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The circulatory system is responsible for delivering oxygen and other nutrients to virtually all body cells and removing carbon dioxide and other waste products from them. In common with nervous and lymphatic systems, this complex network extends into every crevice of the body. The circulatory system is composed of the heart, blood vessels, and blood. Although the heart is linked to emotions and virtues, such as love and courage, it is simply a muscular pump. Its regular beats send blood into tough, elastic tubes called arteries, which branch into smaller vessels and convey oxygen-rich blood through the body. The arteries eventually divide into tiny capillaries, the walls of which are so thin that oxygen, nutrients, minerals, and other substances pass through to surrounding cells and tissues. Waste substances flow from the tissues and cells into the blood for disposal. The capillaries join and enlarge to create tubes that eventually become veins, which take blood back to the heart. The intricate network has a length of some 150.000km-equivalent to almost four times around the Earth. The brain accounts for 2% of total body weight, yet it requires 20% of the body's blood. Both oxygen and glucose are transported by blood; without these essential elements, brain function quickly deteriorates and dizziness, confusion, and loss consciousness may occur. Within only four to eight minutes of oxygen depravation, brain damage, or death results. The brain has an abundant supply of blood from a vast network of blood vessels that stem from the carotid arteries, which run up each side of the neck and from two vertebral arteries that run alongside the spinal cord.
A brain tumour is a mass of abnormal cells growing in the brain. The cells can come from the brain itself, from its lining, or from other places in the body. Brain tumours that develop in the brain itself (from brain cells, blood vessels, nerves, or membranes covering the brain) are called primary brain tumours. They may be benign or malignant. Benign brain tumours grow slowly and do not invade brain tissue. They still pose a threat to health because they may put pressure on important areas of the brain. Malignant primary brain tumours spread into the healthy tissues that surrounded them and tend to grow more quickly than benign tumours. They are difficult to treat because they spread into the brain like alien invaders in a population of normal citizens. Brain tumours that spread from cancer elsewhere in the body are secondary or metastatic brain tumours. They are all malignant.
Cause of Brain Tumours
Past radiation to the head and neck may cause astrocytomas and some other tumours. These "radiation-induced" tumours occur 5 to 20 years after the original irradiation; we think they occur because of DNA damage sustained during prolonged radiation from diagnostic x-rays cause brain tumours.
- Chemical Exposure and Diet
Exposure to certain chemicals such as vinyl chloride, pesticides may lead to astrocytomas. Tobacco, alcohol and diet have not been directly associated with brain tumours.
- Electromagnetic Fields
Some researchers and patients have raised concerns about a link between brain tumours and the electromagnetic fields surrounding cell phones or high-tension wires. Several recent studies have shown to such correlation.
Possible Symptoms and Signs of a Brain Tumour
Headaches, weakness, vision loss, hearing loss, unsteadiness, seizures, and other problems may all be indicators of a brain tumour. In 2000, it was painful and sometimes dangerous to do the studies that could assess whether there was actually a tumour underlying these symptoms. These are common complaints and usually don't mean that a person necessarily has a brain tumour. Imaging can distinguish some of these conditions from brain tumours; others require biopsy. Fortunately, we have advanced remarkably in our ability to diagnose brain tumours without invading the body. CT, MRI and PET scans have completely changed our capacity to make an efficient and accurate diagnosis.
How to stop spread of disease in solving local and global?
Brain tumours can only detect by scanners, as it's said before. However, these scanners are limited in Indonesia and not limited for big countries such as United States. There are many ways to make the brain tumours stop spreading, such as; people in Indonesia and around the world have to be checked every single month for their brain health, whether they are poor or rich. Then, if it is detected as Brain Tumours, we have to act fast to handle this situation by getting ready for surgeries or any kind of treatment that the doctors know for brain cancer. Actually, brain tumours were not because of viruses or bacteria that can spread to other people when we're sitting or stand beside someone who's got the disease. Although, brain tumours are very dangerous, people still don't know what caused of this disease before someone makes a 'speech' about this disease.
Affects of various aspects in Life
The physical experience of brain tumours can certainly be difficult, and if you have this illness you may also be in for a wrenching emotional time. As with any crisis, you may go through a process of grieving for the life you have lost, acceptance and adjustment. Many people work through their shock and anger without significant psychological effects, yet others suffer more intense emotional damage that can result in long-lasting personal or marital problems. As you wrestle with your shock, anger and disbelief-and your fear of the unknown-many resources are available to help, including family members, physicians, counsellors, mental health professionals, social workers, clergy, local and national support groups, Internet information pages and talk groups and hotlines.
Try to find a medical centre that has a finger on the pulse of the latest treatments both nationally and internationally. Many of the major hospitals or societies for adults in the United States that offer sophisticated treatment for brain tumours belong to one of two clinical consortiums. In all societies, the nurse or doctor may be willing to contact specialist in other institutions if we wish to be referred to a larger treatment center. While you are going through treatment, you may encounter many different health care providers, and you may find it confusing at times to know which one to call. If you are being cared for in a teaching hospital, you may meet several residents who want to know about your case. Trainees often provide an important backup for the attending physicians. If you have health insurance through your job, you may be concerned about what will happen to that coverage if you have to take a leave of absence or if you will no longer be able to work.
If you have a brain tumours, you may say want desperately to know whether there is any hope. The answer is yes. There are many reasons for this. The tumour may be incidental and not need to be treated at all; the initial treatment may produce a cure or at least long-term remission; better and better treatments are being developed for malignant tumours; the outcome for you is completely unknown no matter what the statistic say; and more and more resources are available to help you in your journey even if you have a malignant tumour that is not responding to therapy. Many people think a brain tumour is equivalent to a death sentence. Statistical research show that this is far from the actual truth. Whatever stage you're in-whether you've just been diagnosed with a brain tumour, are undergoing treatment, or are looking forward to recovery-remember that there's always reason to hope.