Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
Enroll
1.2k
Download
Site Scenario (Continued) (in Hindi)
4,039 plays

More

Pranav Pundarik is teaching live on Unacademy Plus

Pranav Pundarik
I teach exactly what you need🎯 Cleared NEET, AIIMS, JIPMER and JEE. Explore the courses, enjoy, understand and excel in Biology❤️

U
Unacademy user
and in q no 67 , (work )I also marked a ! No where balance is mentioned, n throughout in passage work is essential is being articulated! Jus last line is giving emphasis upon little room for leisure! But not balance, plus it's clearly mentioned that we cannot escape this tyranny ( means if we don't work we will perish of famine ) so work is essential !  please resolve thing
Vinay katreddi
2 years ago
yes broo...no where it's mentioned regarding balancing work and leisure...and central theme is only about how work is importan..so it can never balance btwn work n leisure
Ram Manu Dixit
2 years ago
I agree
Praveen Kumar
2 years ago
I too thought so
Sangram Jadhav
2 years ago
Agree...the very first sentence is "the very first lesson" that should be taught is not working is unnatural...leisure is passing reference in last sentence..."how much leisure we can afford". Option A hona chahiye.
Sir.. IgG can pass placenta.. Ye samajh nhi ayaaaa
sir apki madad chahiye ...apka email id dijiye questions send karunga physics ka
I've one question: how often do you upload the lessons in the course? And thank you for this lesson as well. I love when you give random analogies like the paneer ki sabzi and chocolate coating. Ese topic se alag examples yad reh jate hai and you tell it like a story too! Thank you so much
Pranav Pundarik
10 months ago
Actually, very often. This course will be completed in a day or two !
Pranav Pundarik
10 months ago
And ekdum maje karo, you will find some really deep analogies 😅😅
Pranav Pundarik
10 months ago
Checkout my many other courses as well, be it Human Physiology or Plant Physiology
My Free Soul
10 months ago
Apki consistency is phenomenal! Sure, in fact I'm hoping apne sare chapters and topics k courses cover kie, from neuro to cockraoch, and let's not forget endocrine. I find endocrine so intriguing yet so confusing. Hope you could help!
sir koi bhi lecture ke baad aap previous year topic related questions deya kro that will be more than enough
sir IgD ya phr IgE hoga... ncrt me IgE mention h
  1. THE HUMAN IMMUNE SYSTEM


  2. THE SITE SCENARIO IN BONE MARROW LYMPHO-CYTO-PRECURSORS (STEM CELLS) T CELLS (T=Thymus) B CELLS ( B=Bone Marrow) *Memory Cells *Memory cells *Plasma Cells *Killer Cells CELL MEDIATED *Suppressor Cells *Helper T cells IMMUNITY IMMUNITY **Form Antibodies ANTI BODY MED.


  3. All these T and B cells are formed in Bone Marrow. The difference is this that the T cells migrate to Thymus and their further development takes there.


  4. CELL MEDIATED IMMUNE SYSCTEM 1. HELPER T CELLS (Th): and B cells to divide. * Stimulate killer T cells * Produce Lympho-kines (to attract phagocytes) . 2. KILLER T CELLS (Tk): * Destroyers * Secrete Lympho-toxins and Lympho-kines 3. Suppressor T Cells (Ts): *Suppress functions of Tc and Th cells and also plasma cells * To protect action against own body. . 4. Memory T cells *To retain memory of encounters.


  5. AMIS ANTI BODY MEDIATED IMMUNE SYSTEM vunabte portion Basic Unit: Immuno Globulin (g) Components Contain two heavy chains bond igne chian Contain two light chains Bonded via Disulphide bridges ora Also known as Humoral Immunity. Image Credits NCERT Textbook In accordance with https://epathshala.nic.in/license/


  6. WORKING OF lo 1. AGGLUTINITION : Antibody attach to the surface of pathogen. 2. OPSONISATION : Coating of bacterium with opsonin (IgG and lgM) to facilitate phagocytosis. 3. NEUTRALISATION : Neutralize the toxin of bacterium.


  7. Types of IMMUNO GLOBULINS A. IGA : *10% *Protects mucus membrane & from inhaled pathogens. *In colostrum, saliva, sweat, tears etc. IGD : *1-3% *Development of immune responses. *Activates B-lymphocytes IGM : *5-10% *OLDEST, LARGEST AND HEAVIEST *Pentameric Structure. *First antibody generated in response to antigens *Strong Agglutinition


  8. IGG : *75-80% *Most Abundant CAN PASS PLACENTA *PROVIDES IMMUNE POWER TO EMBRYO *Lightest.


  9. ATTACK ON AN INVADER (PATHOGEN) VASODILATION Dilation of blood vessels ADHESION : Leucocytes adhere to the surface A. DIAPEDESIS : Leucocytes move into Extra Cellular Fluid(ECF) CHEMOTAXIS : Movement towards bacteria in ECF PHAGOCYTOSIS i. Adherence : Attachment of infective agent to membrane of phagocyte. ii. Ingestion (Engulfing of pathogen) iii. Intracellular killing of pathogen (via hydrolytes) NON PHAGOCYTIC RESPONSE: Make pores on pathogen, then water enters in pathogen, hence cell bursts and dies.


  10. post-caillaryvenule endothelial cells increased blood low increased adhesion endothelial permeability diapedesis chemotactic factors Image Credits NCERT Textbook In accordance with https://epathshala.nic.in/license/