The blood away which carry the bright red oxygenated blood away from the heart are called arteries. The large arteries, which receive the blood directly from form the heart, branch repeatedly until every part of the body is served by one or more of them.
The blood returns from all parts of the body to the heart through veins. There are many more veins than arteries throughout the body. The veins gradually unite to form larger veins as they approach the heart.
When the blood is sent out over the body through the arteries it passes into the capillaries in which the arteries end. The capillaries are tiny hairlike blood vessels forming a network throughout the body. The tissue is so well supplied with capillaries that even a pinprick is likely yo break some of them and result in the appearance of a few drops of blood.
When an artery, vein, or capillary is broken or cut, blood flows the broken vessels. Usually the blood flow the broken blood vessels is stopped by the formation of a clot in the end of the broken vessels. Bleeding from a large artery comes in serious. The blood from a served artery is extremely serious. The blood from a served artery comes in spurts. There is a smooth flow of blood from veins.
The pumping action of the heart ceases only with death. Ay and night, year after year, it continues to work in pumping the blood throughout the body. It can rest only by pumping more slowly or less powerfully.
The heart is a hollow, pear-shaped muscular organ located just slightly to the left of the midline of the body in the chest cavity. It can be located easily by the sound of the heartbeat or the feeling of its contraction through the skin and muscle that lie over it.
At birth the heart beats about 130 times a minute, at six years it beats 100 times a minute, at ten years about 90, and at fifteen years about 85. The approximate normal heart rate among adults ranges from 65 to 80 betas per minute. During a lifetime the heart beats 2,500,000,000 times and pumps a total of nearly 15,000,000 gallons.
The impulse which causes the heart to contract develops in some nerve tissue which is called the peacemaker of the heart. An attempt to measure this impulse indicates that its energy is the equivalent of one-thousandth of a volt.
The blood from all parts of the body empties into the heart through large veins. Then it is sent through the lungs, where it acquires a new supply of oxygen. The blood the returns to the heart from the lungs. When the heart muscle contracts, the blood is forced out the heart, then goes by away of the large arteries and capillaries to the farthest extremes of the body.
The heart moves a total of five hundred gallons of blood a day. Since there are about six quarts of blood in the whole body, the heart moves the same fluid, slightly modified chemically as it travels about, over and over again
Panic attack symptoms women Are you looking for panic attack symptoms women? Panic attacks may be symptoms of an anxiety disorder. These attacks are a serious health problem in the U.S. At least 20% of adult Americans, or about 60 million people, will suffer from panic attacks at some point in their lives. About 1.7% of adult Americans, or about 3 million people, will have full-blown panic disorder at some time in their lives, twice as often for women than men. The peak age at which people have their first panic attack (onset) is 15-19 years. Another fact about panic is that this symptom is strikingly different from other types of anxiety; panic attacks are so very sudden and often unexpected, appear to be unprovoked, and are often disabling.
Food, Diet, and Asthma Patients with asthma often wonder whether the food they eat may make their symptoms worse. There is still much uncertainty about diet and asthma, and so confusing advise is often given.
Birth Control Side Effects Long Terms Many of the adverse effects of oral contraceptive use reported
in the older literature were found subsequently to be dose related. As a result,
the incidence of side effects has diminished dramatically as the hormonal
content of the pill has plummeted. In the 1960s, the pill had 150 ug of
mestranol and 10 mg of progestin, whereas modem low-dose formulations have 20-35
ug of estrogen and 1 mg or less of progestin. Side effects reported to occur
with oral contraceptive use include headaches, weight changes, mood changes,
changes in libido, vaginal changes, and gastrointestinal problems. A recent
double-blinded, placebo-controlled study found that the incidence of side
effects with low-dose oral contraceptives was not statistically different from
that of the placebo users. The incidence of weight gain, breast tenderness, and
headache was essentially the same in each group.
Bell Palsy Treatment Guidelines Bell's palsy is an idiopathic facial paresis that has been attributed to an inflammatory reaction involving the facial nerve. A relationship of Bell's palsy to reactivation of herpes simplex virus has recently been suggested, but there is little evidence to support this.
What is an intrauterine contraceptive device, or IUD An IUD (intrauterine contraceptive device) is a small plastic device that can be inserted by a physician trough a woman’s cervix and into her uterus to prevent pregnancy. The procedure is done in a physician’s office, usually during or immediately after the menstrual period so that a woman can be sure she is not pregnant.
Chemotherapy for Breast Cancer Are you looking for chemotherapy for breast cancer? here is some article about chemotherapy for breast cancer.
The initial management of the breast cancer patient consists of assigning a clinical stage based on examination. The stage may be altered once the final pathology of the tumor has been determined. Staging of breast cancer is based on the TNM staging system.
Open heart surgery Are you looking for about open heart surgery? Open heart surgery is a surgery in which the patient's heart is opened and surgery is performed on the internal structures of the heart. It was soon discovered by Dr. Wilfred G. Bigelow of the University of Toronto that the repair of intracardiac pathologies was better done with a bloodless and motionless environment, which means that the heart should be stopped and drained of blood. The first successful intracardiac correction of a congenital heart defect using hypothermia was performed by Dr. C. Walton Lillehei and Dr. F. John Lewis at the University of Minnesota on September 2, 1952. The following year, Soviet surgeon Aleksandr Aleksandrovich Vishnevskiy conducted the first cardiac surgery under local anesthesia.
Foods to help anemia treatment Abnormally low numbers of red blood cells and reduction in the amount of hemoglobin in those cells results in anemia. Because red blood cells are needed as carriers of oxygen to the tissues, oxygen supply to the body is subsequently interrupted. The exact cause of anemia must be diagnosed by physician before any treatment can begin.
Anemia can be caused bay an iron deficiency due to blood loss from excessive menstrual flow, gastrointestinal bleeding and ulcers, during pregnancy, breast-feeding, from frequent blood donations, colon cancer, or lack of iron in the diet. It can result from autoimmunity, a condition in which the immune system mistakenly attacks itself, in this case the red blood cells; or from a malfunction of the bone marrow system when it is adversely affected by infection, cancer or toxic chemical exposure or radiation. Anemia can also occur because of a deficiency of vitamin B6, B12, folic acid, or copper; and from certain anti-inflammatory drugs or antibiotics or an excessive consumption of alcohol. Genetics may also be a factor.
Pleurisy symptoms back pain Pleurisy (also known as pleuritis) is an inflammation of the pleura, the lining of the pleural cavity surrounding the lungs. Among other things, infections are the most common cause of pleurisy.
The inflamed pleural layers rub against each other every time the lungs expand to breathe in air. This can cause severe sharp pain with inhalation (also called pleuritic chest pain). Here is some stuff about pleurisy symptoms back pain.
What is Vitamins Vitamins are organic compounds (compounds made up of carbon atoms bonded to hydrogen atoms) that are necessary in small amounts for good health. The body can break vitamins down, but it cannot produce them. Vitamins have to be supplied in the diet. Unlike carbohydrates, fats, and proteins, vitamins yield no energy. Instead, some serve as catalysts that enable energy nutrients to be digested, absorbed, and metabolized. Some vitamins also interact with mineral. For example, vitamins C facilitates iron absorption, vitamin D improves calcium absorption, and thiamine requires the mineral magnesium to function efficiently.
Diabetes Mellitus Type 1 Diabetes mellitus type 1 (Type 1 diabetes, IDDM, or, formerly, juvenile diabetes) is a form of diabetes mellitus that results from autoimmune destruction of insulin-producing beta cells of the pancreas.The subsequent lack of insulin leads to increased blood and urine glucose. The classical symptoms are polyuria (frequent urination), polydipsia (increased thirst), polyphagia (increased hunger), and weight loss.
Heart Attack Symptoms Warning Signs As the atherosclerotic plaques enlarge, they become cracked and ulcerated. The clotting factors in the blood may treat this ulceration like a cut and form a clot over the plaque, completely blocking the artery. When a branch of a coronary artery becomes totally obstructed, the heart cells that it supplies die, resulting in a heart attack. Heart attack is medically referred to as a myocardial infarction, meaning death of the heart muscle.
Although clot formation over an ulcerated plaque is believed to cause the majority of heart attacks, others are caused when a piece of plaque or clot breaks off, obstructing the artery below the actual site of atherosclerosis. A few may be caused when the diseased artery contracts because of irritation from the plaque. About 1.5 million persons have a heart attack in the United States each year.
Natural Head Lice Treatment Are you looking for natural head lice treatment? here is some good stuff about natural head lice treatment. Head lice are tiny wingless insects that are grey-brown in colour. They are the size of a pinhead when they hatch and 3mm long (the size of a sesame seed) when fully grown. Head lice cannot fly, jump or swim. They are spread by head-to-head contact and climb from the hair of an infected person to the hair of someone else.