What is a capillary?

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The many small air bags in the lungs, with thin walls that allow oxygen to enter the blood.

The muscle that separates the chest from the lower part of the body.

A very thin tube, especially one of the smaller tubes that carry blood around the body.

One of two tubes that branch from the trachea and carry air into the lungs.

Windpipe.

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What is the trachea?

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Windpipe.

One of two tubes that branch from the trachea and carry air into the lungs.

A very thin tube, especially one of the smaller tubes that carry blood around the body.

The many small air bags in the lungs, with thin walls that allow oxygen to enter the blood.

The muscle that separates the chest from the lower part of the body.

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What are bronchi?

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A very thin tube, especially one of the smaller tubes that carry blood around the body.

The many small air bags in the lungs, with thin walls that allow oxygen to enter the blood.

Windpipe.

The muscle that separates the chest from the lower part of the body.

One of two tubes that branch from the trachea and carry air into the lungs.

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What is the diaphragm?

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One of two tubes that branch from the trachea and carry air into the lungs.

The many small air bags in the lungs, with thin walls that allow oxygen to enter the blood.

The muscle that separates the chest from the lower part of the body.

A very thin tube, especially one of the smaller tubes that carry blood around the body.

Windpipe.

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What are alveoli?

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A very thin tube, especially one of the smaller tubes that carry blood around the body.

Windpipe.

The many small air bags in the lungs, with thin walls that allow oxygen to enter the blood.

One of two tubes that branch from the trachea and carry air into the lungs.

The muscle that separates the chest from the lower part of the body.

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Answer incorrect

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