Blood pressure is a descriptor of the force that blood exerts on the walls of arteries through which it travels, and this pressure varies with the rhythmic contractions of the separate parts of the heart. Systolic pressure occurs when the cardiac muscles on the atrial or ventricular portion of the heart tighten to either move blood from the atria to the ventricles or expel blood from the heart. The ventricular systole, which pushes blood out of the ventricles into the pulmonary artery and aorta, is the strongest and most noticeable of the two and results in the highest pressure change in arteries. A pause between the systolic contractions is called the diastole, when the heart is at rest and the atria are filling up with blood; no events take place to raise the blood pressure at this time. The blood pressure during the systolic and diastolic phases of the heart rhythm can be measured by a...
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... possible that any discomfort induced by less sunlight, or the lifting of depression with the onset of warmer weather can have an effect on blood pressure. The amount of cloud cover is related to air pressure, since lower air pressures allow moisture to rise into the higher atmosphere and condense into clouds, and vice versa; this would vindicate my grandmother 's opinion that blood pressure and weather, including both atmospheric conditions and barometric pressure, are connected after all, albeit the relationship will prove to be an indirect one and through a different cause-and-effect system from her assertions. For this reason, this study will record both the blood pressure and mood of an individual in conjunction with weather conditions relating to temperature and barometric pressure for the purpose of elucidating if any relationships exist between these factors.
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- High Blood Pressure High Blood Pressure is anything that alters in peripheral vascular resistance, heart rate, or stroke volume that affects systematic arterial blood pressure. Long term effect of high blood pressure are serious and can cause heart attacks, strokes, kidney failure, and retinal damage. Hypertension is another medical word that substitutes the meaning of high blood pressure. It is known as the “silent killer” because it does not create any symptoms. The most common reason for high blood pressure is arteriosclerosis.... [tags: Blood pressure, Blood, Hypertension, Artery]
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975 words (2.8 pages)
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823 words (2.4 pages)
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