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If the Universe Is Closed,where Is Its Center

question 23

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If the universe is closed,where is its center?


Definitions:

Serous Membrane

An epithelial membrane that lines a body cavity that does not open to the outside of the body.

Pleural Membranes

Thin layers of tissue that envelop the lungs and line the interior of the chest cavity, facilitating lung movement during breathing.

Pericardium

A membrane surrounding the heart and consisting of an outer fibrous layer and an inner double layer of serous membrane.

Cartilage

A flexible, connective tissue found in various forms throughout the body, including joints, ear, and nose.

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