The blood speed in a normal segment of a horizontal artery is 0.116 m/s. An abnormal segment of the artery is narrowed down by an arteriosclerotic plaque to 1/4 of its normal cross-sectional area. What is the difference in blood pressure between the normal and constricted segments of the artery? Number Units
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- Blood pressure is measured when the blood is pumping (systolic) and when the heart is resting (diastolic). When pressure readings are given, the systolic is given first, and healthy blood pressure is around 120 over 80 mm Hg. Recall the density of mercury is 13.6 × 103 kg/m3. a. Suppose you have a blood pressure reading of 116 over 82 mm Hg. What is your systolic pressure, in newtons per meter squared? b. Suppose you have a blood pressure reading of 116 over 82 mm Hg. What is your diastolic pressure, in newtons per meter squared?The drawing shows an intravenous feeding. With the distance shown, nutrient solution (p = 1020 kg/m³) can just barely enter the blood in the vein. What is the gauge pressure of the venous blood? Express your answer in millimeters of mercury. Atmospheric pressure 0.610 m Number i UnitsAt a given instant, the blood pressure in the heart is 1.6x104 Pa. If an artery in the brain is 0.45 m above the heart, what is the pressure in the artery? Ignore any pressure changes due to blood flow.
- At a given instant, the blood pressure in the heart is 1.4 x 104 Pa. If an artery in the brain is 0.37 m above the heart, what is the pressure in the artery? Ignore any pressure changes due to blood flow.In the hydraulic press used in a trash compactor, the radii of the input piston and the output plunger are 7.2 ✕ 10-3 m and 5.1 ✕ 10-2 m, respectively. If the height difference between the input piston and the output plunger can be neglected, what force is applied to the trash when the input force is 359 N. NThe pressure drop along a length of artery is 103 Pa, the radius is 9.5 mm, and the flow is laminar. The average speed of the blood is 16.5 mm/s.Randomized Variables P = 103 Par = 9.5 mms = 16.5 mm/s a. What is the net force on the blood in this section of artery in N? b. What is the power expended maintaining the flow in mW?
- The top of your head is about 30 cm above your heart. What is the blood pressure difference between your heart and the top of your head?Under normal circumstances, the vitreous humor, a jelly-like substance in the main part of the eye, exerts a pressure of up to 24 mmmm of mercury that maintains the shape of the eye. If blockage of the drainage duct for aqueous humor causes this pressure to increase to about 50 mm of mercury, the condition is called glaucoma. What is the increase in the total force (in newtons) on the walls of the eye if the pressure increases from 24 mm to 50 mm of mercury? We can quite accurately model the eye as a sphere 2.2 cm in diameter. Express your answer in newtons.The average body density of a human is 1030 kg/m3, yet we typically float in seawater when we fill our lungs with air and sink when we exhale. Therefore, our effective density is similar to that of seawater, 1010 kg/m3. If the typical total volume (body density + lung capacity) of a human is 0.25 m3, what volume is due to body mass and what volume is due to lung capacity (you can assume the density of air is rair = 1.2 kg/m3)
- At a given instant, the blood pressure in the heart is 1.7 x 104 Pa. If an artery in the brain is 0.46 m above the heart, what is the pressure in the artery? Ignore any pressure changes due to blood flow.Question 8 A medical technician is trying to determine what percentage of a patient's artery is blocked by plaque. To do this, she measures the blood pressure just before the region of blockage and fınds that it is 1.20 × 104 Pa, while in the region of the blockage it is 1.15 x 104 Pa. Furthermore, she knows that blood flowing through the normal artery just before the point of blockage is traveling at 30.0 cm/s, and the specific gravity of this patient blood is 1.06. What percentage of the cross-sectional area of the patient's artery is blocked by the plaque? (NO NEED TO PUT PERCENT SYMBOL).A sphygmomanometer is a device used to measure blood pressure, typically consisting of an inflatable cuff and a manometer used to measure air pressure in the cuff. In a mercury sphygmomanometer, blood pressure is related to the difference in helghts between two columns of mercury. The mercury sphygmomanometer shown in the figure below contains air at the cuff pressure P. Po The difference in mercury heights between the left tube and the right tube is h= 109 mmtg - 0.109 m, a normal systolic reading. What is the gauge systolic blood pressure Poauge in pascals? The density of mercury is p 13.6 x 10 kg/m and the ambient pressure is Po1.01 x 10 Pa. HINT Pa