Consider the following pathway: Blood full of nutrients from the digestive system moves through the hepatic portal system to the liver. The hepatic veins then carry blood from the liver to which large vein that transports the blood to the heart

The question is incomplete as it does not have the option which are:

Inferior vena cava

Explanation:

The circulatory system of human contains blood vessels to transport the blood to and from the heart. The veins transport the deoxygenated blood from the body to the heart and the arteries transport the oxygenated blood from the heart to the body.

Inferior vena cava is the large sized vein which transports the deoxygenated blood. The inferior cava is of two types: superior and inferior.

The inferior vena cava brings the deoxygenated blood from the lower body to the heart therefore the hepatic portal vein drain the blood into the inferior vena cava.

Thus, Inferior vena cava  is correct.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.