Physical lines of defense include

skin, cielia, and mucous membranes.

hair.

nails.

teeth.

7 answers

mucous membranes in the respiratory tract.

tears in the eyes.

stomach acid.

cilia in the respiratory tract.
what is the answer
The answer is skin, cilia, and mucous membranes - which act as physical barriers to protect the body from pathogens and other harmful substances. Additionally, hair, nails, and teeth can also serve as physical lines of defense in certain situations.
When a doctor feels for lymph nodes, he is checking for
inflammation.

shrinking.

pain.

sensitivity.
The doctor is typically checking for inflammation, which may indicate infection, injury, or other medical conditions.
what is the answer
The correct answer is inflammation.
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