Toggle navigation
Email or Username
Password
Remember
Login
Register
|
I forgot my password
Topic Wise Biology MCQs
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Categories
Ask a Question
How the counter current mechanism takes place?
Home
Human Physiology
Excretory Products and their Elimination (Urinary System)
How the counter current mechanism takes place?
asked
in
Excretory Products and their Elimination (Urinary System)
by
anonymous
answer
comment
Your comment on this question:
Your name to display (optional):
Email me at this address if a comment is added after mine:
Email me if a comment is added after mine
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please
log in
or
register
.
Add comment
Cancel
Your answer
Your name to display (optional):
Email me at this address if my answer is selected or commented on:
Email me if my answer is selected or commented on
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please
log in
or
register
.
Add answer
Cancel
1
Answer
0
votes
COUNTER CURRENT MECHANISM
The Henle’s loop in the kidney performs the function of osmoregulation. It shows counter current multiplier mechanism.
The filtrate flows in opposite directions, i.e. in the descending (downward) limb and in the ascending (upward) limb.
The descending limb is relatively impermeable to salts but permeable to water.
The ascending limb is impermeable to water but permeable to salts.
As the filtrate enters the ascending limb, Sodium (Na
+
) ions are pumped out into the surrounding tissue fluid by active transport, increasing the concentration of the tissue fluid.
The filtrate in the ascending limb is hypotonic since it loses salts and retains water.
Due to increase in salt concentration in the tissue fluid, water comes out of the descending limb by passive transport, the filtrate in the descending limb becomes hypertonic.
In case of the absence of this mechanism, dehydration of the human body would take place in less than three minutes.
answered
by
Lifeeasy Authors
ask related question
comment
Your comment on this answer:
Your name to display (optional):
Email me at this address if a comment is added after mine:
Email me if a comment is added after mine
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please
log in
or
register
.
Add comment
Cancel
← Prev Question
Next Question →
Related questions
1
answer
Can anyone tell m were the actual chromosome multiplication takes place during mitosis... The ncert book mentions only dna
asked
in
Cell Structure and Function
by
anonymous
1
answer
At what stage of cell cycle DNA synthesis takes place?
asked
in
Cell Cycle and Cell Division
by
Lifeeasy Biology
cell-cycle-and-cell-division
0
answers
How do the kidneys assist in the maintenance of the pH levels of the blood?
asked
in
Excretory Products and their Elimination (Urinary System)
by
Lifeeasy Biology
urinary-system
0
answers
How does the urinary system help maintain fluid pH in the body?
asked
in
Excretory Products and their Elimination (Urinary System)
by
Lifeeasy Biology
urinary-system
2
answers
How much amount of glomerular filtrate is formed in a minute in man?
asked
in
Excretory Products and their Elimination (Urinary System)
by
Dinanath Patil
urinary-system
All categories
Diversity in Living World - Kingdoms
658
Structural Organisation in Animals and Plants
438
Cell Structure and Function
552
Plant Physiology
705
Human Physiology
443
Digestion and Absorption (Digestive System and Nutrition)
32
Breathing and Respiration (Respiratory System)
45
Body Fluids and Circulation (Cardiovascular System, Circulatory system)
103
Excretory Products and their Elimination (Urinary System)
30
Movement and Support in Humans (Locomotion and Movements)
5
Muscular System
15
Skeletal System
41
Neural Control and Coordination (Nervous System)
74
Sensory Receptors and Sensory Perception (Senses)
0
Chemical Coordination and Regulation (Endocrine System)
71
Lymphatic System and Immune System
20
Genetics and Evolution
369
Biology and Human Welfare
249
Biotechnology
247
Health and Disease
156
Ecology and Environment
109
Reproduction
336