Which of These Statements Correctly Describes Venous Valves

question 89

Multiple Choice

Which of these statements correctly describes venous valves?

• A)They actively contract to force blood uphill against gravity.
• B)They passively close to prevent the backflow of blood in the veins.
• C) They are positioned at the entrances to the ventricles.
• D) They are two-way valves.

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Definitions:

Territorial Restrictions

Limitations imposed on the geographical area in which a product can be sold or a service can be offered.

Customer Restrictions

Limitations or specific conditions imposed on the purchasing, use, or selection process by customers, often by companies or regulatory bodies.

Interstate Commerce Clause

A provision in the U.S. Constitution that gives Congress the power to regulate commerce between states.

Sherman Act

An important United States antitrust law enacted in 1890 to prohibit monopolies and practices that restrain trade or commerce among states.