Home | RSS

Links
Parenting Guide
WebMD Health Information
Health and Biology

Arteries, Veins, Capillaries and The Heart

Jan 12, 2012 > Biology
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 Heart

Arteries, Veins, Capillaries and The Heart 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

See about Mitral Stenosis Causes


Other Articles

Arteries, Veins, Capillaries and The Heart #0Acute Leukemia Prognosis, Symptoms and Treatment
Acute Leukemia is neoplastic disorders characterized by proliferation of immature hematopoietic precursor cells in the bone marrow, and later in the peripheral blood and other organs and tissues. If untreated, death usually occurs within six months of diagnosis. Increase risk is associated with the following:
Arteries, Veins, Capillaries and The Heart #1Symptoms of UTI (Urinary Tract Infections) in Women
Pregnancy causes numerous changes in the womanís body. Hormonal and mechanical changes increase the risk of urinary stasis and vesicoureteral reflux. These changes, along with an already short urethra (approximately 3-4 cm in females) and difficulty with hygiene due to a distended pregnant belly, increase the frequency of urinary tract infections (UTIs) in pregnant women. Indeed, UTIs are among the most common bacterial infections during pregnancy.
Arteries, Veins, Capillaries and The Heart #2TLC Diet Menu plan and GuideLines
The Therapeutic Lifestyle Changes (TLC) Diet was devised by the U.S. government's National Cholesterol Education Program (NCEP) to give guidance to people who have blood cholesterol problems. The TLC Diet doesn't have a recommendation for how many calories people with cholesterol problems should eat daily because calories don't affect cholesterol levels directly.
Arteries, Veins, Capillaries and The Heart #3Heterochromia Iridium Causes
In anatomy, heterochromia refers to a difference in coloration, usually of the iris but also of hair or skin. Heterochromia is a result of the relative excess or lack of melanin (a pigment). It may be inherited, or caused by genetic mosaicism, disease, or injury. Heterochromia of the eye (heterochromia iridis or heterochromia iridum; the common wrong form "heterochromia iridium" is not correct Latin) is of two kinds. In complete heterochromia, one iris is a different color from the other. In partial heterochromia or sectoral heterochromia, part of one iris is a different color from its remainder.
Arteries, Veins, Capillaries and The Heart #4Natural cure for leukemia
Are you looking for Natural cure for leukemia? Leukemias are grouped by how quickly the disease develops (acute or chronic) as well as by the type of blood cell that is affected (lymphocytes or myelocytes). The four main types of leukemia include acute lymphocytic leukemia (ALL), chronic lymphocytic leukemia (CLL), acute myelocytic leukemia (AML), and chronic myelocytic leukemia (CML). But most people who have these risk factors don't get leukemia. And most people who get leukemia do not have any known risk factors.
Arteries, Veins, Capillaries and The Heart #5Candida Symptoms and Treatment
Opportunistic infections caused by Candida species have increased substantially over the past 10 to 15 years. National data from the Centers for Disease Control and Prevention (CDC) indicate that Candida species caused 7.7% of bloodstream infections nationwide from 1985 through 1988. Seriously ill, immunocompetent patients and severely immunocompromised patients are at particular risk for nosocomial candidal infections. Included in these groups are neonates, patients with various forms of cancer who are leukopenic, and patients who have had major surgery (especially gastrointestinal and pancreatic), severe burns, or bone marrow transplants.
Arteries, Veins, Capillaries and The Heart #6Best Weight Loss Program
Are you looking for Best Weight Loss Program? All diets must do one of two things -- reduce calorie intake and/or increase calorie expenditure through movement. Even though it confounds many of us, experts say weight loss really does come down to a simple formula of calories in versus calories out. Most popular diet plans work by dramatically decreasing calorie intake, and some increase weight loss even further by prescribing a set amount of daily physical activity.
Arteries, Veins, Capillaries and The Heart #7Osteoporosis Causes, Symptoms and Treatment
Osteoporosis is a relatively common disorder characterized by a decrease in the calcium contents of the bones, which leaves them thin and susceptible to fracture.
Arteries, Veins, Capillaries and The Heart #8How Is Allergy Produced, Role Of Contact
Previous contact with or to a substance is necessary in order for a person to develop allergy to that substance. Such contact is not always easily demonstrable. For example, one may question the occurrence of previous contact in the case of baby who develops hives, eczema, or asthma upon ingesting cow milk for the first time. However, it may be demonstrated that the contact which produced sensitivity occurred before the baby as bon and was caused by enough the placental circulation. That contact plays a role in the development of allergy is demonstrated by the fact that allergic individuals living in Europe where there is no ragweed pollen never develop sensitivity to this pollen. In the same way there is no sensitivity to poison ivy among Eskimos who are not exposed to poison ivy.
Arteries, Veins, Capillaries and The Heart #9Symptoms of Angina and Treatment with Healthy Food and Diet
Angina is often experienced as a pain in the chest, frequently after running up a flight of stairs, but in extreme cases after getting out of a chair. It is brought on by an in adequate supply of oxygen via the blood to the heart muscle. Over many years, arteries begin laying down sticky deposits, which harden and eventually cause a narrowing within the blood vessels. Typical symptoms include pain in the centre of the chest, which sometimes spreads to the neck/jaw area and down the left arm. The pain may also be accompanied by breathlessness, feeling faint, sweating and/or nausea. If you have these symptoms, seek medical attention as a matter of urgency.
Arteries, Veins, Capillaries and The Heart #10What is Vitamin C
Vitamin C, also called ascorbic acid, is the most wily consumed nutritional supplement. It is essential to the formation of collagen, a protein that is used to form all the connective tissues of your body. It is required in the breakdown and absorption of some amino acids, other minerals (such as iron), and the formation of some hormones. It may also help the immune system prevent infections. As an antioxidant it may play a role in prevention of atherosclerosis and some forms of cancer.
Arteries, Veins, Capillaries and The Heart #11Inhalants Cause Allergy
A large number of substances reach the body through breathing or inhalation. The fact that they are introduced through inhalation does not necessarily indicate that the symptoms will be only respiratory; for example, inhaled substances can produce hives, and conversely foods may cause asthma. Air-borne pollen and molds produce seasonal hay fever. house dust is a very important inhalant antigen. animal hairs are frequent offenders, and for this reason allergic patients should avoid contact with or exposure to animals regardless as to whether they are skin sensitive to their. Contact with horses, especially riding behind a horse, or using horse blankets or being in the company of people who wear riding habits may produce severe allergic symptoms.
Arteries, Veins, Capillaries and The Heart #12Hemroid Cure Treatment
Are you looking for hemroid cure treatment? Hemorrhoids are swollen veins in the anal canal. This common problem can be painful, but itís usually not serious.What causes hemorrhoids? Too much pressure on the veins in the pelvic and rectal area causes hemorrhoids. Normally, tissue inside the anus fills with blood to help control bowel movements. If you strain to move stool, the increased pressure causes the veins in this tissue to swell and stretch. This can cause hemorrhoids. Diarrhea or constipation also may lead to straining and can increase pressure on veins in the anal canal.

Copyright (c) 2011 by DRZ
Privacy Policy | Contact Us