Midtterm 4 - Past Q Flashcards
Which of the following statement is NOT true for the function of the kidney?
A. Its a organ of homeothermia
B. It maintains acid/base balance
C. It contributes to homeostacis
D. Conserves water, electrolytes, glucose and amino acids.
A. Its a organ of homeothermia
What is true for the cortical nephron?
A. Its decending segments approach the papilla
B. Its tubular system is located in the cortex
C. Its special region is the juxtaglomerular apparatus
D. Its tubular system is located in the inner medulla
B. Its tubular system is located in the cortex
Which of the following statements is NOT true for the juxtamedullary nephron?
A. Its special region is the juxtaglomerular apparatus
B. Its tubular system is located in the inner medulla
C. Its tubular system is located in the cortex
D. Its decending segments approach the papilla
C. Its tubular system is located in the cortex
Which of the following histological formations is NOT a part of the juxtaglomerular apparatus? A. Juxtaglomerular cells B. Macula Densa Cells C. Mesangial Cells D. Cells of proximal tubule
D. Cells of proximal tubule
What is true about the blood supply of the kidney?
A. The glomerular capillary continiues in venules
B. The vas afferent is not a part of the nephron
C. The vas efference continiues in the peritubular venous capillary system
D. It displays a double cappilarization
D. It displays a double cappilarization
What is characteristic of the system of vasa recta?
A. It surrounds the collecting tubules
B. They run alongside the deep reaching loop of Henle
C. They run perpendicularly to the proximal tubule
D. Their primary functions is the nutrient supply to the glomerulus
B. They run alongside the deep reaching loop of Henle
What is sympathetic innervation of the kidney?
A. It is poor
B. It increased sympathic simulation and causes the GFR to increase
C. Most sympathetic fibers get to the afferent arteriole
D. At rest considerable sympathetic discharge can be detected
C. Most sympathetic fibers get to the afferent arteriole
What is true about the parasymphatetic innervation of the kidney?
A. They mostly get to the afferent arteriole
B. They detect the firmness of the renal capsule
C. The kidney is very rich on parasympathetic nerves
D. It acts through cholinergic meditation
D. It acts through cholinergic meditation
What is the role of the pain sensing fibers in the renal capsule?
A. They sense the firmness of the renal capsule
B. They react to increased renal blood flow
C. Its importance is negligible
D. If its activated they indirectly increase the GFR
A. They sense the firmness of the renal capsule
What does the renal auto regulation ensure?
A. A constant 80 mmHg pressure in the renal arteries
B. That the mean arterial pressure can be followed with ought delay in its vas afferent
C. It ensures constant blood pressure values mainly via the sympathetic nervous system
D. It maintains the pressure needed for filtration by reacting to a higher pressure with constriction and to a lower pressure with dialation.
D. It maintains the pressure needed for filtration by reacting to a higher pressure with constriction and to a lower pressure with dialation.
What is the blood pressure in the renal arterioles? A. 70-250 mmHg B. It changes against the mid pressure C. 50 mmHg D. 120 mmHg
C. 50 mmHg
Where are the vasoregulative factors contributing to the renal auto regulation?
A. Its in the adrenal gland
B. In the juxtaglomerular cells
C. In mesangial cells
D. Probably in the macula densa
D. Probably in the macula densa
Which of the following statements is not true for the PGE synthesized in the kidney?
A. It has a effect only on the afferent arteriole
B. It increases the RBF
C. It has a vasodilator effect
D. It has no effect on the GFR
A. It has a effect only on the afferent arteriole
What is the role of the kallikrein-kirin system in the renal auto regulation?
A. The kinins induce strong vasodilatation
B. Braydykinin induces local vasodialation
C. It gets activated with falling arterial mid pressure
D. One of its components, the PGE, compensates the effect of the angiotensin-II
B. Braydykinin induces local vasodialation
What method can be used to examine the renal osmotic gradient? A. Clearance test B. Isotope measures C. Micopuncture D. Ultrasound
C. Micopuncture
What method can be used to follow the renal function in an intact organism? A. No methods are available B. Micropuncture C. Ultrasund D. Isotope techniques
D. Isotope techniques
What method can be used to examine the kidneys anatomical parts in an intact organism? A. Ultrasound B. Clearance test C. Mictopuncture D. Isotope techniques
A. Ultrasound
Wich method can be used to examine the renal blood flow?
A. Collecting urine
B. Clearance test
C. Ultrasound
D. Only a direct surgical operation is possible
B. Clearance test
What is the reason of 100 times larger filtration coefesient in the renal glomerulus compared to any other parts of the microcirculation?
A. There is a higher Effective filtration pressure
B. The portal circulation of the kidney
C. The special permeability of the basal membrane
D. The increase of colloid osmotic pressure because of the protein retention
C. The special permeability of the basal membrane
Which of the following factors does NOT influence the rate of ultrafiltration in the renal
A. Effective flitration pressure
B. The size of the filtration area
C. The quality of the barrier
D. The value of the arterial mid pressure
D. The value of the arterial mid pressure
Which formula describes the renal effective filtration pressure?
A. EFP=Glomerular pressure - (capsular pressure+ Glomerular colloid osmotic pressure)
B. EFP= (glomerular pressure+capsular pressure)-glomerular solloid osmotic pressure
C. EFP= (glomerular pressure-glomerular colloid osmotic pressure) + capsular pressure
D. EFP= Glomerular pressure-Glomerular colloid osmotic pressure
A.
EFP=Glomerular pressure - (capsular pressure+ Glomerular colloid osmotic pressure)
What describes the glomerular colloid osmotic pressure within the glomerulus?
A. Towards the vas efferent the pressure falls from 36mmHg to 28mmHg
B. Towars the vas efferent the pressure rises from 28 mmHg to 36 mmHg
C. At the beginning of the vas afferent the pressure is 36mmHg
D. Its a constant value, 36mmHg
B. Towars the vas efferent the pressure rises from 28 mmHg to 36 mmHg
What is the value of the effective filtration pressure in the vas efferent?
A. It is lower than the pressure in the vas Afferent but its never equal to 0.
B. 12mmHg
C. 4 mmHg
D. 36 mmHg
C. 4 mmHg
How much is the total ultrafiltration pr day? A. 60litre/ 100 kg bwt B. 28-36 litre/ 100kg bwt C. 100-120 litre/ 100kg bwt D. 180-200 litre/ 100kg bwt
D. 180-200 litre/ 100kg bwt
Which factor is the most important driving force in the tubular reabsorption?
A. Intravasal oncotic pressure
B. Hydrostatic pressure
C. Arterial midpressure
D. Pulse pressure in the adrenals
A. Intravasal oncotic pressure
How are most materials transported during tubular reabsorption?
A. Paracellulary
B. Para- and Transcellulary
C. Transcellulary
D. By phynocytiosis
B. Para- and Transcellulary
What percentage of the filtration is reabsorbed in the tubular system? A. 30% B. 99,9% C. More than 90% D. 65%
C. More than 90%
What is characteristic about the tubular secretion?
A. It is exclusively a primary active transport
B. It is a passive process
C. Substances get into the peritubular capillary from the tubular lumen
D. Substances get into the tubular lumen from the peri tubular capillary
D. Substances get into the tubular lumen from the peritubular capillary
What is the average volume of urin pr minuit in animals? A. 2-3 ml/min/100kg bwt B. 0,1 litre day/ kg bwt C. 10-15 ml/min/100 kg bwt D. 0,2-0,4 ml/min/ 100kg bwt
A. 2-3 ml/min/100kg bwt
What is true for extraction?
A. Substances get into the tubular lumen from the peritubular capillaries
B. Renal ability of removing substances from the plasma
C. Its value is 0, if the kidney totally extracts the given substance
D. The process goes only against the concentration gradient?
B. Renal ability of removing substances from the plasma