In a Person at Rest,blood That Returns to the Heart

question 47

Multiple Choice

In a person at rest,blood that returns to the heart contains hemoglobin that is about ____ saturated with oxygen.

• A)3%
• B)22%
• C)75%
• D)97%

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Definitions:

Identical Twins

Twins resulting from the splitting of a single fertilized egg, sharing the same genetic material and often having very similar appearances.

Fraternal Twins

Twins that develop from two different eggs fertilized by separate sperm cells, resulting in siblings that are genetically unique.

Epigenetic

Refers to the study of changes in organisms caused by modification of gene expression rather than alteration of the genetic code itself.

Biological Parents

The individuals from whom a person inherits their genetic traits, typically referred to as the mother and father.