In Comparing the Volume of Blood Moved from Atria to Ventricles

question 12

Multiple Choice

In comparing the volume of blood moved from atria to ventricles when the atria contract with the volume of blood ejected from the heart when the ventricles contract, we observe that_________ .

• A)atrial contractions move as much blood into the ventricles as ventricles eject
• B)atrial contractions move less blood into the ventricles than ventricles eject
• C)atrial contractions move more blood into the ventricles than ventricles eject

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Definitions:

Earth's Atmosphere

The layer of gases surrounding Earth, retained by Earth's gravity, which protects life by absorbing ultraviolet solar radiation, warming the surface through heat retention, and reducing temperature extremes between day and night.

Nitrogen

Nitrogen is a chemical element with the symbol N and atomic number 7; it is a colorless, odorless gas that is a fundamental part of amino acids and nucleic acids, essential for life.

Carbon Dioxide

A gas without any color or smell, emanating from the burning of compounds containing carbon and the respiratory process, absorbed by vegetation in the process of converting light into energy.

Carbon Cycle

The series of processes by which carbon compounds are interconverted in the environment, chiefly involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels.