NEET Biology Notes PDF 2027 | Class 11 & 12

Hello friend 👋 NEET Biology Chapter 22: Chemical Coordination and Integration Free Detailed Notes 📚 Pituitary + Thyroid + Adrenal + Pancreas + Hormones PDF + Diagrams + MCQs Want it? DM me ❤️  ### *1. Endocrine System* *Endocrine Glands*: Ductless glands. Secrete *hormones* directly into blood   *Exocrine Glands*: Have ducts. Ex: Salivary, Sweat, Digestive glands   *Mixed Glands*: Both endocrine + exocrine. Ex: Pancreas, Gonads *Hormones*: Chemical messengers. Produced in trace amounts. Regulate metabolism ### *2. Human Endocrine System - Major Glands* #### *A. Pituitary Gland / Hypophysis* *Location*: Below hypothalamus. Attached by stalk   *Divided into 3 parts:* *1. Anterior Pituitary / Adenohypophysis* - *Growth Hormone GH / Somatotropin*: Growth of bones & tissues. Excess → Gigantism. Deficiency → Dwarfism - *Prolactin PRL*: Milk synthesis in mammary glands - *TSH*: Stimulates thyroid gland - *ACTH*: Stimulates adrenal cortex - *Gonadotropin...

Hello friend 👋 NEET Biology Chapter 21: Neural Control and Coordination Free Detailed Notes 📚 Brain + Neuron + Reflex + Disorders PDF + MCQs ### *Chapter 21: Neural Control and Coordination* ### *1. Neural System in Humans* *Functions*: Point-to-point coordination, Fast, Voluntary + Involuntary actions *2 Parts:* 1. *Central Neural System CNS*: Brain + Spinal Cord 2. *Peripheral Neural System PNS*: All nerves of body *PNS is further divided:* - *Somatic Neural System SNS*: Voluntary. Transmits impulses from CNS to skeletal muscles - *Autonomic Neural System ANS*: Involuntary. Controls visceral organs       - *Sympathetic*: Fight & Flight      - *Parasympathetic*: Rest & Digest - *Visceral Neural System*: Part of ANS. Inner organs ### *2. Neuron - Structural & Functional Unit of Neural System* *Parts of Neuron:* 1. *Cell body / Cyton*: Contains nucleus, Nissl's granules. Protein synthesis 2. *Dendrites*: Short branches. Receive impulses 3....

*Hello Friends 👋 Today we will study Chapter 19 of Class 11 NCERT Biology: *Excretory Products and their Elimination* These notes are specially made for NEET aspirants. You’ll get detailed + short notes here. Read till the end and don’t forget to save these notes for revision 📚 Let’s get started... Chapter 19: Excretory Products and their Elimination - Class 11 NCERT*   _Detailed Short Notes for NEET - Expanded Version_ ### *1. EXCRETION* *Definition*: Removal of nitrogenous wastes and other toxic metabolic by-products from the body. *Why needed?*  To maintain *homeostasis* - constant internal environment for proper functioning of enzymes and cells. *Mode of excretion depends on*: Habitat, water availability, and evolutionary adaptation. --- ### *2. EXCRETORY PRODUCTS* Based on main nitrogenous waste Product Example Animals Toxicity Water Needed Solubility **Ammonia** Aquatic animals, bony fishes, tadpole Most toxic Very high Highly soluble **Urea** Mammals, amphibians,...

NEET Dropper here! Dropping complete Chapter 11 Notes for all NEET 2027 Aspirants 🔥  ### *NEET 2027: Chapter 11 Organisms and Populations - Expanded Notes*   _Class 12 Biology | NCERT Line-by-Line + PYQ + Diagrams_   ### *1. Organism & Its Environment*   - *Ecology*: Term by Ernst Haeckel. Study of interactions among organisms & with abiotic environment.   - *Hierarchy*: Organism → Population → Community → Ecosystem → Biome → Biosphere.   - *Major Abiotic Factors*:       1. *Temperature*: Most ecologically relevant. Affects enzyme kinetics. Avg temp on land: 0-50°C.       2. *Water*: Life originated in water. Desert = <10cm rainfall. Productivity of ocean limited by light.       3. *Light*: Photosynthesis, foraging, migration, reproduction. UV = harmful.       4. *Soil*: Weathering of rocks. pH, minerals, topography decide vegetation. ...