Podcast
Questions and Answers
Which process involves the movement of substances between blood and interstitial fluid?
Which process involves the movement of substances between blood and interstitial fluid?
- Diffusing through the intercellular clefts
- Membrane vesicular fusion
- Diffusing through the endothelial cells fenestrations
- Direct diffusion (correct)
What is the mission of the entire cardiovascular system?
What is the mission of the entire cardiovascular system?
- To facilitate capillary transport (correct)
- To keep blood flowing through arteries
- To regulate blood pressure
- To allow diffusion in the lungs
According to Fick’s first law, where does diffusion flux occur?
According to Fick’s first law, where does diffusion flux occur?
- In the presence of membrane vesicular fusion
- Independent of concentration gradient
- From a region of high concentration to a region of low concentration (correct)
- From a region of low concentration to a region of high concentration
What percentage of the blood in systemic capillaries is involved in continuous exchange with interstitial fluid?
What percentage of the blood in systemic capillaries is involved in continuous exchange with interstitial fluid?
Which method allows substances in blood or interstitial fluid to cross the walls of a capillary using pinocytosis and exocytosis?
Which method allows substances in blood or interstitial fluid to cross the walls of a capillary using pinocytosis and exocytosis?
What is the formula for diffusion flux (J)?
What is the formula for diffusion flux (J)?
What property determines the diffusion coefficient (D) of a molecule?
What property determines the diffusion coefficient (D) of a molecule?
Which process accounts for fluid transport across biological membranes?
Which process accounts for fluid transport across biological membranes?
What is the osmotic pressure?
What is the osmotic pressure?
How does the addition of solute to pure solvent affect the activity of water in the solution?
How does the addition of solute to pure solvent affect the activity of water in the solution?
What is the primary mission of the cardiovascular system in relation to capillary exchange?
What is the primary mission of the cardiovascular system in relation to capillary exchange?
Which method allows substances in blood or interstitial fluid to cross the walls of a capillary by diffusing through the endothelial cells fenestrations?
Which method allows substances in blood or interstitial fluid to cross the walls of a capillary by diffusing through the endothelial cells fenestrations?
What does Fick's First Law state about the movement of particles (diffusion flux)?
What does Fick's First Law state about the movement of particles (diffusion flux)?
What is the role of membrane vesicular fusion in capillary exchange?
What is the role of membrane vesicular fusion in capillary exchange?
What is the significance of Fick's Law of Diffusion in capillary exchange?
What is the significance of Fick's Law of Diffusion in capillary exchange?
What is the formula for diffusion flux (J) in terms of diffusion coefficient (D), surface area (A), and concentration gradient (dc/dx)?
What is the formula for diffusion flux (J) in terms of diffusion coefficient (D), surface area (A), and concentration gradient (dc/dx)?
What is the diffusion coefficient (D) of a substance if its diffusion flux (J) is 500 g/s, the concentration gradient (dc/dx) is 20 g/m4, and the surface area (A) is 0.5 m2?
What is the diffusion coefficient (D) of a substance if its diffusion flux (J) is 500 g/s, the concentration gradient (dc/dx) is 20 g/m4, and the surface area (A) is 0.5 m2?
In osmosis, what causes the movement of solvent molecules across a semipermeable membrane?
In osmosis, what causes the movement of solvent molecules across a semipermeable membrane?
What is the minimum pressure needed to be applied to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane?
What is the minimum pressure needed to be applied to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane?
Which process accounts for fluid transport out of the kidney tubules and the gastrointestinal tract, into capillaries, and across cell membranes?
Which process accounts for fluid transport out of the kidney tubules and the gastrointestinal tract, into capillaries, and across cell membranes?
