The circulatory system
Describe the general function of the system and explain how the organ system contributes to physiological homeostasis of the human organism.
The circulatory system entails the way in which the various fluids that are found in the human body such as the blood, water and plasma fluid are transported from one body part to another. The circulatory system involves organs system that are used to distributed valuable nutrients and minerals such as hormones, nutrients, oxygen, carbon dioxide, that are involved in the respiratory process, amino acids, blood cells, and electrolytes. The nutrients are very essential in the human body since they help fighting diseases in the body thus keeping the human body healthy. The circulatory is an important aspect of the body since it helps to regulate and stabilize the normal body temperature and pH thus maintaining homeostasis (Chiras, 2005).
The circulatory system majorly involve key organs of the body such as the heart, the body arteries that carry oxygenated and carbonated blood, veins and the small capillaries. The coordination of the blood vessels leads the blood into the heart which pumps the blood around all the other body parts. The circulatory system also assists in the cooling of the body especially when the temperatures are high and warming the human body by providing adequate warm in the cold seasons (Connell, 2007). The amount of sugar irons and salt are also controlled by the circulatory system because it distributes blood from areas whereby the product are high to where they are low. For this reasons, I was able to explain to the athletics students on the various ways that the circulatory system assists in the maintaining physiological homeostasis of the human body.
Circulatory organs and functions
1. The heart
The heart is the major organ of the circulatory system whose main function is to pump the oxygenated blood which is rich in nutrients to the other body parts (Wilcox Et. al, 2005). Its other function is to pump deoxygenated blood to the lungs. This is possible because of its muscular wall and the numerous blood vessels.
2. The lungs
The lungs are very vital organs of the human body since its main function is add oxygen into the blood. The lungs collect blood from the heart from the right pulmonary artery. The blood is usually from the body thus lacks the essential minerals and nutrients that are necessary for survival (Bjorklund, 2008). Therefore, the lungs add oxygen to blood which is then transmitted back to the heart before being pumped to the body parts.
3. The arteries
The arteries are among the blood cavities that are used to transport blood throughout the entire body parts. Most of the major blood arteries such as the aorta is to transport blood from the heart to the body parts for utilization. The walls of the arteries are thick to withstand the high pressure and the speed in which the blood is transported in them (Chiras, 2005).
4. The veins
Blood vessels also consists of the veins whose key function is to ensure that the blood cells which are rich in deoxygenated blood are transported to the heart and then to the lungs for addition of oxygen. The number of veins in the body is more compared to the arteries since the blood in them moves at a much slower rate. This is also to ensure that the blood reaches the heart at faster rate for additional of oxygen.
5. The capillaries
Capillaries are also among the blood vessels in the body and there main function is to coordinate the movement of the blood between the arteries, veins and the body organs. The capillaries are numerous in number to ensure that the body parts are well fed with blood which is rich in oxygen. The capillaries are also able to change in size to ensure that maximum numbers of red blood cells are allowed to pass thorough them to rich the intended organ (Connell, 2007).
How the structures of the heart are related to its function
The heart is made up of chambers which are referred to ventricles and auricles. The lower cavities are alienated into the right and the left ventricles. This also applies to the auricles which are divided into right and left auricle. The edge wall of the left ventricles is aligned with thick cardiac muscles to ensure that the heart does not break down during the process of pumping blood to the body parts (Wilcox Et. al, 2005). The heart has the septum that is used to divide the heart into two respective sides, left and the right side. This is very vital since the right and the left side of the heart carries blood which is deoxygenated, blood rich in carbon dioxide and oxygenated blood, blood rich with oxygen respectively. The heart also has several blood vessels that are used to transport blood all over the whole body. For instance, the aorta is the major artery that carries blood rich with oxygen and other nutrients to other parts of the body (Bjorklund, 2008). The heart also has several valves that prevent the blood in the auricle from mixing with that of the ventricles.
High blood pressure
High blood pressure is the mainly universal type of disease that affects the circulatory system and affecting numerous human beings all over the world. The disease is a deadly epidemic that is currently killing a large number of people internationally (Chiras, 2005). The main cause of the high blood pressure in the human body is the high levels of fats and cholesterol which accumulate in the arteries, veins and capillaries thus making it very difficult for the heart to pump and transport the blood to other parts of the body. With the increase in consumption of food that is rich in cholesterol and fats, the human beings increase the chances of contracting the disease. The disease, high blood pressure, kills a lot of people in the sense that it makes the heart use a lot of energy and power to pump blood (Connell, 2007). With time as the patient grows old, the heart lacks the energy and grows weak thus breaking down because of stroke. This affects the normal body condition and health of a person thus causing death.
Reference
Bjorklund, R. (2008). Circulatory System, The Amazing Human Body, London: Marshall Cavendish
Chiras, D. (2005). Human biology, New York: Jones & Bartlett Learning
Connell, C. (2007). The effective health care supervisor, New York: Jones & Bartlett Learning
Wilcox, B., Cook, A., & Anderson, R. (2005). Surgical Anatomy of the Heart, Chicago: Cambridge University Press
