mechanism of evolution, whereby individuals with characteristics suited to their environment are more likely to survive and reproduce.

Charles Darwin

A 19th-century naturalist known for his theory of evolution and natural selection as mechanisms of speciation.