BAT Bets on Vaping as Tobacco Giants Battle With New Devices. Trailing Philip Morris International Inc. in the contest to move smoking alternatives beyond e-cigarettes is just fine with British American Tobacco Plc. According to Kingsley Wheaton, head of BATâs next-generation products, longer-established electronic smokes hold more promise than the heat-not-burn technology pioneered by its main rival.
Fear or excitement causes signals to travel to the hypothalamus, which triggers a rapid heartbeat, faster breathing, widening of the pupils, and increased blood flow. The hypothalamus monitors blood glucose levels and the body's water content to regulate appetite for food or drink.
Human Body Regulation. In this activity, students learn how the human body self-regulates to maintain a stable internal environment despite changes in the external environment -- a process called homeostasis. They begin by looking at how the human body regulates temperature and the value of a fever in fighting infection. Then they use an interactive Web activity to explore other ways in which the body maintains homeostasis, such as by controlling heart rate, respiration rate, blood sugar levels, and blood pressure. Finally, they learn how exposure to extreme environment conditions -- such as high altitude -- can affect the body's ability to maintain homeostasis.