Question

Discuss how the blood, the cardiovascular system, and the muscular system as well as the respiratory system all contribute to respiration. Finally, discuss how breathed-in pollutants, such as smoke or asbestos, interfere with the respiration process and may lead to cancer.

Answer 1

The human cardiovascular system and respiratory system work together in order to supply oxygen (O2) and other substrates needed for metabolism and to remove carbon dioxide (CO2). Global and local control mechanisms act on the CVS in order to adjust blood flow to the different parts of the body. Local metabolic control is influenced by local concentrations of blood gases affecting systemic resistance, resulting to vasoconstriction/vasodilation. Thus, the exchange of blood gases demands a tight coordination between blood flow and ventilation of the lungs.

The muscular system helps push air come into and leave the respiratory system through the contraction and relaxation of the diaphragm, which is a inspiratory Muscle. The respiratory system has the lungs that deliver air to the muscles. Inspiratory and expiratory muscles act during the respiration . Primary inspiratory muscles are diaphram and external intercostal muscle.primary expiratory muscle are internal intercostal muscles.

The respiratory system is what allows us to breathe and exchange carbon dioxide for oxygen. The human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide. The primary organs of the respiratory system are the lungs, which carry out this exchange of gases as we breathe

Asbestos is also an important lung carcinogen, combined effect of asbestos and smoking is additive (each factor acts independently) or multiplicative (the effect of asbestos exposure on lung cancer risk is proportional to the effect of smoking) Asbestos is a unique mineral that can be pulled apart into flexible fibers. When a person inhales or swallows microscopic asbestos fibers, their body often cannot degrade or expel them. Over many years, the fibers cause inflammation and genetic changes that can lead to cancer.

Lifestyle factors may increase your risk of developing cancer after asbestos exposure. These include smoking, heavy alcohol use, poor dietary habits and poor physical fitness.Most cases of asbestos-related disease are linked with occupational exposure.