Over the Past 40 Years in the United States, the Average

question 158

Multiple Choice

Over the past 40 years in the United States, the average age at first marriage has _____ for both men and women.

• A)remained constant
• B)decreased by about 2 years
• C)increased by about 2 years
• D)increased by about 5 years

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Definitions:

Fetal Circulation

The circulatory system in a fetus that ensures oxygen and nutrients are supplied via the placenta and helps remove waste.

Foramen Ovale

Structural feature of the fetal heart that allows for blood to move directly between the right and left atrium.

Right Atrium

The right upper chamber of the heart that receives deoxygenated blood from the body and pumps it into the right ventricle.

Homeotic Genes

Genes that control the development of anatomical structures in various organisms by regulating the pattern of body formation.