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When overheating, the temperature of the part rises above the operating temperature. Overheating can take place: if heat is produced in more than expected amount (such as in cases of short-circuits, or applying more voltage than rated), or; if heat dissipation is poor, so that normally produced waste heat does not drain away properly.
Arteriosclerosis, literally meaning "hardening of the arteries", is an umbrella term for a vascular disorder characterized by abnormal thickening, hardening, and loss of elasticity [3] of the walls of arteries; [4] this process gradually restricts the blood flow to one's organs and tissues and can lead to severe health risks brought on by atherosclerosis, which is a specific form of ...
The waves recorded are displayed as an image of the blood vessel and the speed of waves detected can be used to calculate the speed of blood flow inside the vessel. [20] When the rate of blood flow is too low, there may be a blockage of vessel. By evaluating blood flow in vessels, the severity and specific location of blood vessel disorder can ...
The rate of mean blood flow depends on both blood pressure and the resistance to flow presented by the blood vessels. Mean blood pressure decreases as the circulating blood moves away from the heart through arteries and capillaries due to viscous losses of energy.
Functional hyperaemia is an increase in blood flow to a tissue due to the presence of metabolites and a change in general conditions. When a tissue increases its activity, there is a well-characterized fall in the partial pressure of oxygen and pH, along with an increase in partial pressure of carbon dioxide, and a rise in temperature and the concentration of potassium ions.
When environmental temperature is above core body temperature, sweating is the only physiological way for humans to lose heat. [10] Arteriolar vasodilation occurs. The smooth muscle walls of the arterioles relax allowing increased blood flow through the artery. This redirects blood into the superficial capillaries in the skin increasing heat ...
Otherwise an electrocardiogram, blood work to check the heart, and urine testing for signs of muscle breakdown may be performed. [9] Management may involve resuscitation, pain medications, wound management, and heart rhythm monitoring. [9] Electrical injuries affect more than 30,000 people a year in the United States and result in about 1,000 ...
The increase in pulse pressure may result in increased damage to blood vessels in target organs such as the brain or kidneys. [23] [24] This effect may be exaggerated if the increase in arterial stiffness results in reduced wave reflection and more propagation of the pulsatile pressure into the microcirculation. [23]