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Standard XII
Biology
Parts of the Excretory System
Identify the ...
Question

Identify the parts labelled as a, b, c, d and e of renal corpuscle represent.

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A
a. Afferent arteriole, b. Efferent arteriole, c. Glomerulus, d. Bowman's capsule, e. Proximal convoluted tubule
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B
a. Efferent arteriole, b. Afferent arteriole, c. Glomerulus, d. Bowman's capsule, e. Proximal convoluted tubule
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C
a. Afferent arteriole, b. Efferent arteriole, c. Glomerulus, d. Bowman's capsule, e. Distal convoluted tubule
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D
a. Afferent arteriole, b. Efferent arteriole, c. Bowman's capsule, d. Glomerulus, e. Proximal convoluted tubule
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E
a. Afferent arteriole, b. Efferent arteriole, c. Bowman's capsule, d. Glomerulus, e. Collecting tubule
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Solution

The correct option is A a. Afferent arteriole, b. Efferent arteriole, c. Glomerulus, d. Bowman's capsule, e. Proximal convoluted tubule
  • (a) Afferent arteriole, blood enters into the Bowman's capsule.
  • (b) Efferent arteriole, blood leaves the Bowman's capsule after ultrafiltration
  • (c) Glomerulus, the network of sieve-like capillaries where ultrafiltration takes place.
  • (d) Bowman's capsule collects the glomerular filtrate.
  • (e) Proximal convoluted tubule, the filtrate passes through this system, and water and salts are reabsorbed.
So, the correct answer is option A.

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Q. The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1 to 8 are as follows:
1. Afferent arteriole from renal artery;
2. Efferent arteriole
3. Bowman's capsule,
4. Glomerulus;
5. Proximal convoluted tubule with blood capillaries;
6. Distal convoluted tubule with blood capillaries;
7. Collecting tubule;
8. U-shaped loop of Henle.
Study the diagram and answer the questions that follow:
When is most water reabsorbed?

843907_97364fb6573a43f28a089271ce0b907d.png
Q. Pick the odd ones in each of the following groups and select the correct option.
(i) Renal pelvis, Medullary pyramid, Renal cortex, Renal papilla
(ii) Afferent arteriole, Henle's loop, Vasa recta, Efferent arteriole
(iii) Glomerular filtration, Antidiuretic hormone, Hypertonic urine, Collecting duct
(iv) Proximal convoluted tubule, Distal convoluted tubule, Henle's loop, Renal corpuscle
Q. Arrange the following in logical sequence.
Renal vein, Renal artery, Afferent arteriole, Efferent arteriole, Glomerulus (pathway of blood through glomerulus).
Q.

The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.

Parts indicated by the guidelines 1 to 8 are as follows :

1. Afferent arteriole from the renal artery;

2. Efferent arteriole

3. Bowman's capsule,

4. Glomerulus ;

5. Proximal convoluted tubule with blood capillaries;

6. Distal convoluted tubule with blood capillaries;

7. Collecting tubule;

8. U-shaped loop of Henle.

Study the diagram and answer the questions that follow;

(a) Where does ultrafiltration take place?

(b) Which structure contains the lowest concentration of urea?

(c) Which structure contains the highest concentration of urea?

(d) Which structure (normally) contains the lowest concentration of glucose?

(e) Where is most water reabsorbed?

Q. Given below are two sets (a and b) of five terms each.
Rewrite the terms in their correct order so as to be in logical sequence.
(a) Afferent arteriole, renal vein, capillary network, glomerulus, efferent arteriole.
(b) Renal artery, urethra, ureter, kidney, urinary bladder.
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