domingo, 21 de mayo de 2017

Circulatory system illnesses

Arteriosclerosis

What is it?
Atherosclerosis is a disease where plaque builds up inside the arteries. Plaque is a sticky substance made up of fat, cholesterol, calcium and other substances found in the blood. Over time, this plaque hardens and narrows the arteries. That limits the blood flow.
Causes
The exact causes of arteriosclerosis are not known. Even so, if you smoke, you have high blood pressure or a lot of fat or cholesterol in your blood you’re more prone to suffer this illness.
Symptoms
In general, atherosclerosis has no symptoms until an artery narrows too much or completely. Many people do not know that they are suffering until they have a medical emergency.
Treatment
The treatment of atherosclerosis is based on the modification of the lifestyle, the use of medicines and even the surgery when it’s necessary.
The best way to combat this illness is the prevention of the cardiovascular risk factors and to have a healthy lifestyle, having healthy food and making physical activities.














Hypertension

What is it?
Hypertension is a cardiovascular disease that develops by elevating blood pressure. It is the one that is presented and diagnosed more frequently.
Causes
The exact causes of hypertension are not known. Even so, if you have obesity, a sedentary lifestyle or an excessive consummation of alcohol you are more prone to suffer this illness.  
Symptoms
In general, hypertension has no symptoms. Some patients can be alerted by unspecific symptoms that make go to the doctor and take the strain.
Treatment
The treatment of hypertension is based on a healthy lifestyle and the use of specific medicines to treat this illness.









Aneurysm

What is it?
An aneurysm is an enlargement or abnormal bulging of a part of an artery due to weakness in the wall of the blood vessel.
Causes
It is unclear exactly what causes aneurysms. Some are present at born. High blood pressure, high cholesterol, and smoking may increase the risk of certain types of aneurysms.
Symptoms
The symptoms depend on where the aneurysm is. If the aneurysm arises near the surface of the body, pain and swelling are often seen with a protuberance. Aneurysms within the body and brain often have no symptoms.
If an aneurysm ruptures the symptoms can be pain, low blood pressure, rapid heart rate or dizziness. When a brain aneurysm is broken, there is a sudden severe headache. The risk of death after a break is high.
Treatment
The treatment is based in regular check-ups, and in some cases surgery. To prevent you should have a healthy lifestyle and you shouldn’t smoke.
















Venous insufficiency

What is it?
It is a disease in which veins have trouble returning blood from the legs to the heart.
Causes
The exact causes of venous insufficiency are not known. Even so, if you have obesity, a sedentary lifestyle or some genetically causes make you more prone to suffer this illness.  
Symptoms
The most common symptoms are pain or swelling in the legs or
irritated or dry skin.
Treatment
Avoid sitting or standing for prolonged periods, lose weight if you are overweight, use compression stockings or some medicines.














Myocardium stroke

What is it?
It is the blockage of blood flow that results in the death of muscle tissue. Blockage happens in one of the arteries of the heart muscle, a coronary artery. It’s also known by heart attack.
Causes
The main cause of myocardial stroke is obstruction of the coronary arteries. For the properly function of the heart, blood must flow through the coronary arteries. However, these arteries may become narrowed, making circulation difficult.
Smoking, cholesterol, diabetes and hypertension, as some of the cardiovascular risk factors that force the heart to work in worse conditions.
Symptoms
The main symptom of the stroke is an oppressive pain in the center of the chest irradiated to arms (especially left), neck and back. Also can produce respiratory distress.
Treatment
The treatment of myocardium stroke usually requires the injection of thrombolytic medicines. They dissolve clots and anticoagulants, such as heparin.

The effects of myocardial infarction depends on the area affected and the size of the lesion, which can range from a decrease in the contractile force of the heart muscle to the immediate death of a person if the infarction interrupts the electrical conduction system from the heart.

PARTS OF THE CIRCULATORY SYSTEM

The Heart: The heart rests near the center of the chest. Thanks to consistent pumping, the heart keeps the circulatory system working at all times.

















Arteries: Arteries carry oxygen-rich blood away from the heart and where it needs to go.















Veins: Veins carry deoxygenated blood to the lungs where they receive oxygen.











Blood: Blood is the transport media of nearly everything within the body. It transports hormones, nutrients, oxygen, antibodies, and other important things needed to keep the body healthy.










Here you have a game to practise what you have learned!