Astronauts in Zero Gravity Are Able to Move Food Through

question 62

Multiple Choice

Astronauts in zero gravity are able to move food through their digestive tracts because

• A)smooth muscle produces waves of contractions that propel material through the digestive tract.
• B)skeletal muscle puts pressure on the digestive tract.
• C)cardiac muscle maintains a high pressure that moves material through the digestive tract.
• D)striated muscle creates a pressure gradient that forces material from one end of the digestive tract to the other.
• E)skeletal muscle sphincters contract and allow materials to move through digestive tract.

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Definitions:

Variables

Elements, features, or factors that are likely to vary or change within the context of a scientific study or experiment.

Correlation Coefficient

A statistical measure that calculates the strength of the relationship between the relative movements of two variables. The values range between -1.0 and 1.0.

Calculation Error

A mistake made during the process of calculating, which can result in an incorrect outcome or answer.

Variables

Elements, features, or factors that can change and affect the outcome of scientific experiments or research studies.