Renal BB Quiz + Lecture Qu.s Flashcards

1
Q

What is the basic unit of Kidney

Loop of Henley

Glomerulus

Bowman’s capsule

Nephron

A

Nephron

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2
Q

How much fluid must be taken tn daily in order to maintain adequate kidney function?

5000 ml

1500ml

50ml

none

A

1500

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3
Q

Renal vascular system follows:

renal artery—smaller arteries—afferent arteriole—capillaries of glomerulus—efferent arteriole—peritubular capillaries….?

Back to renal artery

Arterioles

Venules

Venules follwed by renal veins

A

Venules followed by renal veins

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4
Q

Which part of the brain has major influence on MICTURITION.

Mid brain

Hypothalamus

Peripheral nervous system

Pons

A

Pons

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5
Q

Which of the following type of cell is not seen in the glomerular filtration membrane ?

Mesangial cells

Podocyates

Pericytes

Enterocytes

A

Enterocytes

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6
Q

Bicarbonate reabsorption in proximal tubule,

Occurs primarily in later part of the segment.

Increase during volume contraction.

Increase during hyperventilation.

Options 1 and 3 both are correct.

A

1+3

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7
Q

Administration of an Angiotensin Converting Enzyme inhibitor (ACE inhibitor) to the patient with acute aretery stenosis ( narrowing) might lead to acute renal failure by

Inhibiting renal tubule pottasium reabsorption

Increasing renal resistance to blood flow.

Causing plasma protein to be excreted in the urine.

Reducing glomerular filtrate rate

A

Reducing glomerular filtrate rate

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8
Q

On which of the following does aldosterone exert its greatest effect?

Corticle collecting duct.

Glomerulus

Proximal convulated tubule

Thick part of Loop of Henle

A

Cortical collecting duct

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9
Q

Sodium is actively reabsorbed from the renal tubule in which of the following nephron segments?

Proximal tubule

Distal tubule

Thick part of Loop of Henle

All

A

All

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10
Q

All is true about urea EXCEPT

Concentration rises in PCT

Is actively secreted by the renal tubule cells.

Protein diet increases its concentration.

Cause osmotic diuresis

A

It is actively secreted by the renal tubule cells

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11
Q

Which of the following is the correct order
for movement of fluid through the urinary
tract?
◻ (A) Kidney → urethra → bladder → ureter
◻ (B) Kidney → ureter → bladder → urethra

A

B

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12
Q
How much fluid must be taken in daily in
order to maintain adequate kidney
function?
◻ (A) 500mL
◻ (B) 1500mL
◻ (C) 5000mL
A

B

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13
Q
Where does filtration of blood take place
within the nephron?
◻ (A) Vasa recta
◻ (B) Peritubular capillaries
◻ (C) Capillaries of glomerulus
A

C

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14
Q

From the list pick the parts of the nephron that are most important for:

a. Maintaining pH
b. Reabsorption of water
c. action of aldersterone

Bowmans capsule, proximal convoluted tubule, decending loop of henle, ascending loop of henle, distal convoluted tubule, collecting duct

A

a. proximal and distal tubule
b. Proximal tubule, descending loop if henle, collecting duct
c. Distal tubule, collecting duct

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15
Q

State whether the following are true or false:
(a) reabsorption of sodium ions requires
ATP

(b) reabsorption of water requires input of
energy

(c) aldosterone increases the amount of K+
and decreases the amount of Na+ in the
blood

A

a) True
b) False - passive because WATER is moving by osmotic gradient caused by the active transport of Na
c) False - increases reabsorption of Na therefore the concentration would be higher in the blood

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16
Q

Which of the following statements regarding the kidney is NOT correct?

(A) Water and electrolytes are filtered from the blood in the glomerulus
(B) Around 70% of the plasma volume filtered is
reabsorbed in the distal convoluted tubule
(C) Electrolytes are extensively reabsorbed in the ascending limb of the loop of Henle
(D) Acidic compounds are secreted into the proximal convoluted tubule
(E) Aldosterone regulates sodium reabsorption in the
distal convoluted tubule

A

B - 70% of the plasma volume filtered is reabsorbed in the PROXIMAL convoluted tubule

17
Q

State whether the following are true or false:

(a) Vasopressin is released following significant blood loss
(b) Vasopressin unblocks water channels in the
collecting duct
(c) Water can only be reabsorbed from the collecting duct if there is a high concentration of electrolytes in the renal medulla
(d) Micturition occurs when the parasympathetic nerves in the bladder are inhibited

A

a) true
b) False - stimulates insertion of aquaporin 2s
c) True - water travels by passive diffusion ONLY - no gradient = no diffusion
d) False- you can’t pee when running from a tiger…