The hormone which converts angioten-sinogen to angiotensin is
angio tensinase
renin
rennin
none of these
Correct Answer :
B. renin
Related Questions
Of the 180 litres of glomerular filtrate produced each day the amount of reab-sorption is
96 per cent
80 per cent
95 per cent
99 per cent
In the kidneys of rabbit, the loops of Henle are found in
medulla
cortex
pelvic
pyramid
The vessel carrying blood into the Bowman's capsule in kidney of frog is known as
aferent arteriole
efferent arteriole
renal portal vein
any of these
Water absorption in the loop of Henle and distal part of tubule is controlled by
antidiuretic hormone
aldosterone
renin
both (a) and (b)
The normal glomerular filtration rate in man is
125 ml/minute
250 ml/minute
500 ml /minute
1200 ml/minute
Ammonia is the chief nitrogenous excretory material in
reptiles
turtles
tadpoles
amphibians
In which part of the excretory system of a mammal can you first use the term urine for the fluid it contains?
Bowman's capsule
Loop of Henle
Collecting tubule
Urinary bladder
In the kidneys, the pressure gradient or the effective filtration pressure (E.F.P.) is determined by
glomerullar hydrostatic pressure
capsular hydrostatic pressure
blood colloidal osmotic pressure
all of these
The plasma passing through the glomerulus loses about
50% of its volume as filtrate
20% of its volume as filtrate
80% of its volume as filtrate
40% of its volume as filtrate
Diuresis is the condition in which
the excretion of volume of urine increases
the excretion of volume of urine decreases
the kidneys fail to excrete urine
the water balance of blood is disturbed
The least toxic nitrogenous waste is
ammonia
uric acid
urea
both (a) and (c)
Urea is formed from ammonia and carbon dioxide in
liver cells
every living cell
kidney and muscles
liver and kidney
Kidneys' function is to
remove metabolic wastes from the body
maintain a constant fluid environment
maintain pH of body fluids
all of these
When urine is allowed to stand, it gives strong ammoniacal odour, due to
conversion of urea to ammonia via ornithinearginine cycle
conversion of urea to ammonia by bacteria
conversion of urea and uric acid to ammonia
none of these
The total volume of blood passing through the kidneys in one minute is about
125 ml
500 ml
1200 ml
250 ml
Birds and reptiles excrete their nitrogenous waste in the form of
uric acid and urea
urea
urea and uric acid respectively
uric acid
In mammalian kidney, the pyramids are seen in
cortex
pelvis
medulla
hilus
The filtrate from glomerulus contains
blood without blood cells and proteins
plasma without sugar
blood with proteins but without cells
blood without urea
In normal adult humans, glomerular filtration rate (G.F.R) is on an average
100 litres/day
120 litres/day
150 litres/day
180 litres/day
Columns of Bertini in the kidneys of mammals are formed as extension of
medulla into pelvis
medulla into cortex
cortex into medulla
pelvis into ureter
The hormone which converts angioten-sinogen to angiotensin is
angio tensinase
renin
rennin
none of these
The loop of Henle is poorly developed or absent in............as it is concerned with reabsorption of water.
desert mouse
carnivorous bird
fish
snake
Liquid which collects in the cavity of Bowman's capsule is
concentrated urine
plasma minus blood proteins
glycogen and water
sulphates and water
A person consuming a large amount of fish and meat will excrete urine rich in
ammonia
urea
uric acid
creatinine
Under normal conditions which one is completely reabsorbed in the renal tubule?
Urea
Uric acid
Salts
Glucose
Which of these are uricotelic ?
Monkey
Lizard
Fish
Frog
The plasma resembles in its composition with the filtrate produced in the glomerulus except for the presence of
chlorides
amino acids
glucose
none of these
In kidney, glucose is mainly absorbed by
Bowman's capsule
Loop of Henle
Proximal convoluted tubule
Distal convoluted tubule
Separation of amino acid into amino and carboxyl group is known as
deamination
excretion
animation
egestkxi
The conversion of ammonia into urea occur in
kidneys
lungs
liver
intestine