Flow Down Gradient Pre-learning

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According to Fick's law, the rate of diffusion depends on which of the following factors?

The charge of the substance

The size of the substance

The temperature of the membrane

The solubility of the substance in the membrane (correct)

Which of the following is true about cells specialized for transporting large amounts of solute?

They have larger surface area to volume ratio

They have smaller surface area to volume ratio

They have fewer transporters

They have more transporters (correct)

What is the rate of flow of charges across a membrane known as?

Potential energy

Voltage

Current (correct)

Resistance

According to Ohm's law, what happens to the current when the resistance increases?

The current decreases Signup and view all the answers

In which situation does Ohm's law predict a lower resistance?

Many channels and lower voltage Signup and view all the answers

What is responsible for establishing voltage in a charged particle?

The electric field of the particle Signup and view all the answers

Which parameter in Poiseuille's law determines the rate of flow of a fluid through a tube?

Radius of the tube Signup and view all the answers

According to Poiseuille's law, what happens to the flow if the length of the tube increases?

The flow decreases Signup and view all the answers

Which of the following is true about viscous fluids?

Viscous fluids are more syrupy Signup and view all the answers

Which parameter in Poiseuille's law is directly related to the force that a substance exerts on the walls of its container?

Hydrostatic pressure Signup and view all the answers

Which of the following is affected by the difference in hydrostatic pressure between two points in a tube or vessel?

Rate of flow Signup and view all the answers

In the respiratory tract and the cardiovascular system, flow of gas or blood to tissues is clinically relevant in terms of which unit?

mL/min Signup and view all the answers

According to Fick's law, which of the following factors affects the flow/flux of substances through capillaries and cell membranes?

All of the above Signup and view all the answers

What is the simplified equation that describes flow in Poiseuille's law?

Flow = \DeltaP/R Signup and view all the answers

Which of the following is NOT a caveat of Poiseuille's law?

Radius of the tube is the most important determinant of resistance Signup and view all the answers

What does Fick's law quantify?

Flow Signup and view all the answers

What are the factors that affect the flow/flux according to Fick's law?

All of the above Signup and view all the answers

How does flow change when the concentration gradient decreases according to Fick's law?

Flow decreases Signup and view all the answers

Which equation represents Poiseuille's law for fluid flow?

$F = \frac{8 \pi \eta L},{r^2}$ Signup and view all the answers

Which equation represents Fick's law for diffusion?

$J = -D \frac{dc},{dx}$ Signup and view all the answers

Which equation represents Ohm's law for bioelectricity?

$I = \frac{V},{R}$ Signup and view all the answers

Which statement accurately describes flow down gradients?

Flow is measured by the size of the energy gradient between two points. Signup and view all the answers

What factors resist the flow down gradients in a system?

Energy gradient and resistance Signup and view all the answers

What is the driving force for the flow of a substance down a gradient?

Energy gradient Signup and view all the answers

Which of the following clinical findings is most likely due to vascular changes in Mary's case of diabetes mellitus?

15 seconds capillary refill time on the right great toe Signup and view all the answers

Which of the following clinical findings is less likely to be due to vascular changes in Mary's case of diabetes mellitus?

Inability to distinguish between sharp and dull stimuli over the right foot Signup and view all the answers

What is the most likely cause of Robert's foot swelling based on his medical history?

NYHA stage II heart failure Signup and view all the answers

What is the most likely cause of Robert's shortness of breath based on his medical history?

NYHA stage II heart failure Signup and view all the answers

How does Robert's foot swelling relate to the physicochemical laws discussed in the pre-learning and during the lecture?

It is a result of fluid backup in the venous system Signup and view all the answers

How does Robert's shortness of breath relate to the physicochemical laws discussed in the pre-learning and during the lecture?

It is a result of impaired cardiac output Signup and view all the answers

According to Fick's law, which of the following factors affects the flow/flux of substances through capillaries and cell membranes?

The permeability of the membrane to the charged particle Signup and view all the answers

Which equation represents Ohm's law for bioelectricity?

$V = I \times R$ Signup and view all the answers

What is the driving force for the flow of a substance down a gradient?

Concentration gradient Signup and view all the answers

Which parameter in Poiseuille's law determines the rate of flow of a fluid through a tube?

Radius of the tube Signup and view all the answers

Which of the following clinical findings is most likely due to vascular changes in Mary's case of diabetes mellitus?

Numbness and coldness in her feet Signup and view all the answers

According to Fick's law, the rate of diffusion depends on which of the following factors?

Surface area and thickness of the membrane Signup and view all the answers

According to Poiseuille's law, which of the following is the most important determinant of resistance in a tube?

Tube radius Signup and view all the answers

Which of the following is a caveat of Poiseuille's law?

Resistance changes with turbulent flow Signup and view all the answers

Which equation represents Fick's law for diffusion?

$F = k \cdot A(C_A - C_B) / t$ Signup and view all the answers

According to Fick's law, which of the following factors affects the flow/flux of substances through capillaries and cell membranes?

All of the above Signup and view all the answers

What is the driving force for the flow of a substance down a gradient?

Concentration difference Signup and view all the answers

Which of the following is NOT a factor that affects the flow/flux according to Fick's law?

Temperature Signup and view all the answers

Which of the following clinical findings is most likely due to vascular changes in Mary's case of diabetes mellitus?

15 seconds capillary refill time on the right great toe Signup and view all the answers

Which aspect(s) of Robert's medical history best explain his foot swelling?

NYHA stage II heart failure Signup and view all the answers

What is the driving force for the flow of a substance down a gradient?

Concentration difference Signup and view all the answers

How does Robert's shortness of breath relate to the physicochemical laws discussed in the pre-learning and during the lecture?

It is a result of impaired cardiac output Signup and view all the answers

Which parameter in Poiseuille's law determines the rate of flow of a fluid through a tube?

Radius of the tube Signup and view all the answers

According to Ohm's law, what happens to the current when the resistance increases?

Current decreases Signup and view all the answers

Which of the following equations represents Ohm's law?

$I = rac{V}{R}$ Signup and view all the answers

What is the driving force for the flow of a substance down a gradient?

Energy gradient Signup and view all the answers

Which equation represents Fick's law for diffusion?

$J = -Drac{dC}{dx}$ Signup and view all the answers

What factors resist the flow down gradients in a system?

Conductance and resistance Signup and view all the answers

Which parameter in Poiseuille's law determines the rate of flow of a fluid through a tube?

Radius of the tube Signup and view all the answers

How does flow change when the concentration gradient decreases according to Fick's law?

Flow decreases Signup and view all the answers

According to Poiseuille's law, which of the following factors affects the rate of flow of a fluid through a tube?

Radius of the tube Signup and view all the answers

What happens to the rate of flow if the length of the tube increases according to Poiseuille's law?

The rate of flow decreases Signup and view all the answers

Flow Down Gradient Pre-learning

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Questions and Answers

According to Fick's law, the rate of diffusion depends on which of the following factors?

Which of the following is true about cells specialized for transporting large amounts of solute?

What is the rate of flow of charges across a membrane known as?

According to Ohm's law, what happens to the current when the resistance increases?

In which situation does Ohm's law predict a lower resistance?

What is responsible for establishing voltage in a charged particle?

Which parameter in Poiseuille's law determines the rate of flow of a fluid through a tube?

According to Poiseuille's law, what happens to the flow if the length of the tube increases?

Which of the following is true about viscous fluids?

Which parameter in Poiseuille's law is directly related to the force that a substance exerts on the walls of its container?

Which of the following is affected by the difference in hydrostatic pressure between two points in a tube or vessel?

In the respiratory tract and the cardiovascular system, flow of gas or blood to tissues is clinically relevant in terms of which unit?

According to Fick's law, which of the following factors affects the flow/flux of substances through capillaries and cell membranes?

What is the simplified equation that describes flow in Poiseuille's law?

Which of the following is NOT a caveat of Poiseuille's law?

What does Fick's law quantify?

What are the factors that affect the flow/flux according to Fick's law?

How does flow change when the concentration gradient decreases according to Fick's law?

Which equation represents Poiseuille's law for fluid flow?

Which equation represents Fick's law for diffusion?

Which equation represents Ohm's law for bioelectricity?

Which statement accurately describes flow down gradients?

What factors resist the flow down gradients in a system?

What is the driving force for the flow of a substance down a gradient?

Which of the following clinical findings is most likely due to vascular changes in Mary's case of diabetes mellitus?

Which of the following clinical findings is less likely to be due to vascular changes in Mary's case of diabetes mellitus?

What is the most likely cause of Robert's foot swelling based on his medical history?

What is the most likely cause of Robert's shortness of breath based on his medical history?

How does Robert's foot swelling relate to the physicochemical laws discussed in the pre-learning and during the lecture?

How does Robert's shortness of breath relate to the physicochemical laws discussed in the pre-learning and during the lecture?

According to Fick's law, which of the following factors affects the flow/flux of substances through capillaries and cell membranes?

Which equation represents Ohm's law for bioelectricity?

What is the driving force for the flow of a substance down a gradient?

Which parameter in Poiseuille's law determines the rate of flow of a fluid through a tube?

Which of the following clinical findings is most likely due to vascular changes in Mary's case of diabetes mellitus?

According to Fick's law, the rate of diffusion depends on which of the following factors?

According to Poiseuille's law, which of the following is the most important determinant of resistance in a tube?

Which of the following is a caveat of Poiseuille's law?

Which equation represents Fick's law for diffusion?

According to Fick's law, which of the following factors affects the flow/flux of substances through capillaries and cell membranes?

What is the driving force for the flow of a substance down a gradient?

Which of the following is NOT a factor that affects the flow/flux according to Fick's law?

Which of the following clinical findings is most likely due to vascular changes in Mary's case of diabetes mellitus?

Which aspect(s) of Robert's medical history best explain his foot swelling?

What is the driving force for the flow of a substance down a gradient?

How does Robert's shortness of breath relate to the physicochemical laws discussed in the pre-learning and during the lecture?

Which parameter in Poiseuille's law determines the rate of flow of a fluid through a tube?

According to Ohm's law, what happens to the current when the resistance increases?

Which of the following equations represents Ohm's law?

What is the driving force for the flow of a substance down a gradient?

Which equation represents Fick's law for diffusion?

What factors resist the flow down gradients in a system?

Which parameter in Poiseuille's law determines the rate of flow of a fluid through a tube?

How does flow change when the concentration gradient decreases according to Fick's law?

According to Poiseuille's law, which of the following factors affects the rate of flow of a fluid through a tube?

What happens to the rate of flow if the length of the tube increases according to Poiseuille's law?

According to Fick's law, which of the following factors affects the flow/flux of substances through capillaries and cell membranes?

What is the driving force for the flow of a substance down a gradient?

What is the simplified equation that describes flow in Poiseuille's law?

Which of the following is true about viscous fluids?

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