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Yes, but they're not identical.

The mucus lining the respiratory system is used as a dirt (well, dust) trap.

The mucus lining the digestive system acts as a barrier to the digestive juices (so that you don't try to digest yourself [see 'ulcers' as example of failure]).

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12y ago
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15y ago

No. Skin is a part of the integumentary system.

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15y ago

yes there are mucous membranes in the respiratory system

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11y ago

yes

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11y ago

Our nose.

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