Laboratory work №4
Subject: Stroke skin irritation – a test that determines changes in the tone of the sympathetic and parasympathetic autonomic nervous system during irritation.
Explanation. (It is known that sympathetic nerves constrict blood vessels of the skin, and parasympathetic nerves dilate them).
- Rub your fingernail against skin. Why do you see a white patch on your skin at the beginning and a red one after it? Explain why this stripe disappears after a while and there are no signs of irritation.
- Make a conclusion.