Answer: Skin
Explanation:
Level one of this system consists of physical barriers like your skin and the tears, sweat, saliva and mucous produced by the skin and mucosal lining are part of that physical barrier, too.
Yes u will be fine i have braces it wont affect it at anyime. Just rinse your mouth after really good.
Lol why would you want to know?
Digestive issues (gas)
fatigue
keratosis polaris
Answer:
Protraction is the anatomical term of motion for anterior movement of an anatomical part of the body forward. This can include the shoulders, jaw, pelvis, etc. It is the opposite of retraction.
