CBSE Questions for Class 11 Medical Biology Excretory Products And Their Elimination Quiz 12 - MCQExams.com

The amount of $$Na^+$$ excreted in the urine is primarily determined by:
  • The amount of $$Na^+$$ secreted into the proximal convoluted tubule
  • The amount of $$Na^+$$ reabsorbed by the proximal convoluted tubule
  • The amount of ADH released by the posterior pituitary gland
  • Hormonal regulation of $$Na^+$$ reabsorption in the distal convoluted tubule
The human kidney:
  • Concentrates the urine by actively transporting water out of the filtrate.
  • Produces more dilute urine when the collecting ducts become less permeable to water.
  • Responds to anti-diuretic hormone by increasing urine output.
  • Gets rid of urine from the body by secreting it into the descending arm of the loop of Henle.
Which of the following statements is wrong about the human excretory system?
  • Excretory system consists of one pair of bean shaped kidneys, one pair of ureter, a urinary bladder and a urethra
  • Kidneys are situated between the 12th thoracic and 3rd lumber vertebrae close to the dorsal wall in abdominal cavity
  • Right kidney is a little higher level than the left one
  • All
________ produces bile pigments from the haemoglobin of broken red blood cells.
  • Kidney
  • Liver
  • A & B
  • None of the above
Kidneys are made up of number of filters called _______.
  • Nephrons
  • Glomerulus
  • A and B
  • None of the above
Loop of Henle is found in?
  • Green gland
  • Malpighian tubule
  • Neuron
  • Nephron
The network of blood capillaries present in the Bowman's capsule is called?
  • Glomerulus
  • Renal capsule
  • Nephron
  • Ureter
Filtration of blood occur in ________.
  • Proximal tubule
  • Glomerulus
  • Renal artery
  • Renal vein
The knot of blood vessel inside the Bowman's capsule is the?
  • Loop of Henle
  • Glomerulus
  • Renal artery
  • Renal vein
The Bowman's capsule and glomerulus together form the?
  • Malpighian body
  • Urinary body
  • Urinary tubule
  • Ureter
Acidification of urine occurs in _______.
  • Proximal tubule
  • Distal tubule
  • Loop of henle
  • None
The structural and functional unit of kidney is called?
  • Nephron
  • Nephridia
  • Ureter
  • Urethra
Which of the following are absent in both serum and glomerular filtrate?
I. Ions
II. RBC
III. Fibrinogen
IV. Albumin.
  • I and II
  • II and III
  • III and IV
  • None of the above
Ultrafiltration occurs in a glomerulus when?
  • Hydrostatic pressure exceeds osmotic pressure
  • Osmotic pressure exceeds hydrostatic pressure
  • Capsular hydrostatic pressure exceeds glomerular hydrostatic pressure
  • Colloidal osmotic pressure plus capsular pressure remain less than blood hydrostatic pressure
If we remove the pressure receptors from the urinary bladder wall?
  • Micturition will continue.
  • Their will be no micturition.
  • Urine will collect in the bladder.
  • There will be no collection of urine in bladder.
Which of the following combinations is not matched correctly?
Column IColumn II
a. Bilirubin and biliverdin(i) Bile juice
b. Hydrolysis of glycogen(ii) Amylases
c. Digestion of fat(iii) Bile salts
d. Salivary gland(iv) Parotid
  • A
  • B
  • C
  • D
Which of the following is not a part of the structure of uriniferous tubule?
  • Collecting duct
  • Loop of Henle
  • Convoluted tubule
  • Bowman's capsule
In which organ the kidneys stores water?
  • Kidney
  • Intestine
  • Urinary bladder
  • Cardiac Stomach
What will be the glomerular filtration pressure(GFP) if glomerular hydrostatic pressure(GHP) is $$60$$mm Hg, blood colloidal osmotic pressure, (BCOP) is $$30$$mm Hg and capsular hydrostatic pressure (CHP) is $$20$$mm HP?
  • $$50$$mm Hg
  • $$30$$mm Hg
  • $$70$$mm Hg
  • $$10$$mm Hg
Vasa recta
  • Lie parallel to the loop of Henle
  • Forms U-shaped structure
  • Is absent or highly reduced in cortical nephrons
  • Is related to more than one of the options mentioned above
Choose the correct answer from the our options given.
The smallest functional unit of kidney is?
  • Glomerulus
  • Collecting tubule
  • Bowman's capsule
  • Nephron
Effective filtration in glomerulus is caused due to?
  • Powerful pumping action of the heart
  • Secretion of adrenaline
  • Afferent arteriole is slightly wider than efferent arteriole
  • Vacuum develops in proximal convoluted tubule and sucks the blood
Glomerulus is present in which of the following? 
  • Bowman's capsule
  • Renal tubules
  • Loop of Henle
  • None of these
An advantage of excreting nitrogenous wastes in the form of uric acid is that?
  • Uric acid can be excreted in almost solid form
  • The formation of uric acid requires a great deal of energy
  • Uric acid is the first metabolic breakdown products of acids
  • Uric acid may be excreted through the lungs
What will happen if one kidney is removed from the body of a human being?
  • Death due to poisoning
  • Uremia and death
  • Stoppage of urination
  • Nothing, the person will survive and remain normal kidney will become hypertrophied
Which of the following option has the correct pair of nephron parts that maintain pH and ionic balance of blood?
  • PCT and Henle's loop
  • DCT and collecting duct
  • PCT and glomerulus
  • Collecting duct and Henle's loop
Nephridia are the excretory organ of ___________.
  • Protozoans
  • Coelenterates
  • Flatworms
  • Annelids
The functional and filtering units of kidney are nephrons.
  • True
  • False
Which of the following layers is not continuous?
  • Proximal convoluted tubule
  • Distal convoluted tubule
  • Parietal layer of Bowman's capsule
  • Visceral layer of Bowman's capsule
The filtrate in the renal tubules comes in contact with blood in the?
  • Afferent arteriole
  • Efferent arteriole
  • Glomerulus
  • Peritubular capillaries
The enzyme converting Angiotensin-I to Angiotensin-II is secreted by?
  • Kidneys
  • GI tract
  • Lungs
  • Heart
Which of the following are absent in both serum and glomerular filtrate?
I. Ions
II. RBC
III. Fibrinogen
IV.Albumin
  • I and II
  • II and III
  • III and IV
  • II, III and IV
Glomerulus absorb minerals
  • True
  • False
Mark the correct option that show highest to lowest $$\%$$ resorption of substances from nephron
  • Water $$>$$ Sodium $$>$$ Urea
  • Glucose $$>$$ Water $$>$$ Urea
  • Water $$>$$ Urea $$>$$ Glucose
  • Urea $$>$$ Glucose $$>$$ Sodium
Which of the following are about $$90\%$$ absorbed in the nephron?
  • Glucose and amino acids - Active process
  • Glucose and amino acids - Passive process
  • $$Cl^-$$,  $$NH_3$$,  $$K^+$$ - Passive process
  • $$Cl^-$$, $$NH_3$$, $$K^+$$ - Active process
The given diagram represents a signal nephron from a mammalian kidney. Identify which of the numbered regions is
(i)The site of ultrafiltration
(ii) Particularly sensitive to ADH
(iii) The main site for the reabsorption of glucose and amino acid
(iv) Largely responsible for the adjustment of blood pH
1548784_35299c8b9bda421ba1f78438fa68bd10.png
  • I-A, II-B, III-D, IV-E
  • I-A,II-B,III-C, IV-E
  • I-A, II-B,III-C,IV-D
  • I-A, II-E, III-C, IV-D
Each human kidney has nearly
  • $$10,000$$ nephrons
  • $$50,000$$ nephrons
  • $$1,00,000$$ nephrons
  • $$1$$ million nephrons
Maintenance of favorable internal body environment suitable for functioning of body organs is called _______
  • adjustment
  • variation
  • homoestasis
  • consciousness
In principle, longest Henle's loop should be found in the nephrons of desert dwelling mammal feeding mainly on?
  • Succulent cactus
  • Fleshy fruits
  • Leathery leaves
  • Seeds
Name the smooth muscle of urinary bladder.
  • Cardiac muscle
  • Detrusor muscle
  • Dartos muscle
  • Gubernaculum
Ureotelic excretion is found in-
  • Amoeba and frog
  • Aves and Snakes
  • Fishes and Snakes
  • Human and frog
Filtration of the blood takes place at ________.
  • PCT
  • DCT
  • Collecting ducts
  • Malpighian body
 Excretory waste is filtered from blood in which of the following parts? 
  • Glomerulus
  • Efferent arteriole
  • Afferent arteriole
  • Loop of Henle
The following substances are the excretory products in animals. Choose the least toxic form among them?
  • Urea
  • Uric acid
  • Ammonia
  • Carbon dioxide
In a function, a man started nauseating and he fainted suddenly. The entire day he drank 2 Litres of water every hour. What could be the reason behind this?
  • Weakness
  • Dehydration
  • Overhydration
  • Need to be tested
Due to insufficient filtration in the Bowman's capsule , all are likely to happen except
  • Accumulation of fluid in the body
  • Increase is blood pressure
  • Increase in blood urea level
  • Loss of glucose through urine
Proximal convoluted tubule (PCT) is lined with
  • Cuboidal epithelium
  • Simple brush border epithelium
  • Simple cuboidal brush border epithelium
  • Simple ciliated brush border epithelium
  • Columnar epithelium
What will be the EFP, if BCOP is - 30, CHP is - 20 and GHP is +70?
  • +20 mm Hg
  • +30 mm Hg
  • +60 mm Hg
  • +120 mm Hg
The principal nitrogenous excretory compound in humans is synthesized
  • In the liver, but eliminated mostly through kidneys.
  • In kidneys, but eliminated mostly through liver.
  • In kidneys as well as eliminated by kidneys.
  • In liver and also eliminated by the same through bile.
Artificial kidney was invented in the year
  • 1932
  • 1945
  • 1951
  • 1955
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