April 20th, 2010 by Admin
Hypertension can wreck havoc on many body organs. Its effects on the heart are especially damaging. High blood pressure and heart disease are closely connected.
Moderate to high blood pressure significantly increases the load on the left side of the heart. Arterioles are often diseased or constricted, which increases resistance to blood flow. When this happens, the heart has to work much more to pump blood into the arterial system including the aorta.
When any muscle is overused, it tends to increase in size and bulk. The heart muscles react the same way. An enlarged heart is a sign of trouble.
Heart enlargement can be detected in several ways. A chest x-ray can reveal it. So can an electrocardiogram or even a physical examination.
In many high blood pressure patients, the walls of the left ventricle thicken. This increases the workload on the heart. Eventually, the heart falters and the left side of the heart no longer pumps blood adequately.
When this happens, major organs and tissues of the body are denied sufficient blood supply. The affected person becomes lethargic and weak.
Because of the higher pressure in the left ventricle, blood from the lungs cannot drain into the top compartment of the heart (the atrium). As a result, the lung tissues get congested which brings on bouts of breathlessness and coughs.
The patient may have a dry cough or even frothy phlegm with blood stains in it. This is a very scary experience to the sufferer and onlookers. In an acute attack, it seems to the patient that he or she is choking to death.
Breathlessness due to heart problems may be first noticed during prolonged physical exertion. If the condition has progressed further, breathlessness may occur even while resting.
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February 24th, 2010 by Admin
For us, the human cardiovascular system looks as follows: Oxygenated blood is pumped from the left ventricle of the heart into the aorta. Conclusion The cardiovascular system of animals consists of the heart and blood vessels. The blood that is returned to the heart is then recycled through the cardiovascular system. cardiovascula´re [TA] the cardiovascular system: the heart and blood vessels; see under system. The cardiovascular system includes the heart and the blood vessels. The cardiovascular system (CVS) consists of the heart, lungs and blood vessels, and the blood that circulates through them. Blood pressure is normally directly proportional to the volume of blood within the cardiovascular system. The circulatory system or cardiovascular system is the organ system which circulates blood around the body of most animals. The cardiovascular system includes the heart, lungs, blood vessels and a gallon and a half of blood. Also, the cardiovascular system detects this as acute blood loss so the pulse increases to maintain cardiac output. Gary Farr 5/28/2002 The cardiovascular system is made up of the heart and all of the blood and lymphatic vessels in the body. Includes health- and research-related information on the cardiovascular system, the lungs, and blood.
Obesity may affect the cardiovascular system because of the increased workload the additional body mass places on the heart. >Cardiovascular DiseasesKarolinska InstituteInternational index of links related to diseases and disorders of the heart and vascular system. The heart is the pump that drives the cardiovascular system. Cardiologist A cardiologist is a physician who specializes in the heart and cardiovascular system. Ginkgo biloba can help the body neutralize toxins, as it is a potent antioxidant.(14,15) Hawthorn berries strengthen the heart and entire cardiovascular system. EFAs also nourish the cardiovascular system by enhancing proper oxygen flow to the heart. Heart Formula is designed to support your entire cardiovascular system, including the heart, arteries and veins. Heart Embryologically the heart, like the rest of the cardiovascular system, develops from a tubular channel.
We also studied the transient response of the cardiovascular system to sudden gravitational stress. Exercising, getting enough sleep, practicing relaxation techniques, and thinking positively are a few methods to help reduce stress and keep the cardiovascular system healthy. In a healthy cardiovascular system, there is a fine balance between nitric oxide and oxidative stress … Introduction: The detrimental effects of stress on the cardiovascular system have been documented through research in animal models and humans. Promote the application and development of genomics, proteomics, and imaging tools to study brain-cardiovascular system interactions under conditions of stress. Primarily two systems mediate the stress response, by exerting an acute influence on cardiovascular function: the hypothalamic-pituitary-adrenocortical (HPA) axis and the sympatho-adrenomedullary system (SAS). Recommendations: The working group underscored the biological differences between acute and chronic stress on the cardiovascular system.
Receptors, signaling, gene regulation and protein expression as related to the differentiation and development of the embryonic and fetal cardiovascular systems. During embryonic development there is extensive remodelling of the initially r/l symetrical cardiovascular system and a contribution from the neural crest to some vessels. The second section has eight chapters that summarize cardiovascular development in invertebrate and vertebrate systems. Introduction The development of the cardiovascular system is an early embryological event.
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February 3rd, 2010 by Admin
One of the more common treatments for high blood pressure are ACE inhibitors. When your kidneys detect low blood pressure, they release an enzyme called renin, which stimulates the formation of a protein called angiotensin I. Angiotensin I is then converted by the angiotensin-converting enzyme (ACE) in the lungs to a very potent chemical called angiotensin II. Angiotensin II is a powerful blood vessel constrictor that causes muscles surrounding the blood vessels to contract, resulting in narrowing of the blood vessels. This narrowing of the vessels increases pressure in the vessels and can result in high blood pressure .
The ACE Inhibitors block the action of the angiotensin-converting enzyme in the lungs so that angiotensin I is not converted into angiotensin II. This allows blood vessels to remain widened, which results in lowering of the blood pressure. ARBs block the action of angiotensin II itself, so that vessels dilate, making it easier for the heart to pump blood, and results in lower blood pressure .
The natural bio active casein hydro lysate tripeptide’s in Melaleuca’s ProStolic™ act as a natural blocker to the formation of angiotensin II. Also included in this proprietary blend is pomegranate juice powder, which inhibits activity of the angiotensin-converting enzyme as well. A third ingredient is passion flower extract. Although researchers don’t know exactly how passion flower works, they believe that flavonoid and alkaloid compounds in the plant regulate the neurotransmitters in your nervous system that reduce anxiety. One of these flavonoids in particular, chrysin, helps to calm your central nervous system and lower your blood pressure.
Combined with the proprietary blend of tripeptide’s, pomegranate juice powder and passion flower extract, ProStolic™ also contains potassium and calcium to provide a well-rounded natural remedy to help promote healthy blood flow and naturally maintain healthy blood pressure, but without the side effects so common with medications.
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January 15th, 2010 by Admin
Of all the organs of our body the heart is without doubt the most critical and rightly so as, if it stops pumping blood around the body and delivering vital oxygen to the other organs, including the brain, death will occur very quickly.
Despite its importance however many of us pay little if any attention to the health of our heart until forced to do so, when it is often too late. And yet keeping a check on the heart by simple routine measurement of our blood pressure could not be easier.
As with most things in life, if the heart starts to run into problems then there will be warning signs giving us time to take remedial action and these warning signs often come in the form of abnormally high or low blood pressure.
The principle role of the heart is to take freshly oxygenated blood and pump it through the main arteries and then through a network of smaller blood vessels to all parts of the body. As the heart contracts forcing blood out into the arteries pressure is exerted on the walls of the arteries. Then, as the heart relaxes and its chambers refill ready to pump again the pressure in the arteries falls.
By measuring these two pressure levels we can get an indication of just how well the heart is pumping blood around the body and thus see whether or not it is working normally.
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