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  • Ch 19 Chemical Coordination and Integration | Class 11 Biology in Hindi

    Ch 19 Chemical Coordination and Integration | Class 11 Biology in Hindi
    2026/10/17
    Chemical Coordination and Integration, Class 11 Biology NCERT Chapter 19: quick revision in Hindi, about 13 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Endocrine glands vs exocrine glands - Hypothalamus and pituitary hormones - Pineal, thyroid and parathyroid hormones - Thymus and adrenal gland hormones - Pancreas: insulin and glucagon - Testis, ovary, heart, kidney and gut hormones - Mechanism of hormone action and second messengers Timestamps: 0:00 Introduction 0:19 Roadmap 0:50 Endocrine glands and hormones 1:36 Mistake: ductless vs exocrine glands 1:49 Hypothalamus and releasing hormones 2:25 Pituitary gland: anterior and posterior 3:49 Mistake: posterior pituitary hormone source 4:03 Quick quiz 1 4:26 Pineal gland and thyroid hormones 5:37 Parathyroid hormone and calcium regulation 6:05 Mistake: PTH vs TCT on calcium 6:18 Quick quiz 2 6:38 Thymus and T-lymphocytes 7:02 Adrenal medulla and cortex hormones 8:01 Pancreas: insulin and glucagon 8:45 Mistake: insulin vs glucagon roles 9:01 Quick quiz 3 9:20 Testis, ovary, heart, kidney, gut hormones 10:12 How hormones act on target cells 10:59 Mistake: do all hormones enter cells? 11:12 Quick quiz 4 11:36 One-minute recap The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    13 分
  • Ch 18 Neural Control and Coordination | Class 11 Biology in Hindi

    Ch 18 Neural Control and Coordination | Class 11 Biology in Hindi
    2026/10/14
    Neural Control and Coordination, Class 11 Biology NCERT Chapter 18: quick revision in Hindi, about 14 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Neural system as the body's communication network - CNS and PNS, afferent and efferent fibres - Neuron structure and types - Resting potential and action potential - Synapse and neurotransmitters - Forebrain: cerebrum, thalamus, hypothalamus - Midbrain and hindbrain Timestamps: 0:00 Introduction 0:16 Roadmap 0:47 What is a neural system (communication network) 1:31 Mistake: neural system is not just the brain 1:48 Human neural system: CNS and PNS 3:01 Mistake: afferent vs efferent nerve fibres 3:19 Quick quiz 1 3:48 Structure of a neuron 5:14 Mistake: thinking all neurons are the same 5:32 Resting potential of the neuron membrane 6:21 Action potential and repolarisation 7:12 Mistake: nerve impulse is not electron flow 7:28 Quick quiz 2 7:55 Synapse: how neurons communicate 8:54 CNS: the brain's command centre 9:34 Forebrain: cerebrum, thalamus, hypothalamus 10:39 Mistake: thalamus vs hypothalamus 10:59 Midbrain: connecting forebrain and hindbrain 11:31 Hindbrain: pons, cerebellum, medulla 12:21 Mistake: cerebrum vs cerebellum 12:38 Quick quiz 3 13:04 One-minute recap The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    14 分
  • Ch 17 Locomotion and Movement | Class 11 Biology in Hindi

    Ch 17 Locomotion and Movement | Class 11 Biology in Hindi
    2026/10/12
    Locomotion and Movement, Class 11 Biology NCERT Chapter 17: quick revision in Hindi, about 14 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Movement vs locomotion - Types of muscle: skeletal, visceral, cardiac - Actin and myosin, the thin and thick filaments - Sliding filament theory of contraction - Skeletal system and the 206 bones - Types of joints: fibrous, cartilaginous, synovial - Disorders of muscles and bones Timestamps: 0:00 Introduction 0:22 Roadmap 0:52 Movement vs locomotion, and types of cell movement 1:58 Movement and locomotion are not the same thing 2:20 Muscle properties and the three types of muscle 3:37 Striated does not always mean voluntary 3:54 Quick quiz 1 4:15 Actin and myosin, the thin and thick filaments 5:56 Sliding filament theory of muscle contraction 7:32 Filaments slide, they don't shrink in contraction 7:54 Quick quiz 2 8:19 Skeletal system and the 206 bones of the body 9:23 Quick quiz 3 9:53 Types of joints: fibrous, cartilaginous, synovial 10:59 Not every joint is freely movable 11:18 Quick quiz 4 11:35 Disorders of muscles and bones 12:32 Muscular dystrophy is not just muscle cramps 12:51 One-minute recap The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    14 分
  • Ch 16 Excretory Products and Their Elimination | Class 11 Biology in Hindi

    Ch 16 Excretory Products and Their Elimination | Class 11 Biology in Hindi
    2026/10/12
    Excretory Products and Their Elimination, Class 11 Biology NCERT Chapter 16: quick revision in Hindi, about 13 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Ammonia, urea and uric acid as nitrogenous wastes - Ammonotelic, ureotelic and uricotelic animals - Human excretory system and kidney structure - Urine formation: filtration, reabsorption, secretion - Role of PCT, Henle's loop, DCT and collecting duct - Counter current mechanism and medullary gradient - Hormonal regulation: ADH, renin-angiotensin, ANF - Micturition, other excretory organs and disorders Timestamps: 0:00 Introduction 0:24 Roadmap 0:53 Nitrogenous wastes: ammonia, urea and uric acid 2:08 Common mistake: not all animals excrete urea 2:25 Human excretory system and kidney structure 3:13 Quick quiz 1 3:35 Urine formation: filtration, reabsorption, secretion 4:56 Common mistake: filtrate vs urine volume 5:10 Function of each part of the renal tubule 6:24 Common mistake: Henle's loop limbs confused 6:42 Counter current mechanism in the kidney 7:40 Quick quiz 2 8:01 Hormonal regulation of kidney function 9:11 Common mistake: ADH vs aldosterone 9:30 Quick quiz 3 9:53 Micturition and urine characteristics 10:42 Other excretory organs besides kidneys 11:13 Disorders of the excretory system 12:05 One-minute recap Next chapter: Locomotion and Movement The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    13 分
  • Ch 15 Body Fluids and Circulation | Class 11 Biology in Hindi

    Ch 15 Body Fluids and Circulation | Class 11 Biology in Hindi
    2026/10/12
    Body Fluids and Circulation, Class 11 Biology NCERT Chapter 15: quick revision in Hindi, about 13 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Blood plasma and formed elements - ABO and Rh blood grouping - Blood clotting mechanism - Lymph and the lymphatic system - Open and closed circulatory systems - Human heart structure and cardiac cycle - ECG and double circulation - Heart disorders: hypertension, angina, heart failure Timestamps: 0:00 Introduction 0:18 Roadmap 0:45 Blood plasma composition and proteins 1:36 Plasma vs serum: the key difference 1:48 Formed elements: RBCs, WBCs, platelets 3:24 Quick quiz 1 3:51 ABO blood group system 4:36 Quick quiz 2 4:59 Rh blood grouping and erythroblastosis foetalis 5:49 Rh incompatibility and pregnancy 6:02 Blood clotting (coagulation) mechanism 6:30 Lymph and interstitial fluid 7:01 Open vs closed circulatory systems 7:20 Human heart structure and valves 7:52 Cardiac cycle explained 9:04 Heart sounds: lub and dub 9:15 Quick quiz 3 9:39 ECG: P wave, QRS complex, T wave 10:07 Double circulation in humans 10:35 Pulmonary artery vs pulmonary vein 10:51 Heart regulation and cardiovascular disorders 11:39 Heart failure vs heart attack vs cardiac arrest 11:53 One-minute recap Next chapter: Excretory Products and Their Elimination The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    13 分
  • Ch 14 Breathing and Exchange of Gases | Class 11 Biology in Hindi

    Ch 14 Breathing and Exchange of Gases | Class 11 Biology in Hindi
    2026/10/12
    Breathing and Exchange of Gases, Class 11 Biology NCERT Chapter 14: quick revision in Hindi, about 12 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Respiratory organs across different animals - Human respiratory system: nostrils to alveoli - Mechanism of breathing (inspiration and expiration) - Respiratory volumes and capacities - Exchange of gases via partial pressure gradients - Transport of oxygen and carbon dioxide in blood - Regulation of breathing by medulla and pons - Respiratory disorders: asthma, emphysema, occupational disorders Timestamps: 0:00 Introduction 0:24 Roadmap 0:49 Respiratory organs in different animals 1:26 Human respiratory system anatomy 2:29 Mechanism of breathing: inspiration and expiration 3:24 Myth: do lungs inflate themselves? 3:40 Respiratory volumes: TV, IRV, ERV, RV 4:27 Respiratory capacities: IC, EC, FRC, VC, TLC 5:21 Volume vs capacity: common confusion 5:42 Quick quiz 1 6:07 Exchange of gases: diffusion and partial pressure 7:06 Quick quiz 2 7:31 Transport of gases in blood 7:54 Oxygen transport and the dissociation curve 8:45 Carbon dioxide transport and bicarbonate 9:27 Myth: does haemoglobin carry everything? 9:42 Regulation of breathing by the brain 10:07 Myth: does oxygen trigger breathing? 10:20 Quick quiz 3 10:43 Respiratory disorders: asthma and emphysema 11:13 One-minute recap Next chapter: Body Fluids and Circulation The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    12 分
  • Ch 13 Plant Growth and Development | Class 11 Biology in Hindi

    Ch 13 Plant Growth and Development | Class 11 Biology in Hindi
    2026/10/12
    Plant Growth and Development, Class 11 Biology NCERT Chapter 13: quick revision in Hindi, about 11 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Growth: a permanent, irreversible increase in size - Indeterminate growth and meristems in plants - Growth parameters and the three growth phases - Arithmetic vs geometric growth curves - Conditions needed for growth: water, oxygen, nutrients - Differentiation, dedifferentiation and redifferentiation - Discovery of auxins, gibberellins, cytokinins and ABA - Effects of plant growth regulators (PGRs) Timestamps: 0:00 Introduction 0:20 Roadmap 0:52 What is growth and indeterminate growth 1:32 Trap: mistaking swelling for growth 1:57 Measuring growth and its three phases 2:52 Growth rate: arithmetic vs geometric growth 3:44 Quick quiz 1 4:13 Conditions needed for plant growth 4:43 Differentiation, dedifferentiation and development 5:33 Trap: dedifferentiation vs differentiation 5:49 Plant growth regulators and their discovery 6:53 Quick quiz 2 7:21 Effects of plant growth regulators 8:49 Quick quiz 3 9:12 Quick quiz 4 9:43 One-minute recap Next chapter: Breathing and Exchange of Gases The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    11 分
  • Ch 12 Respiration in Plants | Class 11 Biology in Hindi

    Ch 12 Respiration in Plants | Class 11 Biology in Hindi
    2026/10/12
    Respiration in Plants, Class 11 Biology NCERT Chapter 12: quick revision in Hindi, about 13 minutes, with quick quizzes and a one-minute recap. Free NCERT notes, flashcards and practice: https://padhaipaglu.com In this episode: - Gas exchange in plants via stomata and lenticels - Glycolysis and net ATP yield - Fermentation: alcoholic and lactic acid - Aerobic respiration and the Krebs cycle - Electron transport system and oxidative phosphorylation - Respiratory balance sheet (38 ATP) - Amphibolic pathway - Respiratory quotient (RQ) Timestamps: 0:00 Introduction 0:19 Roadmap 0:48 Do plants respire? Gas exchange via stomata and lenticels 1:35 Myth: plants only photosynthesize, not respire 1:54 Glycolysis: splitting glucose into pyruvic acid 2:59 Myth: confusing total ATP with net ATP in glycolysis 3:16 Fermentation: alcoholic and lactic acid pathways 4:16 Quick quiz 1 4:46 Myth: fermentation releases a lot of energy 5:02 Aerobic respiration: complete oxidation in mitochondria 6:04 Krebs cycle (citric acid cycle) explained 6:59 Myth: Krebs cycle itself is the main ATP factory 7:18 Electron transport system and oxidative phosphorylation 8:43 Myth: oxidative vs substrate-level phosphorylation 9:00 Quick quiz 2 9:22 Respiratory balance sheet: net 38 ATP from one glucose 9:53 Amphibolic pathway: respiration linked to synthesis 10:22 Respiratory quotient (RQ): identifying the fuel 11:04 Quick quiz 3 11:30 One-minute recap Next chapter: Plant Growth and Development The narration is AI-generated (a synthetic voice, not a real person's). Chapter content follows the NCERT syllabus.
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    13 分