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Questions and Answers
If the pressure at the beginning of a vessel is 100 mmHg and the pressure at the end is 80 mmHg, in which direction will the blood flow?
If the pressure at the beginning of a vessel is 100 mmHg and the pressure at the end is 80 mmHg, in which direction will the blood flow?
- From the beginning to the end of the vessel (correct)
- The direction of flow cannot be determined from the given information
- From the end to the beginning of the vessel
- The blood will not flow because the pressure gradient is zero
What is the primary factor determining the flow rate of blood through a vessel?
What is the primary factor determining the flow rate of blood through a vessel?
- The pressure gradient between the two ends of the vessel (correct)
- The absolute pressure within the vessel
- The diameter of the vessel
- The viscosity of the blood
Which of the following statements about vascular resistance is true?
Which of the following statements about vascular resistance is true?
- Vascular resistance is directly proportional to the flow rate of blood
- Vascular resistance is a measure of the opposition to blood flow through the vessel (correct)
- Vascular resistance is independent of the friction between the blood and the vessel walls
- Vascular resistance is higher in larger vessels compared to smaller vessels
According to Ohm's law, if the pressure gradient across a vessel increases and the resistance remains constant, what will happen to the flow rate of blood?
According to Ohm's law, if the pressure gradient across a vessel increases and the resistance remains constant, what will happen to the flow rate of blood?
Which of the following factors does NOT contribute to vascular resistance?
Which of the following factors does NOT contribute to vascular resistance?
What is the primary factor that determines the resistance to blood flow in a vessel?
What is the primary factor that determines the resistance to blood flow in a vessel?
Which statement about laminar and turbulent blood flow is correct?
Which statement about laminar and turbulent blood flow is correct?
What is the correct order of the components of the vascular tree, starting from the heart?
What is the correct order of the components of the vascular tree, starting from the heart?
Which layer of the vessel wall is responsible for providing structural integrity and elasticity?
Which layer of the vessel wall is responsible for providing structural integrity and elasticity?
What is the primary function of the capillaries in the vascular system?
What is the primary function of the capillaries in the vascular system?
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