1) Explain why changing blood viscosity would or would not be a reasonable method for the...
1) Explain why changing blood viscosity would or would not be a reasonable method for the body to control blood flow.
2) Explain why changing blood vessel length would or would not be a reasonable method for the body to control blood flow.
3) Describe what happens to pressure and flow during exercise and explain why they change in that way.
Homework Answers
- Viscosity of the blood is the property due to which any fluid tends to resist changes in the formation. Due to viscosity of the blood, there is presence of peripheral resistance. Blood is a non-Newtonian fluid and the flow depends on the pressure in a direct proportion considering constants. An increase in viscosity directly increase the resistance, this increase in resistance leads to a decrease in blood flow. The body tends to increase the blood pressure in the vessels to maintain the flow. Simply, higher the viscosity, thicker is the blood and lower the rat E of blood flow.
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1) Explain why changing blood viscosity would or would not be a
reasonable method for the...
Consider a 4-mm diameter blood vessel and two 2-mm diameter blood vessels. Assuming pressure, viscosity, and...
Consider a 4-mm diameter blood vessel and two 2-mm diameter blood vessels. Assuming pressure, viscosity, and vessel length are constant, would the two 2-mm vessels have more, less, or the same amount of fluid flow as the 4-mm diameter blood vessel? Explain using the proper equation, showing your work and using proper units.
Removing the plasma component of the blood would increase its viscosity. Describe how this increase in blood viscosity w...
Removing the plasma component of the blood would increase its viscosity. Describe how this increase in blood viscosity would affect the blood flow rate of the giraffe and hence the arterial pressure. What consequence would this have on the giraffe’s cardiovascular system? No more than 150 words. [2 marks].
If the __________ doubled, how would blood flow change and by how much? a. radius b....
If the __________ doubled, how would blood flow change and by how much? a. radius b. blood viscosity c. vessel length d. pressure
A blood vessel carries blood with a viscosity equal to 0.0035 Pa.s. If the vessel has...
A blood vessel carries blood with a viscosity equal to 0.0035 Pa.s. If the vessel has a radius equal to 1 mm and a length equal to 5 mm, what is its resistance in PRU? solve in PRU (b) The vessel from part (a) is connected in series to a second vessel with a resistance equal to 0.250 PRU. What is the total resistance of the two vessels? solve in PRU (c) If the pressure across the two vessels is...
1. Describe the relationship between pressure, volume, resistance and flow. How is this similar to blood...
1. Describe the relationship between pressure, volume, resistance and flow. How is this similar to blood flow through the heart and vessels? 2. What is intrapulmonary pressure? If it is higher than atmospheric pressure, what happens? What happens if it is lower than atmospheric pressure? Which gas law would you apply to explain this? State the law. 3. What is intrapleural pressure? Why is it important? 4. What would happen if intrapleural pressure became higher than intrapulmonary pressure? What might...
answer this question BLOOD AND FLUID QUESTION 1 (0A patient's blood pressure taken at the arm...
answer this question
BLOOD AND FLUID QUESTION 1 (0A patient's blood pressure taken at the arm is 120 mmHg systolic and 70 mmHg diastolic. What would you expect the blood pressure (systolic and diastolic pressures) to be at the top of the head given that this point is 40 cm above the measurement point? Remember blood pressure is a gauge pressure and that 1 kPa = 7.5 mmHg. (The density of blood is about 1060 kg/m.) Choose one: a. 89...
Each student must pick two of the questions below. Answers should be 5-7 sentences or 2...
Each student must pick two of the questions below. Answers should be 5-7 sentences or 2 paragraphs 1. Name or describe a condition that might increase the viscosity of blood and how this would affect blood pressure, blood flow and resistance. 2. List 2 conditions that would cause and increase in total vessel length increase and how this would affect blood pressure, lood flow and resistance ______________ 3. Distinguish between continuous capillaries, sinusoid capillaries and fenestrated capillaries. Where is each...
The viscosity of blood is 2.10 × 10−3 Pa⋅s. * What is the pressure difference required...
The viscosity of blood is 2.10 × 10−3 Pa⋅s. * What is the pressure difference required to make blood flow through an artery of inner radius 2.00 mm and length 0.200 m at an average speed of 5.28 cm/s? ___ Pa * Blood flows through an artery of inner radius 2.00 mm and length 0.200 m at an average speed of 5.28 cm/s. What is the ratio of the pressure difference required to make blood flow through this artery to...
Please explain why answer A is wrong, and explain which one is the correct answer and why. Question: Blood flows through...
Please explain why answer A is wrong, and explain which one is the correct answer and why. Question: Blood flows through an artery with a partial blockage, which narrows the diameter of the blood vessel for a small segment of the total length. How does the pressure in the narrow portion of the blood vessel compare to the pressure just before the partial blockage? Assume that frictional effects have a negligible impact on the situation. a. The pressure is higher...
The blood pressure at your heart is approximately 100 mm of Hg. As blood is pumped...
The blood pressure at your heart is approximately 100 mm of Hg. As blood is pumped from the left ventricle of your heart, it flows through the aorta, a single large blood vessel with a diameter of about 2.5 cm. The speed of blood flow in the aorta is about 60 cm/s. Any change in pressure as blood flows in the aorta is due to the change in height: the vessel is large enough that viscous drag is not a...
1. Describe the relationship between pressure, volume, resistance and flow. How is this similar to blood flow through the heart and vessels? 2. What is intrapulmonary pressure? If it is higher than atmospheric pressure, what happens? What happens if it is lower than atmospheric pressure? Which gas law would you apply to explain this? State the law. 3. What is intrapleural pressure? Why is it important? 4. What would happen if intrapleural pressure became higher than intrapulmonary pressure? What might...
answer this question
BLOOD AND FLUID QUESTION 1 (0A patient's blood pressure taken at the arm is 120 mmHg systolic and 70 mmHg diastolic. What would you expect the blood pressure (systolic and diastolic pressures) to be at the top of the head given that this point is 40 cm above the measurement point? Remember blood pressure is a gauge pressure and that 1 kPa = 7.5 mmHg. (The density of blood is about 1060 kg/m.) Choose one: a. 89...
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