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Cardiovascular, respiratory and digestive system

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Introduction

´╗┐Cardiovascular, respiratory and digestive system The cardiovascular system, also known as the circulatory system uses the blood to carry oxygen and nutrients to the body?s cells and then takes the waste products from them. The cardiovascular system contains ? the heart which is a muscle that acts like a pump to keep blood moving, the arteries which carry blood from the heart, the veins which carry blood into the heart and the capillaries which are tiny vessels that are near the body cells. The cardiovascular system carries oxygenated blood on the right of the diagram and deoxygenated blood on the left. deoxygenated blood travels from the head and the liver and the rest of the body, to the heart, and from the heart to the lungs. ...read more.

Middle

The lungs have the gas exchange surfaces, bronchiole which is smaller tubes which are inside the lungs and come from the bronchus to the alveoli. The alveoli are tiny air sacs at the end of the bronchioles and this is where gas exchange occurs. Ribs which give a moveable cage and to protect the lungs, the intercostals muscle is what helps the ribcage tpo change volume. The diaphragm work with the intercostals muscle to make ventilation happen. http://mrediv5.edublogs.org/files/2013/09/respiratory-system-diagram-1reje5r.jpg The digestive system is an organ system which humans can exchange substances with the environment. It contains many parts which have different functions. Digestion breakdown larger molecules into smaller molecules so they are soluble and can get absorbed by the body. ...read more.

Conclusion

is at the ileum which is at the end of the DS. This is where nutrients are absorbed and they go through the hepatic portal vein to the liver and then to the rest of the CVS. The link between the CVS and RS is simple, as cardio is the heart and lungs and vasculated means the blood vessels found in the body the air from the environment is pulled into the alveoli which is in the lungs and this is vascular which means it is part of the cardiovascular system. This is where gas exchange occurs ? oxygen goes in and carbon dioxide goes out- and then it is the RS which brings in oxygen into the body and removes carbon dioxide. ...read more.

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