Answer:
Pili or hair erector muscle are a group of small muscles that are inserted into the hair follicle in its middle section, and when it contracts, it tenses the hair and erects it. It is innervated by the sympathetic nervous system, the contraction of the muscle is involuntary.
Answer:
Make sure the scene is Okay
Explanation:
You should check if there was or is anything dangerous that could have caused the person to collapse in the first place.
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A. young - old, middle-old, and old-old
A periodontist specializes in the tissue surrounding and supporting the gum.
the medical definition of periodontal means “investing or surrounding the tooth”, which is exactly what the gum does.
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