Question

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Answer 1

Hey there you can Google it by copying each term.. It would be better there.. Not a spam jst a recommendation

Answer 2

Answer:answer of 1 and 2

function. The inferior vena cava is a vein. It carries deoxygenated blood from the lower half of the body to the right atrium of the heart. The corresponding vein that carries deoxygenated blood from the upper half of the body is the superior vena cava.

Explanation:

answer of 3 and 4 The right auricle receive non-oxygenated blood from upper and lower venacava and small veins in the thorax and direct it to the right ventricle. While the left auricle receive oxygenated blood coming from lungs through pulmonary veins and direct it to the left ventricle.

then answer of atriums

The right atrium is the first chamber of the heart to receive deoxygenated and carbon dioxide-rich systemic blood from the body, and the left atrium is the first chamber to receive the oxygenated blood returning from the lungs.