Back to Course

SS3: BIOLOGY - 1ST TERM

0% Complete
0/0 Steps
  1. Regulation of Internal Environment I | Week 1
    6 Topics
    |
    1 Quiz
  2. Regulation of Internal Environment II | Week 2
    4 Topics
    |
    1 Quiz
  3. Regulation of Internal Environment III | Week 2 (Contd)
    3 Topics
    |
    1 Quiz
  4. Nervous Coordination I | Week 3
    2 Topics
    |
    1 Quiz
  5. Nervous Coordination II | Week 4
    4 Topics
    |
    1 Quiz
  6. Sense Organs I | Week 5
    6 Topics
    |
    1 Quiz
  7. Sense Organs II | Week 6
    3 Topics
    |
    1 Quiz
  8. Ecology of Population | Week 7
    3 Topics
    |
    1 Quiz
  9. Balance in Nature | Week 8
    3 Topics
    |
    1 Quiz
  10. Reproductive Systems and Reproduction in Man I | Week 9
    4 Topics
    |
    1 Quiz
  11. Reproductive Systems and Reproduction in Man II | Week 10
    3 Topics
    |
    1 Quiz
  12. Development of New Seeds | Week 11
    4 Topics
    |
    1 Quiz
  13. Fruits | Week 12
    3 Topics
    |
    1 Quiz



Lesson Progress
0% Complete

Topic Content:

  • Definition of Nephron
  • Ultrafiltration
  • Selective Reabsorption

A nephron or the kidney tubule, as discussed in our SS2 2nd Term Course, is the functional unit of the kidney, responsible for filtering blood and forming urine.

There are about one million nephrons in each kidney, each of which performs essential tasks to maintain the body’s homeostasis, including regulating blood volume and pressure, electrolyte balance, and waste excretion.

nephron

The kidneys perform the function of excretion in two phases:

(i) Ultrafiltration
(ii) Selective reabsorption

1. Ultrafiltration:

Blood containing excretory substances flows into the glomerulus from the renal artery. Blood flows at high pressure in these capillaries owing to the resistance of the blood capillaries to blood flow.

 

You are viewing an excerpt of this Topic. Subscribe Now to get Full Access to ALL this Subject's Topics and Quizzes for this Term!

Click on the button "Subscribe Now" below for Full Access!

Subscribe Now

Note: If you have Already Subscribed and you are seeing this message, it means you are logged out. Please Log In using the Login Button Below to Carry on Studying!

avatar

Responses

Your email address will not be published. Required fields are marked *

Powered By MemberPress WooCommerce Plus Integration