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References 5 Running Times Magazine: Fruit and vegetables contain components that protect against heart disease and stroke. This again suggests that there is an important link between the autonomic nervous system and cardiovascular risk factors in humans. Sex differences in sympathetic neural-hemodynamic balance: This means that exercise is much less effective than statins in lowering LDL. Its constant high force can enlarge the heart, weaken it heart failure , and cause hemorrhagic bleeding strokes.
When ischemia develops in the brain, it is called a stroke. This can cause weakness or numbness on one—side of the body. Slurred speech also develops in those that are having a stroke. The narrowing of the carotid arteries neck arteries , which supply blood to the brain, can be detected with an ultrasound exam carotid Doppler to determine the extent of the narrowing. High blood pressure is also a type of cardiovascular disease.
Its constant high force can enlarge the heart, weaken it heart failure , and cause hemorrhagic bleeding strokes. When the vessels in the lower legs are narrowed, it is termed peripheral arterial disease PAD.
In this condition, the blood supply to the lower legs and feet is severely diminished. A person with PAD often feels pain in the legs when walking or exercising claudication. In severe cases, the toes or feet can change color from a lack of blood circulation and can become very painful.
The Aorta carries oxygenated blood from the left side of the heart to the main organs of the body. The Pulmonary Vein carries oxygenated blood from the lungs to the left side of the heart. The Superior Vena Cava carries oxegenated blood to the right side of the heart from the body organs. The Inferior Vena Cava The circulatory system consists of the blood, the blood vessels and the heart. The Blood The Functions of blood are: Blood transports many substances.
Examples include oxygen, digested foods, waste materials and hormones. The blood destroys harmful bacteria and viruses. The blood can clot when we cut ourselves to prevent blood loss. The blood also plays a part in keeping our body tempratures constant. Chemical reactions in our cells produce heat energy which the blood carries around the body.
Blood Vessels Arteries can carry blood away from the heart. Veins carry blood to the heart. Capillaries are tiny blood vessels that link the arteries and the veins Effects of Smoking on the Circulatory System Smoking tobacco is an addictive and dangerous activity. The nicotine within the tobacco is and addictive drug and causes smokers to continue to smoke.
Addicted smokers need enough nicotine over a day to satisfy cravings or control their mood. The amount of nicotine a person needs determines how much smoke they are likely to inhale smoke, no matter what type of cigarette they smoke. Along with nicotine, smokers inhale about 7, other chemicals in cigarette smoke.
Many of these chemicals come from burning tobacco leaf. Some of these compounds are chemically active and trigger damaging changes in the body. Tobacco smoke contains over 60 known cancer-causing chemicals. Smoking harms almost every organ in the body, causing many diseases and reducing health in general. Dangerous chemicals in Tobacco smoke include: Raised blood pressure and heart rate. Tightening of blood vessels in the skin, resulting in drop in skin temperature.
Less oxygen carried by the blood during exercise causing fitness to deteriorate. Stickier blood which is more prone to clotting Damage to the lining of the arteries, which is thought to be a contributing factor to atherosclerosis the build-up of fatty deposits on the artery walls Atherosclerosis Reduced blood flow to extremities fingers and toes Increased risk of stroke and heart attack due to blockages of the blood supply. There are also more serious effects associated with smoking. Cancer of the lung, mouth, nose, larynx, tongue, nasal sinus, oesophagus, throat, pancreas, bone marrow, kidney, cervix, ovary, ureter, liver, bladder, bowel and stomach.
All of which are connected to the circulatory system through blood vessels and so bear the risk of spreading to the heart and other essential organs of the circulatory system. Reginald Garrett and Charles Grisham in their book "Biochemistry. If vessels become clogged, your heart health is also affected. The heart is a muscle, and like other body muscles, it depends upon a steady supply of blood. Clogging of the arteries that feed the heart leads to heart attack, explains Dr. Lauralee Sherwood in her book "Human Physiology.
Some foods benefit the circulatory system. For instance, unsaturated fats -- these occur mostly as plant-based oils -- are heart healthy and improve your cholesterol levels, preventing buildup of plaques in the arteries.
Eating plenty of dietary fiber also helps -- particularly soluble fiber, which absorbs cholesterol in the digestive tract and helps prevent your blood cholesterol levels from rising as high.
Fruits, vegetables, whole grains and beans are all good sources of fiber. Video of the Day. Natural Ways to Increase Blood Circulation. Foods for the Circulatory System.