Select the correct statement:

1. Atrial Natriuretic Factor increases the blood pressure.
2. Angiotensin II is a powerful vasodilator.
3. Counter current pattern of blood flow is not observed in vasa recta.
4. Reduction in Glomerular Filtration Rate activates JG cells to release renin. 

Subtopic:  Autoregulation of GFR |
 79%
From NCERT
NEET - 2020
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A fall in glomerular filtration rate (GFR) activates:
1.  Adrenal cortex to release aldosterone
2.  Adrenal medulla to release adrenaline
3.  Posterior pituitary to release vasopressin
4.  Juxta glomerular cells, to release renin

Subtopic:  Autoregulation of GFR |
 83%
From NCERT
AIPMT - 2012
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Which one of the following options gives the correct categorization of six animals according to the type of nitrogenous wastes (A, B, C) they give out?

A
AMMONOTELIC
B
UREOTELIC
C
URICOTELIC
1. Frog, Lizards Aquatic Amphibia, Humans Cockroach, Pigeon
2. Aquatic Amphibia Frog, humans Pigeon, Lizards, Cockroach
3. Aquatic Amphibia Cockroach, Humans Frog, Pigeon, Lizards
4. Pigeon, Humans Aquatic Amphibia, Lizards Cockroach, Frog
Subtopic:  Nitrogenous Excretory Products |
 80%
From NCERT
AIPMT - 2012
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Which one of the following characteristics is common in both humans and adult frogs?
1.  Internal fertilization
2.  Nucleated RBCs
3.  Ureotelic mode of excretion
4.  Four-chambered heart

Subtopic:  Nitrogenous Excretory Products |
 89%
From NCERT
AIPMT - 2012
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The increase in osmolarity from outer to inner medullary interstitium is maintained due to:

i. Close proximity between Henle's loop and vasa recta
ii. Counter current mechanism
iii. Selective secretion of HCO3¯ and hydrogen ions in PCT
iv. Higher blood pressure in glomerular capillaries


1. Only (ii)

2. (iii) and (iv)

3. (i), (ii), and (iii)

4. (i) and (ii)

Subtopic:  Concentration of Urine: I |
 61%
From NCERT
NEET - 2020
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Uricotelism is found in:

1. Fishes and freshwater protozoans

2. Birds, reptiles, and insects

3. Frogs and toads

4. Mammals and birds 

Subtopic:  Nitrogenous Excretory Products |
 93%
From NCERT
AIPMT - 2004
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Concentration of urine depends upon which organ:

1. Bowman's capsule

2. Length of Henle's loop

3. P.C.T.

4. Network of capillaries arising from glomerulus

Subtopic:  Concentration of Urine: I |
 80%
From NCERT
AIPMT - 2000
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Which pair is correct:

1. Sweat = temperature regulation

2. Saliva = sense of food taste

3. Sebum = sexual attraction

4. Humerus = Hind leg

Subtopic:  Role of other Organs in Excretion |
 82%
From NCERT
AIPMT - 2000
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If Henle's loop was absent from mammalian nephron, which of the following is to be expected:
 

1. There will be no urine formation
2. There will be hardly any change in the quality and quantity of urine formed
3. The urine will be more concentrated
4. The urine will be more diluted
Subtopic:  Concentration of Urine: I |
 75%
From NCERT
AIPMT - 2003
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Which of the following would help in prevention of diuresis?

1. Reabsorption of Na+ and water from renal tubules due to aldosterone
2. Atrial natriuretic factor causes vasoconstriction
3. Decrease in the secretion of renin by JG cells
4. More water reabsorption due to under secretion of ADH

Subtopic:  Autoregulation of GFR |
 57%
From NCERT
NEET - 2020
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