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Why blood pressure is expressed with two number?
When a blood vessel (like an elastic pipe) is empty there is no pressure on its wall. When there is blood flowing in a blood vessel it exerts pressure on the walls of the blood vessel (pipe). This is the basal pressure called the Diastolic pressure (The lower of the two numbers). When the heart pumps blood it drives the blood with force and this exerts higher pressure on the walls of the blood vessel. This is called the Systolic pressure, the higher number in the blood pressure measurement. Thus, Blood Pressure of 120/70 means the systolic pressure is 120 and the diastolic pressure is 70.
What is the layer in the wall of an artery that helps maintain blood pressure?
smooth muscle and elastic connective tissue
What are the elastic properties of air?
Air is a compressible fluid, which means it can be compressed or expanded when subjected to pressure changes. This property is known as the compressibility of air. Additionally, air also exhibits elastic properties in terms of its ability to transmit sound waves and vibrations.
What are the names of the upper and lower blood pressure readings?
Blood pressure is the pressure of what the blood exerts on the walls of the blood vessels. The pressure, that the blood exerts on the wall of the blood vessel, depends on the the heart. When the heart (ventricles) contract, the blood is forced out and into the arteries. Since the blood it forced, the pressure is high. That gives you the higher reading, and it is called SYSTOLE. When the heart relaxes between contractions, blood is not forced into the artieries. But, the elastic walls of the arteries - which were streched by the force of the contraction before -, recoils, applying the pressure to the blood. That way the the blood keep flowing. Since this pressure is less then the pressure what the contraction gives, the reading will be lower. That lower reading is called DIASTOLE.
How is the structure of an artery related to it's function?
The structure of an artery is closely related to its function of transporting blood under high pressure. Arteries have thick, elastic walls composed of smooth muscle and connective tissue, allowing them to withstand and regulate the high pressure generated by the heart's contractions. The elasticity enables them to expand and recoil, which helps maintain blood flow and pressure during the diastolic phase of the cardiac cycle. Additionally, the narrow lumen of arteries helps facilitate efficient blood transport to various tissues throughout the body.
Why is it important that the arteries have elastic walls?
The elastic walls helps regulate blood pressure.
What is the elastic recoil of the aorta on a graph?
If you see the cardiac cycle and you see the dichrotic notch, and there is a slight elevation of the aortic pressure after this notch, that's because of the pressure exerted by the elastic recoil of the aorta. Just imagine a bigger hill, followed by a smaller hill and the indentation between these two hills is the dichrotic notch and the hill after this notch is the graphic representation of the elastic recoil of the aorta. Hope this helps.
Do arteries have rigid walls?
Arteries do not have rigid walls; instead, they have elastic walls that allow them to stretch and accommodate the high pressure of blood being pumped from the heart. This elasticity helps maintain blood flow and pressure throughout the circulatory system. In addition to being elastic, arteries also have muscular layers that can constrict or dilate to regulate blood flow.
Can an elastic material be squashed?
Yes, an elastic material can be squashed or compressed under pressure. However, since elastic materials have the ability to return to their original shape after the force is removed, they will bounce back to their initial form once the pressure is released.
What is a sentence for elastic?
I sleep on a cheap bed with a tempur type, visco elastic foam 2 " overlay that eases pressure points. It has an elastic waistband that fits sizes 8 to 12 waist. .
What blood vessels have elastic quality?
The conducting arteries, which are the high pressure arteries (eg. aorta and pulmonary), are high in elastic fibres. These fibres store energy to help to push blood forward during diastole (heart relaxation).
What are the best techniques for using elastic bands for sewing projects?
The best techniques for using elastic bands in sewing projects include measuring and cutting the elastic to the correct length, securing the ends of the elastic before sewing, and stretching the elastic as you sew to ensure a snug fit. Additionally, using a zigzag stitch or a stretch stitch on your sewing machine can help the elastic maintain its stretchiness.
