What type of filtrate will stimulate the macula densa cells to increase the diameter of the...
What type of filtrate will stimulate the macula densa cells to increase the diameter of the afferent arteriole? What type of filtrate would require an increase in filtration rate?
Homework Answers
Macula densa is a part of juxtaglomerular apparatus that lie in the distal convoluted tubule of nephron. The sodium ion and chloride ion will stimulate the macula densa cell to increase the diameter of afferent arteriole. This is because it monitor the Nacl concentration in renal tubules. The two factors that are responsible for increased in filtration rate are increased blood pressure and volume. Also, increase in the afferent aertiole increases the filtration rate
Figure: this figure is showing macula densa
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What type of filtrate will stimulate the macula densa cells to
increase the diameter of the...
Which of these statements about renal autoregulation using tubuloglomerular feedback is CORRECT? Increased blood pressure stimulates...
Which of these statements about renal autoregulation using tubuloglomerular feedback is CORRECT? Increased blood pressure stimulates juxtaglomerular cells to release their hormone, cortisol, which stimulate DCT to reabsorb salt. Increased glomerular filtration rate stimulates macula densa cells to release their chemical signals that constrict afferent arterioles. Decreased flow of filtrate stimulates juxtaglomerular cells to release their hormone, angiotensin II, which is a vasodilator. Increased blood pressure stimulates atrial myocardial cells to release their hormone, atrial natriuretic peptide, which decreases glomerular...
41. How would an increase in blood CO2 levels effect respiratory rate? a. It would cause...
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What is the effect of reducing afferent arteriole radius on filtration rate? What is the effect...
What is the effect of reducing afferent arteriole radius on filtration rate? What is the effect of reducing efferent arteriole radius on filtration rate? Explain the physiology behind these effects.
6) The vasa recta are associated with which structures in the kidney? (2pts) Afferent arterioles Glomeruli...
6) The vasa recta are associated with which structures in the kidney? (2pts) Afferent arterioles Glomeruli Cortical nephrons juxtamedullary nephrons 7) What type of response by the afferent arterioles would you expect if blood pressure increased? (2pts) The afferent arterioles would stimulate renin release. The afferent arterioles would not respond to blood pressure changes. The afferent arterioles would constrict. The afferent arterioles would dilate. 8) Extrinsic controls regulate glomerular filtration rate as a means of regulating pts) systemic blood pressure...
Which of the following is NOT true regarding sickle-cell disease? Select one: a. It is due...
Which of the following is NOT true regarding sickle-cell disease? Select one: a. It is due to a mutation resulting in a hydrophilic amino acid. b. It is a cause of anemia. c. It is due to a hereditary hemoglobin defect. d. It is caused by a recessive allele that modifies the structure of hemoglobin. O e. It is advantageous in that it can protect carriers against malaria. Which of the following would not lead to polycythemia? Select one: a....
secreting rond epithelial cu capsule arenal corp A. Complex of modified cells in the afferent arteriole...
secreting rond epithelial cu capsule arenal corp A. Complex of modified cells in the afferent arteriole and the ascending limb/distal tubule in the kidney: helps regulate blood pressure by secreting renin: consists of the macula densa and juxtaglomerular cells B. Double-layered epithelial cup that surrounds the glomerulus in a nephron: also called Bowman capsule C. Functional unit of the kidney consisting of a renal corpuscle and a ren tubule D. Tubular portion of the nephron that carries the filtrate away...
54. The filtration membrane consists of capillary endothelium, porous basement membrane, and the (which contain filtration...
54. The filtration membrane consists of capillary endothelium, porous basement membrane, and the (which contain filtration slits). This filtration membrane permits (large or small) molecules to be filtered. 55. Proximal tubule: The simple cuboidal cells of the proximal tubule are called brush border cells because they contain numerous The microvilli increase the for reabsorption. The proximal tubule cells are highly permeable to water and many solutes. The permit the movement of water between the cells. 56. Loop of Henle: The...
4. A suspension of yeast cells is to be filtered at a constant filtration rate of...
4. A suspension of yeast cells is to be filtered at a constant filtration rate of 50 L/min. The suspension has a solid content of 70 kg/m3 of suspension and the yeast cells have a bulk density of 800 kg/m3. Laboratory tests indicate that the specific cake resistance is 40 m/kg and the viscosity of the filtrate is 2.9x10-3 kg/m.s. The filter has an area of 0.1 m2 and the medium offers negligible resistance. How long can the filtration rate...
Aa- 24 .... Аавьсс Аавьса! Аавьсер Аавьсер Аавсе Body Text Heading TList Pai No Spac. 1...
Aa- 24 .... Аавьсс Аавьса! Аавьсер Аавьсер Аавсе Body Text Heading TList Pai No Spac. 1 Norma Aay. A Paragraph 19 Styles 4. The nephron loep (ep of Henle), the next segment that filtrate enters, and the only part of the renal tubule to dip into the renal medulla, consists of a descending and an ascending limb. The Town of benle sometimes known as the thin descending limb because it is made of simple squamous epithelial cells, travels toward the...
1. Mature B cells require particular receptors to be engaged by ligand to stimulate these cells...
1. Mature B cells require particular receptors to be engaged by ligand to stimulate these cells to become antibody-secreting cells. Fill-in the table below with the receptor(s) on naïve B cells that transmit each signal and the corresponding ligand(s) that engage that receptor. (6 pts) Receptor(s) on B cell Ligand(s) Location in body where receptor engagement occurs Signal 1 Signal 2 b. Briefly describe what happens to mature B cells that receive Signal 1, but not Signal 2? (2 pts)...
41. How would an increase in blood CO2 levels effect respiratory rate? a. It would cause an increase in respiratory rate b. It would cause a decrease in respiratory rate 42. If arterial blood contain 98% oxyhemoglobin saturation and venous blood contains 60% oxyhemoglobin saturation, what can you conclude? a. There is increased loading of oxygen at the lung b. There is increased unloading at the tissues c. The person is resting 43. Which of the following causes water reabsorption...
6) The vasa recta are associated with which structures in the kidney? (2pts) Afferent arterioles Glomeruli Cortical nephrons juxtamedullary nephrons 7) What type of response by the afferent arterioles would you expect if blood pressure increased? (2pts) The afferent arterioles would stimulate renin release. The afferent arterioles would not respond to blood pressure changes. The afferent arterioles would constrict. The afferent arterioles would dilate. 8) Extrinsic controls regulate glomerular filtration rate as a means of regulating pts) systemic blood pressure...
Which of the following is NOT true regarding sickle-cell disease? Select one: a. It is due to a mutation resulting in a hydrophilic amino acid. b. It is a cause of anemia. c. It is due to a hereditary hemoglobin defect. d. It is caused by a recessive allele that modifies the structure of hemoglobin. O e. It is advantageous in that it can protect carriers against malaria. Which of the following would not lead to polycythemia? Select one: a....
secreting rond epithelial cu capsule arenal corp A. Complex of modified cells in the afferent arteriole and the ascending limb/distal tubule in the kidney: helps regulate blood pressure by secreting renin: consists of the macula densa and juxtaglomerular cells B. Double-layered epithelial cup that surrounds the glomerulus in a nephron: also called Bowman capsule C. Functional unit of the kidney consisting of a renal corpuscle and a ren tubule D. Tubular portion of the nephron that carries the filtrate away...
54. The filtration membrane consists of capillary endothelium, porous basement membrane, and the (which contain filtration slits). This filtration membrane permits (large or small) molecules to be filtered. 55. Proximal tubule: The simple cuboidal cells of the proximal tubule are called brush border cells because they contain numerous The microvilli increase the for reabsorption. The proximal tubule cells are highly permeable to water and many solutes. The permit the movement of water between the cells. 56. Loop of Henle: The...
4. A suspension of yeast cells is to be filtered at a constant filtration rate of 50 L/min. The suspension has a solid content of 70 kg/m3 of suspension and the yeast cells have a bulk density of 800 kg/m3. Laboratory tests indicate that the specific cake resistance is 40 m/kg and the viscosity of the filtrate is 2.9x10-3 kg/m.s. The filter has an area of 0.1 m2 and the medium offers negligible resistance. How long can the filtration rate...
Aa- 24 .... Аавьсс Аавьса! Аавьсер Аавьсер Аавсе Body Text Heading TList Pai No Spac. 1 Norma Aay. A Paragraph 19 Styles 4. The nephron loep (ep of Henle), the next segment that filtrate enters, and the only part of the renal tubule to dip into the renal medulla, consists of a descending and an ascending limb. The Town of benle sometimes known as the thin descending limb because it is made of simple squamous epithelial cells, travels toward the...
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