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
Naegleria fowleri symptoms Are you looking for Naegleria fowleri symptoms? Naegleria is a microscopic ameba (single-celled living organism) that can cause a very rare, but severe, infection of the brain. The ameba is commonly found in warm freshwater (for example, lakes, rivers, and hot springs) and soil. Only one species (type) of Naegleria infects people: Naegleria fowleri.
No Carb Diet Menu Plan Are you looking for No Carb Diet Menu? Low-carbohydrate diets or low-carb diets are dietary programs that restrict carbohydrate consumption usually for weight control or for the treatment of obesity. Foods high in digestible carbohydrates (e.g. bread, pasta) are limited or replaced with foods containing a higher percentage of proteins and fats (e.g. meat, poultry, fish, shellfish, eggs, cheese, nuts, seeds and peanuts) and other foods low in carbohydrates (e.g. most salad vegetables), although other vegetables and fruits (especially berries) are often allowed. The amount of carbohydrate allowed varies with different low-carbohydrate diets.
Chlamydia Symptoms and Treatment for Men Chlamydia is a bacterial infection disease transmitted when people have sexual relations. It is the most common sexually transmitted disease (STD) in the United States, with over 2.8 million affected individuals each year. Among adults, about 5% of the population is estimated to be infected. Among sexually active adolescent females, about 10% are infected.
Development and Function of Respiratory System In utero the placenta is a substitute for the nonfunctioning foetal lungs. Oxygenated blood comes to the foetus from the placenta via the umbilical vein. Although lungs are not being used for ventilation and oxygenation, the normal foetus makes respiratory movements in utero. These movements have been demonstrated by real time ultrasound and are one of the parameters of the biophysical profile. These “practice” respiratory movements normally do not draw amniotic fluid into the foetal lungs; they are merely small movements of the chest wall. The respiratory system develops from the endoderm (the same tissue that will give rise to the gastrointestinal system) during day 24 of embryonic life. Bronchi are formed by the sixteenth week of foetal development, and there are primitive lungs by 23 week. However, these can function only with great difficulty, since there are not enough alveoli for the necessary exchange of gases. Blood flow to the lungs is also inadequate at this time.
Early Onset Dementia Symptoms Are you looking for early onset dementia symptoms? Familial Alzheimer's disease (FAD) or Early onset Familial Alzheimer's disease (EOFAD) is an uncommon form of Alzheimer's disease that usually strikes earlier in life, defined as before the age of 65 (usually between 50 and 65 years of age, but can be as early as 15) and is inherited in an autosomal dominant fashion, identified by genetics and other characteristics such as the age of onset. It accounts for approximately half the cases of early-onset Alzheimer's disease. Familial AD requires the patient to have at least one first degree relative with a history of AD. Non-familial cases of AD are referred to as "sporadic" AD, where genetic risk factors are minor or unclear.
Plantar Fasciitis Treatment The plantar fascia can be involved with plantar fasciitis as it inserts into the calcaneus and also the Achilles tendon as it inserts into the back of the calcaneus. These are very common problems. If there is any sense that it is chronic inflammatory in nature and there are other systems involved, really think of a spondyloarthropathy because these areas are very commonly involved with things like ankylosing spondylitis and the like. But I do see patients occasionally and that’s all they have. They just have Achilles tendonitis or plantar fasciitis. Sometimes you can even get bursal inflammation although it’s very difficult to differentiate from direct tendon involvement. But plantar fasciitis, again the most common situation I see is someone who walks a lot. Mail carriers. They start out with a 50 pound bag of mail and it’s hard on their feet. They just walk around and deliver mail all day. But anybody who is on their feet a lot, walking, carrying extra weight, and the pain is usually in the sort of medial aspect of the bottom of the calcaneus. It’s not dead center, because that’s not where the plantar fascia inserts.
Erythema Multiforme and Stevens Johnson Syndrome Erythema multiforme (EM) is an acute hypersensitivity reaction characterized by distinctive skin lesions and mucous membrane involvement that has a spectrum of severity. It occurs in two forms: the more common "minor" type and the more severe "major" type, also called Stevens-Johnson syndrome (SJS). Sometimes EM includes toxic epidermal necrolysis (TEN) or Lyell disease. EM minor first was described completely by von Hebra in 1866; Stevens and Johnson described the major variant in 1922. EM occurs more often in males, and 20% to 50% of cases occur in the pediatric age group, although rarely in those younger than age 3 years. A winter predominance is suggested.
The pathologic process responsible for EM is unknown. A review of the literature generates an extensive list of causative or inciting agents. Most frequently mentioned are sulfonamide antibiotics and anticonvulsants, both used commonly in pediatric practice. Malignancies, radiotherapy, autoimmune diseases, and infectious agents such as mycoplasma also have been implicated as possible causes. In 1992, Weston et al described a high incidence of herpes simplex virus (HSV) in EM lesions among both adults and children with or without a preceding history of HSV infection.
Treacher Collins Syndrome Pictures Treacher–Collins syndrome (TCS), also known as Treacher-Collins–Franceschetti syndrome, or mandibulofacial dysostosis is a rare autosomal dominant congenital disorder characterized by craniofacial deformities, such as absent cheekbones.Treacher-Collins syndrome is found in about 1 in 10,000 births. In a number of cases a genetic origin is described.
This gene controls development of the bones and other structures of the head and neck. When the gene is faulty, the facial bones don't develop as they should in the womb and a baby is born with characteristic facial features. The extent of these abnormalities varies from person to person, but they often cause problems with hearing, breathing and eating.
Anxiety Treatment Guide Discontinue caffeinated beverages and avoid excess alcohol. Daily exercise and adequate sleep (with the use of medication if necessary) should be advised.
Ovarian Cancer Staging and Treatment Are you looking for article about ovarian cancer staging and treatment? Here is good stuff about ovarian cancer staging and treatment.
The FIGO staging classification scheme for ovarian cancer is outlined in the box, page 42. The staging of advanced disease (spread throughout the abdomen) may be obvious to most physicians, but it is important for a surgeon to be meticulous in the staging of early ovarian cancer. In one study it was found that one third of patients referred with stage I or stage II disease were actually found to have stage III disease when the appropriate staging operation was performed. Similar results have been reported by other researchers.
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.
Over the counter ringworm treatment for kids Are you looking for over the counter ringworm treatment for kids? What will you do if you see red itchy patches on your body? It may be a case of ring worm infection. It may sound bad, but it can be cured easily with over-the-counter ringworm treatment.
Ringworm is a common skin infection caused by a fungus. The fungi feeds on the dead cells of skin and hair causing a ring of irritated itchy skin that looks like a worm. This may cause a rash and becomes sore. It may appear as scalp ring worm, body ringworm, face ring worm or groin ringworm.
Smoking effects for reproduction of women In all of its dimensions the reproductive process is impaired by the use of tobacco, particularly cigarette smoking. Problems can be found in association with infertility, problem pregnancy, breastfeeding, and the health of the new born.