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
Plague Sympyoms, Treatment and Prevention Bubonic plague, is transmitted to humans through direct or indirect contact with animals. At least three great epidemics of bubonic plague have been recorded, including the Black Death of the 14th century, when the disease claimed at least 50 million lives. While recent cases of the plague in North America have been relatively rare, cases still occur in the western United States. Increased outdoor activity in those areas has resulted in a higher incidence of the disease among humans in recent years.
Progeria Information and Facts Are you looking for progeria information and facts? here is some information about progeria.
Progeria is an extremely rare genetic condition wherein symptoms resembling aspects of aging are manifested at an early age. The word Progeria comes from the Greek words "pro" means "before" and "géras" means "old age". The disorder has very low incidences and occurs in an estimated 1 per 8 million live births. Those born with progeria typically live to their mid teens and early twenties. It is a genetic condition that occurs as a new mutation (de novo), and is not inherited. Although the term progeria applies strictly speaking to all diseases characterized by premature aging symptoms, and is often used as such, it is often applied specifically in reference to Hutchinson-Gilford Progeria Syndrome.
Characteristics of Anxiety Anxiety is an emotion and a subjective individual experience. It is an energy and therefore cannot be observed directly. A nurse infers that appetent is anxious based on certain behavior. The nurse needs to validate this with the patient. Also anxiety is an emotion without a specific object. It is provided by the unknown and precedes all new experiences such as entering school, starting a new job, or giving birth to a child.
The characteristic of anxiety differentiates it from fear. Fear is are individual ideation with specific source or object that the person can identify and describe. Fear involves the intellectual appraisal of a threatening stimulus, anxiety involves the emotional response to that appraisal. A person generally fears a set of circumstances that may occur at same point in the future. A fear is caused by physical or psychological exposure to a threatening situation. Fear produces anxiety. The two emotions are differentiated in speech, we speak of having a fear but of being anxious.
Listeria symptoms during pregnancy Are you looking for listeria symptoms during pregnancy? Listeria infection is a food-borne illness that can be very serious for pregnant women and people with impaired immune systems. Listeria infection is most commonly contracted by eating improperly processed deli meats and unpasteurized milk products.
Pulmonary Embolism Symptoms and Prevention Pulmonary embolism is a condition in which a part of blood clot in a vein breaks away and travels through the heart and into the pulmonary circulatory system. Here the vessels leading from the heart branch like a tree, gradually becoming smaller until finally they form capillaries, the smallest blood vessels. Depending on its size, the clot will at some point reach a vessel through which it cannot pass, and there will lodge itself. The clot disrupts the blood supply to the area supplied by that vessel. The larger the clot, the greater is the area of lung that loses its blood supply, and the more drastic the results to the patient.
How HIV Is Transmitted HIV typically enters one person’s body when another person’s infected body fluids (semen, vaginal secretions, blood, etc.) gain entry through a breach in body defenses. Mucous membranes of the genital organs and the anus provide the easiest route of entry. If there is a break in mucous membranes (as can occur during sexual intercourse, particularly anal intercourse), the virus enters and begins to multiply.
What are Water Functions Next to air, water is the substances most necessary for survival. Most everything in the body occurs in a water medium. Although people can live without vitamins and minerals for extended periods, death result within a few day without water.
Water makes up about 60% of the body's weight. Every cell in the body is bathed in water of the exact composition that is best for it. Even tissues that are not thought of as "watery" contain large amounts of water. Fo example, water makes up about 75% of brain and muscle tissues; bone tissue and fat tissue are about 20% water. As a lee the bodies of women. Men have more muscle tissue, and muscle tissue holds more water that fat tissue, which is more prominent in the bodies of women.
Campomelic Dysplasia Treatment, Pictures and life expectancy Camptomelic dysplasia is a genetic disorder, camptomelic or campomelic refer to the bowing of the femur and tibia, (campto meaning bent and melia refers to the limbs) commonly seen in this disorder.
A mutation in the gene coding for the transcription factor Sox9, localized to chromosome 17, results in camptomelic dysplasia, which is marked by anomalies of the ribs and vertebral column and bowing of the long bones. Sox9 controls transcription of Type II collagen and the proteoglycan aggrecan, and is also related to sex reversal. Genetically male (XY) individuals appear phenotypically female, because SOX9 is not able to fulfill its role in sex determination (testis development).
Heart Failure Physical Examination Your medical history includes anything about your past and present health-conditions you used to have or conditions you have now. Tell your doctor about medical problems of any type, including any surgery that you have had. When giving your doctor your medical history, be complete and detailed in your descriptions. Even if an illness is completely gone or does not seem important to you, knowing about that problem may help your doctor diagnose heart failure. Also, knowing all of your past and present medical problems will help your doctor decide the best way to care for your condition.
Dementia stages symptoms Are you looking for dementia stages symptoms? Dementia is a serious loss of cognitive ability in a previously unimpaired person, beyond what might be expected from normal aging. It may be static, the result of a unique global brain injury, or progressive, resulting in long-term decline due to damage or disease in the body. Although dementia is far more common in the geriatric population, it can occur before the age of 65, in which case it is termed "early onset dementia".
Symptoms of dementia can be classified as either reversible or irreversible, depending upon the etiology of the disease. Less than 10% of cases of dementia are due to causes that may presently be reversed with treatment. Causes include many different specific disease processes, in the same way that symptoms of organ dysfunction such as shortness of breath, jaundice, or pain are attributable to many etiologies.
Transient ischemic attacks Symptoms and Treatment Transient ischemic attacks (TIAs) are neurogical deficits (such as loss of vision in one eye, inability to speak, paralysis, or weakness of one side of the body) of sudden onset that last for less than 24 hours. Although they are symptomatically similar to minor strokes, they do no discernible lasting damage to brain function.
The major importance of TIAs is their role as a predictor of stroke. When a person describes a “light stroke”, it is often a TIA that is meant. If left untreated, TIAs can indeed lead to major strokes, with permanent damage to all parts affected.
Hypertension treatment food and nutrients When pressure exerted by blood on the walls of the arteries is greater than normal, blood pressure rises. Usually, blood pressure falls when at rest. It rises in response to strenuous physical activity, stress, or a perceived danger in which the sympathetic nervous system dominates, arteries constrict and more blood is sent to the brain increasing blood pressure. This heightened state of the sympathetic system does not seem to retreat in individuals with hypertension and damage to the heart, kidney, arteries, and other organs becomes inevitable.
Blood pressure is considered high at a reading of 140/90. There are no symptoms of the illness and it is recommended individuals over 40 be checked. Hypertension can be controlled by permanent diet and lifestyle changes; this includes reducing stress, maintaining proper weight (not more than 5 lb overweight), and eating foods containing compounds that reduce blood pressure such as celery, garlic, and fresh fruits and vegetables. Having a home monitor is helpful. Smoking, alcohol, refined sugar, food allergies, and high sodium foods can contribute to hypertension. Some people may need extra calcium to stabilize blood pressure. Some individuals are salt sensitive which cause a rise in their blood pressure. Daily exercises and various stress reduction techniques lower systolic and diastolic blood pressure.
Cerebral Palsy Definition Sign and Treatment Cerebral Palsy Definition
Cerebral palsy (CP) is an umbrella term encompassing a group of non-progressive, non-contagious motor conditions that cause physical disability in human development, chiefly in the various areas of body movement.