Podcast
Questions and Answers
What are the structural and functional units of the kidneys?
What are the structural and functional units of the kidneys?
- Renal tubules
- Nephrons (correct)
- Glomeruli
- Peritubular capillaries
Which structure forms a high-pressure capillary bed in the nephron?
Which structure forms a high-pressure capillary bed in the nephron?
- Proximal convoluted tubule
- Nephron loop (loop of Henle)
- Distal convoluted tubule
- Glomerulus (correct)
What is the main function of the peritubular capillary bed in the nephron?
What is the main function of the peritubular capillary bed in the nephron?
- Oxygenation of blood
- Filtration of blood
- Secretion of waste products
- Reabsorption of water and solutes (correct)
Which of the following is not a component of the filtrate produced by the nephron?
Which of the following is not a component of the filtrate produced by the nephron?
What is the primary mechanism by which water is carried in the nephron to regulate osmotic equilibrium?
What is the primary mechanism by which water is carried in the nephron to regulate osmotic equilibrium?
What are the subdivisions of the renal tubule in a nephron?
What are the subdivisions of the renal tubule in a nephron?
In which part of the renal tubule does water reabsorption become decoupled from solute reabsorption?
In which part of the renal tubule does water reabsorption become decoupled from solute reabsorption?
Where in the kidney does reabsorption of all the glucose, bicarbonate, amino acids, metabolites, and ⅔ of Na+ occur?
Where in the kidney does reabsorption of all the glucose, bicarbonate, amino acids, metabolites, and ⅔ of Na+ occur?
Which part of the nephron is responsible for reabsorbing water from the isotonic filtrate and resulting in an increase in salt concentration?
Which part of the nephron is responsible for reabsorbing water from the isotonic filtrate and resulting in an increase in salt concentration?
In which segment of the ascending limb of the loop of Henle does Na+ move passively down the concentration gradient?
In which segment of the ascending limb of the loop of Henle does Na+ move passively down the concentration gradient?
What is the main means of Na+ entry at the apical surface in the thick ascending limb of the loop of Henle?
What is the main means of Na+ entry at the apical surface in the thick ascending limb of the loop of Henle?
What plays a vital role in the kidneys’ ability to form dilute or concentrated urine?
What plays a vital role in the kidneys’ ability to form dilute or concentrated urine?
Which hormone promotes the reabsorption of water from the collecting tubule and duct?
Which hormone promotes the reabsorption of water from the collecting tubule and duct?
Which part of the nephron reabsorbs nearly all of the uric acid and about half of the urea, but both are later secreted back into the filtrate?
Which part of the nephron reabsorbs nearly all of the uric acid and about half of the urea, but both are later secreted back into the filtrate?
Where in the nephron does water reabsorption become decoupled from solute reabsorption?
Where in the nephron does water reabsorption become decoupled from solute reabsorption?
In which segment of the ascending limb of the loop of Henle does Na+ move passively down the concentration gradient?
In which segment of the ascending limb of the loop of Henle does Na+ move passively down the concentration gradient?
Where does reabsorption of water from the isotonic filtrate result in a 3-fold increase in salt concentration?
Where does reabsorption of water from the isotonic filtrate result in a 3-fold increase in salt concentration?
Which hormone promotes the reabsorption of water from the collecting tubule and duct?
Which hormone promotes the reabsorption of water from the collecting tubule and duct?
What is the primary mechanism by which Na+ enters the cell in the thick ascending limb of the loop of Henle?
What is the primary mechanism by which Na+ enters the cell in the thick ascending limb of the loop of Henle?
In which part of the nephron does fine-tuned reabsorption occur based on the body’s needs?
In which part of the nephron does fine-tuned reabsorption occur based on the body’s needs?
Which part of the nephron is a diluting region and the site of action of loop diuretics?
Which part of the nephron is a diluting region and the site of action of loop diuretics?
Which hormone increases the synthesis of Na+ channels and Na+/K+ ATPase pump in the collecting tubule and duct?
Which hormone increases the synthesis of Na+ channels and Na+/K+ ATPase pump in the collecting tubule and duct?
Where does most filtered water and solutes get reabsorbed by the time it reaches?
Where does most filtered water and solutes get reabsorbed by the time it reaches?
