In: Biology
The question below is very long and I am not sure how to answer some of the questions.
How much energy is needed for normal breathing? and How might this change with lung disease? how the ingredients in tobacco smoke damage/impair the respiratory system? What brain region controls respiration? What gas do the respiratory centers of the brain detect? How does this affect the respiration rate??
According to the chart, in 30 minutes of sleep a 125-pound person burns 19 calories, while a 185-pound person burns 28 calories. Sleeping is the one time that you can be sure that you're only breathing.
A cigarette wrap consists of dried tobacco leaves and chemicals that help even combustion. Burning tobacco releases close to 4000 toxic chemicals, including carcinogens like hydrogen cyanide, nitrous oxides, cadmium and lead.
On top of it cigarettes contain tar. It is common knowledge that cigarette stains the teeth and skin, its mostly due to the sticky nature of tar. Also Benzopyene present in the tar is a known carcinogen.
Medulla part of brain is regulating our involuntary life sustaining functions such as breathing, and heart rate.
The medulla oblongata basically detects carbon dioxide (CO2) and Oxygen (O2) levels in the bloodstream and determines what changes need to happen in the body. It can then send nerve impulses to muscles in the heart and diaphragm, letting them know that they need to either step up their game, or slow down a bit.