The Purpose of Hepatic Portal Circulation Is to Enable the Liver

question 36

Multiple Choice

The purpose of hepatic portal circulation is to enable the liver to:

• A)regulate blood pressure by increasing it
• B)remove waste products from the blood and excrete them in urine
• C)increase venous return to the heart
• D)regulate blood levels of nutrients and other substances

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Definitions:

Veins

Blood vessels that carry blood toward the heart, typically carrying deoxygenated blood from the tissues back to the heart except in the case of pulmonary veins.

Hemostasis

The physiological process by which bleeding ceases, involving blood vessel constriction and clot formation.

Thrombin

An enzyme in blood plasma that causes the clotting of blood by converting fibrinogen to fibrin.

Systole

Contractile phase of the cardiac cycle.