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WorksheetsExcretory Products and their Elimination - Quiz 4
Total questions: 10
Worksheet time: 4mins
If Loop of Henle were absent from mammalian nephrons, which of the following is to be expected?
The urine will be more dilute
There will be no urine formation
The urine will be more concentrated
There will be hardly any change in quality and quantity of urine formed
I. Reabsorption in this region is minimum.
II. This region plays a significant role in the maintenance of high osmolarity of intestinal fluid
III. Its descending limb is permeable to water but almost impermeable to electrolytes
IV. Its ascending limb is impermeable to water but allows transport of electrolyte actively or passively
V. In descending limb filtrate is hypertonic while in ascending limb filtrate is hypotonic
The above characteristics are associated with –
PCT
Loop of Henle
DCT
Bowman’s capsule
Tubular secretion helps to maintain a proper acid-base balance by removing one of the following from blood –
H+ and NH3
Uric acid
H+ and urea
NH3 and creatinine
Which one of the following is produced in the kidneys?
Rennin
Renin
Uricase
Arginase
Reabsorption of Na+ is controlled by –
Vasopressin or ADH
Aldosterone
Renin
Rennin
Which of the following processes of osmoregulation by the kidney is the least selective?
salt pumping to control osmolarity
H+ pumping to control pH
reabsorption
filtration
Processing of filtrate in the proximal and distal tubules accomplishes what important function?
sorting plasma proteins according to size
converting toxic ammonia to less toxic urea
maintaining a constant pH in body fluids
regulating the speed of blood flow through the nephron
What is the typical osmolarity of human blood?
30 mosm/L
100 mosm/L
200 mosm/L
300 mosm/L
Which of the following statements about the urinary system is INCORRECT?
It produces renin, which helps regulate blood pressure.
It metabolizes vitamin D to its active form.
It carries out the majority of gluconeogenesis in the body.
It produces erythropoietin, which stimulates red blood cell formation.
If the pH of the blood decreases, the pH of the urine will
Decrease.
Increase
Be unaffected
first increase than decrease
