Tobacco and the Human Body - Part 1

The video explores the history and global spread of tobacco, highlighting its economic impact. It delves into the chemical composition of tobacco smoke, focusing on nicotine and tars, and their extraction processes. The video explains how nicotine enters and affects the body, particularly the nervous system, and discusses the potential health risks associated with smoking.

Describe the process of how nicotine enters the body.

What effects does nicotine have on the nervous system?

How does nicotine affect blood vessels, as observed in animal experiments?