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
Best Heart Rate Monitor Reviews If you're trying to get in shape and lose weight, a heart rate monitor is an excellent way to monitor your intensity and see how many calories you're burning. The following list offers a wide variety of choices, from the exerciser who wants something simple to the multi-sport athlete who wants all the bells and whistles. These heart rate monitors have gotten some of the best reviews out there for functionality and quality.
Arteries of the Body Function and Pictures Arteries facts
Arteries are vessels that conduct blood away from the heart
Arteries transport oxygenated blood under pressure to the cells of the
body. (The pulmonary artery is an exception; it transports deoxygenated blood
to the lungs)
The arterial wall consists of three primary layers:
The innermost layer consists of simple squamous epithelium (the endothelium)
surrounded by a connective tissue basement membrane with elastic fibers.The
middle layer consists mainly of smooth muscle and is usually the thickest layer.
It not only provide support for the vessel but also changes vessel
diameter to regulate blood flow and blood pressure.The outermost layer,
which attaches the vessel to the surrounding tissue, consists of connective
tissue with varying amounts of elastic and collagen fibers.
Beta carotene foods and benefits (provitamin A) Vitamin A comes in several forms, such as preformed retinoids found in animal products that are ready for use by the body and carotenoids found in plants. Carotenoids are called provitamin A because they must first be converted to the retinoid form if they are to be used for vitamin A functions. More than 600 carotenoids are found in nature; 50 of them have potential vitamin A activity. The most potent form is beta-carotene. The retinoids and carotenoids combine to form what is generally referred to as vitamin A.
Cold Sore Treatment Over the Counter Are you looking for cold sore treatment over the counter?A cold sore and a canker sore can come from the same herpes simplex virus, but they aren't the same thing. A cold sore is a small- to medium-size blister that appears on or around the mouth area. Cold sores can also appear in the nose. A canker sore is a virus-induced blister that is on the inside of the mouth. It usually takes 2 days to 2 weeks to heal. A cold sore, besides being red and painful, can also leak fluid.
Reasons For Drug Use A drug is any chemical substance that can alter the structure and function of a living organism. People use drugs for many reasons. Some individuals need drugs for health reason-to maintain a normal life or to alleviate specific symptoms or complications of diseases or other conditions. Other people indulge in drugs to alter their moods.
Gastroenteritis Symptoms in Children If gastroenteritis in a child is severe enough to require admission to a hospital, then it is important to distinguish between bacterial and viral infections. Bacteria, Shigella and Campylobacter, for example, and parasites like Giardia can be treated with antibiotics.
A child with gastroenteritis may be lethargic, suffer lack of sleep, run a low fever, have signs of dehydration (which include dry mucous membranes), tachycardia, reduced skin turgor, skin color discoloration, sunken fontanelles, sunken eyeballs, darkened eye circles, glassy eyes, poor perfusion and ultimately shock.
How is an endometrial biopsy done An endometrial biopsy is often done in the doctor’s office, usually without anesthesia. Although the procedure is quickly accomplished, it is painful.
If a physical does not have nitrous oxide available in his or her office, the patient can be given strong pain pills to use before coming to the office. A paracervical block can be also be used.
Clozapine Side Effects Management Clozapine (sold as Clozaril, Azaleptin, Leponex, Fazaclo, Froidir; Denzapine, Zaponex in the UK; Klozapol in Poland, Clopine in Australia and New Zealand) is an antipsychotic medication used in the treatment of schizophrenia, and is also used off-label in the treatment of bipolar disorder. Wyatt. R and Chew. R (2005) tells us there are three pharmaceutical companies that market this drug at present: Novartis Pharmaceuticals (manufacturer), Mylan Laboratories and Ivax Pharmaceuticals (market generic clozapine). The first of the atypical antipsychotics to be developed, it was first introduced in Europe in 1971, but was voluntarily withdrawn by the manufacturer in 1975 after it was shown to cause agranulocytosis, a condition involving a dangerous decrease in the number of white blood cells, that led to death in some patients. In 1989, after studies demonstrated that it was more effective than any other antipsychotic for treating schizophrenia, the U.S. Food and Drug Administration (FDA) approved clozapine's use but only for treatment-resistant schizophrenia.
Heat Stroke Prevention Tips Each summer we hear about athletes suffering serious heat illness, particularly heat stroke, during recreational running events, marathons and fun runs. In order to prevent becoming a statistic, it's helpful to learn about the most common types of heat illness and take precautions if you exercise in hot weather. Here is some tips for heat stroke prevention.
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Bunion surgery recovery and photos Are you looking for Bunion surgery recovery and photos? Bunion surgery generally involves an incision in the top or side of the big toe joint and the removal or realignment of soft tissue and bone. This is done to relieve pain and restore normal alignment to the joint. If the joint is severely deformed, it may be stabilized with tiny wires, stitches, screws, or plates. There are no guarantees that a bunion surgery will fully relieve your pain.
Iron deficiency symptoms eyes Are you looking for iron deficiency symptoms eyes? Iron deficiency (sideropenia or hypoferremia) is one of the most common of the nutritional deficiencies. Iron is present in all cells in the human body, and has several vital functions. Examples include as a carrier of oxygen to the tissues from the lungs in the form of hemoglobin, as a transport medium for electrons within the cells in the form of cytochromes, and as an integral part of enzyme reactions in various tissues. Too little iron can interfere with these vital functions and lead to morbidity and death.
Spinal Stenosis Definition and Treatment What is defintion of Spinal Stenosis. Spinal stenosis is a narrowing of one or more areas in your spine — most often in your neck or lower back. This narrowing can put pressure on the spinal cord or spinal nerves at the level of compression. Stenoses of the vascular type are often associated with unusual blood sounds resulting from turbulent flow over the narrowed blood vessel. This sound can be made audible by a stethoscope, but diagnosis is generally made or confirmed with some form of medical imaging.
aortic stenosis (AS) a narrowing of the aortic orifice of the heart or of the aorta near the valve.
hypertrophic pyloric stenosis narrowing of the pyloric canal due to muscular hypertrophy and mucosal edema, usually in infants.