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
Tinnitus Treatment Homeopathic Tinnitus is the perception of sound within the human ear in the absence of corresponding external sound.
Tinnitus is not a disease, but a symptom that can result from a wide range of underlying causes: abnormally loud sounds in the ear canal for even the briefest period (but usually with some duration), ear infections, foreign objects in the ear, nasal allergies that prevent (or induce) fluid drain, or wax build-up. Withdrawal from a benzodiazepine addiction may cause tinnitus as well. In-ear headphones, whose sound enters directly into the ear canal without any opportunity to be deflected or absorbed elsewhere, is a common cause of tinnitus when volume is set beyond moderate levels.
Hiatus Hernia Treatment The term hiatus hernia describes diaphragmatic hernia or weakness in the diaphragm, the horizontal muscular wall separating the organs of the chest from the organs of the abdomen. A hernia is an abnormal protrusion of an organ or tissue through an opening. A hiatus, or opening, permits the esophagus to carry food from the mouth to the stomach. Blood vessels and nerves also pass through the diaphragm. The diaphragm is an important group of muscles for contracting and expanding the lungs, forcing air in and out of the lung tissues.
Guidelines for Exercise in the Cold Problems related to exercise in cold weather include frostbite and hypothermia (abnormally low body temperature). Frostbite can lead to permanent damage loss of a body part from gangrene. This can be prevented by adequately protecting exposed areas, such as fingers, the nose, ears, facial skin, and wrists. A stocking hat is preferable for two reasons: (1) blood vessels in the scalp do not constrict effectively, so a significant amount of heat is lost if a head covering is not worn, and (2) a stocking-type hat can be pulled down to protect the ears. In very cold or windy weather, you can use surgical or ski masks and scarves to keep facial skin warm and to moisten and warm inhaled air. All exposed or poorly protected flesh is vulnerable to frostbite when the temperature is low and the wind chill high.
How to Reduce Fever Fast in a child Fever in Infants and Children
A normal temperature is about 98.6°F (37°C) when taken orally (in your child’s mouth) and 99.6°F (37.5°C) when taken rectally (in your child’s bottom). Many doctors define a fever as an oral temperature above 99.5°F (37.5°C) or a rectal temperature above 100.4°F (38°C).
Causes of Migraine Headache and Symptoms Migraine affects 15% to 17% of women and 6% of men. Headaches can generally
be grouped into three major categories: migraine, tension-type, and organic.
Migraine headaches are usually unilateral, and the acute attack typically
lasts from 4 to 24 hours. Migraine headaches can occur with an aura or without
an aura. The aura may consist of focal neurologic symptoms starting 5 to 30
minutes before onset of an acute headache attack.
What is Marijuana and the Effects on Brain and Body Approximately 25 years ago, marijuana became a cultural phenomenon, the symbol of one generation's disregard for another. The marijuana found on the streets at that time, however, lacked the potency of current crops. Crossbreeding of more potent variates, improved cultivation, and the part of the plant being used all contribute to increased levels of the delta90-tetrahydrocannabinol (THC), the major psychoactive drug found in marijuana. Some marijuana currently grown in the United States rivals the previously stringer varieties of Mexico, Jamaica, and other areas. The THC percentage of Cannabis saliva (the Indian hemp plant which marijuana is derived) in plants grown in the United Sates can range from 2% to as high as 7%. The higher the percentage of THC , the more potent the drug. Marijuana is composed of the dried leaves and flowering tops of the cannabis plant. Hashish, which has stronger effects, is processed from called hash oil. Marijuana is seed motor extensively than hashish in the United States.
Flexeril dosage and usage Flexeril (cyclobenzaprine) is a muscle relaxant. It works by blocking nerve impulses (or pain sensations) that are sent to your brain. Flexeril is used together with rest and physical therapy to treat skeletal muscle conditions such as pain or injury. Flexeril may also be used for other purposes not listed in this medication guide.
Retrograde uterus pregnancy and fertility What is retrograde uterus definition?A retroverted uterus (tilted uterus, tipped uterus) is a uterus that is tilted backwards instead of forwards. This is in contrast to the slightly "anteverted" uterus that most women have, which is tipped forward toward the bladder, with the anterior end slightly concave.
Between 1 in 3 and 1-in-5 women (depending on the source) has a retroverted uterus, which is tipped backwards towards the spine.
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.
Family Health Nursing “Family health nursing is the practice of nursing directed towards maximizing the health and well-being of all individuals within a family system. It incorporates two views of family; family as a unit of care and family as a system existing within larger system. Levels of intervention are individuals the personal, the family system, and the environmental level. The goals of the family health nursing include optimal functioning for the individual and for the family as a unit.”
The family as a unit of care means that the entire family is the recipient of nursing intervention. This view point recognizes the mandate in the standards of community health nursing’s practice that identifies clients as individuals, families and communities. In contrast, the family as context recognizes the impact the family has on an individual. This viewpoint underscores the need to understand the family environment in which the individual exists.
Circulation System Function and Information The Heart, Blood, and Blood Vessels
Circulation is better understood if you are familiar with the basic anatomy and function of the heart. The heart consist o cardiac muscle and weighs between 8 and 10 ounces. It is about the size of a fist and lies in the center of the chest. The heart is divided into two halves, or pumps, by a wall (the septum), and each half is subdivided into an upper chamber (the atrium) and a lower chamber (he ventricle). The right heart, or pulmonary pump, receives deoxygenated blood from the tissues and transports it to the lungs so that carbon dioxide can be exchanged for a fresh supply of oxygen. From the lungs, the oxygen-rich blood is sent to the left heart, or systemic pump, so that the oxygenated blood can be transported to all the tissues or the body. Both pumps work simultaneously. The systemic pump carries the heavier workload of the two and thus has a more muscular ventricular wall.
Hypertension Symptoms Diagnosis and Treatment High blood pressure is defined as a systolic BP ≥ 140 or a diastolic BP > 90
on more than two occasions (see Table 3.5). Hypertension is associated with
MI, heart failure, stroke, and kidney disease and has a higher prevalence
among ethnic minorities, in women, and with ↑ age. As a screening measure,
BP should be checked at least every two years starting at age 18.
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