The highest concentration of urea is found in
renal vein
hepatic portal vein
dorsal aorta
hepatic vein
Correct Answer :
D. hepatic vein
Related Questions
The conversion of ammonia into urea occur in
kidneys
lungs
liver
intestine
A person consuming a large amount of fish and meat will excrete urine rich in
ammonia
urea
uric acid
creatinine
Liquid part of blood having undergone ultrafiltration from the glomerulus and reaching the Bowman's capsule normally would not contain
glucose
sodium chloride
creatinine
albumin
The renal threshold for glucose in blood of man is
80 mg/100 ml
150 mg/100 ml
200 mg/100 ml
300mg/100 ml
Urea is formed from ammonia and carbon dioxide in
liver cells
every living cell
kidney and muscles
liver and kidney
The loop of Henle is poorly developed or absent in............as it is concerned with reabsorption of water.
desert mouse
carnivorous bird
fish
snake
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
Malpighian bodies are found in
kidney of vertebrates and is involved in ultrafiltration
kidney of vertebrates and is involved in passive filtration
kidney of vertebrates and is involved in selective reabsorption
insects and involved in excretion
The total volume of blood passing through the kidneys in one minute is about
125 ml
500 ml
1200 ml
250 ml
Water absorption in the loop of Henle and distal part of tubule is controlled by
antidiuretic hormone
aldosterone
renin
both (a) and (b)
Birds and reptiles excrete their nitrogenous waste in the form of
uric acid and urea
urea
urea and uric acid respectively
uric acid
The highest concentration of urea is found in
renal vein
hepatic portal vein
dorsal aorta
hepatic vein
The normal renal blood flow amounts to
125 litres per day
500 litres per day
1000 litres per day
1700 litres per day
Which of these are uricotelic ?
Monkey
Lizard
Fish
Frog
In rabbit, the urinary bladder opens into
uterus
urethra
vestibule
ureter
A condition in which urine contains blood is termed as
creatinine
anuria
haematuria
ketonuria
The least toxic nitrogenous waste is
ammonia
uric acid
urea
both (a) and (c)
In which animal, the excretory substance is ammonia?
Camel
Cartilaginous fish
Whale
Fresh water fish
The final concentration of the fluid to produce a markedly hypertonic urine takes place in the
loop of Henle
distal convoluted tubule
collecting tubule
both (a) and (b)
Separation of amino acid into amino and carboxyl group is known as
deamination
excretion
animation
egestkxi
The hormone which converts angioten-sinogen to angiotensin is
angio tensinase
renin
rennin
none of these
Ammonia is the chief nitrogenous excretory material in
reptiles
turtles
tadpoles
amphibians
The liquid which collects in the cavity of Bowman's capsule is
concentrated urine
blood plasma minus blood proteins
a solution containing excretory wastes
a solution containing wastes
In ancestral verterbrates the kidney is known as
glomerular type
aglomerular type
holonephric type
metanephric type
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
Urea is transported by
WBC
RBC
Blood
Plasma
Vitamin excreted in urine by higher vertebrates is
A
B
K
C
In man, the kidneys are
pronephric
mesonephrk:
metanephric
all types
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
Kidneys' function is to
remove metabolic wastes from the body
maintain a constant fluid environment
maintain pH of body fluids
all of these