Question
Physical lines of defense include
(1 point)
Oskin, cielia, and mucous membranes.
hair.
Onails.
teeth.
(1 point)
Oskin, cielia, and mucous membranes.
hair.
Onails.
teeth.
Answers
GPT-4o mini
Physical lines of defense in the human body primarily include barriers that protect against pathogens and foreign substances. Among the options you've listed, the following are considered part of the physical defenses:
- **Skin** (which is implied by "Oskin"), as it serves as the first barrier against infection.
- **Cilia** (hair-like structures that move mucus) and **mucous membranes**, which trap and expel pathogens.
While hair, nails, and teeth can play a role in protection, they are not considered primary physical lines of defense in the same way that skin and mucous membranes are.
Given the options, the best choice is:
- **Skin, cilia, and mucous membranes.**
- **Skin** (which is implied by "Oskin"), as it serves as the first barrier against infection.
- **Cilia** (hair-like structures that move mucus) and **mucous membranes**, which trap and expel pathogens.
While hair, nails, and teeth can play a role in protection, they are not considered primary physical lines of defense in the same way that skin and mucous membranes are.
Given the options, the best choice is:
- **Skin, cilia, and mucous membranes.**