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Lchamp · Answer 1 · 2021-05-22T19:47:35+0000

The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.

Step-by-step explanation:

Diaphragm contracts and expands when you breathe air

Medhat · Answer 2 · 2021-05-27T10:29:02+0000

Answer:

A diaphragm on a microscope is the piece that enables the user to adjust the amount of light that is focused under the specimen being observed. A diaphragm is typically found on higher-power microscopes versus less expensive or toy models. The diaphragm is located directly under the stage or platform where user places the specimen or slide.

Step-by-step explanation:

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