Passive smoking is when someone breathes in the combination of: Smoke exhaled by a smoker + Smoke from the end of a burning cigarette or cigar. This smoke is also referred to as second-hand smoke or environmental tobacco smoke. The Effects of Passive Smoking. The scientific evidence about passive smoking shows us just how dangerous second-hand smoke really is. Here are the facts about passive smoking: Non-smokers exposed to second-hand smoke have an increased risk of lung cancer; Non-smokers who live with a smoker are 20-30% more likely to develop lung cancer
The endocrine system is made up of a group of glands that produce the body's long-distance messengers, or hormones. Hormones are chemicals that control body functions, such as metabolism, growth, and sexual development.
1. Describe the general function of the endocrine system. The endocrine system consisting of ductless glands secretes hormones directly into the blood that regulate body metabolism and body processes. 2. Compare and contrast the two control systems: the endocrine and the nervous system.Both systems control body functions. The nervous system controls through motor responses.he endocrine system and its chemicals (hormones) help regulate many metabolic processes. Hormones control chemical reactions, help regulate water balance, growth, reproductive cycles, and digestive processes. Endocrine glands secrete chemicals called hormones into the blood.