NEET Biology Notes PDF 2027 | Class 11 & 12

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 Friend 👋 NEET 2027 ki taiyari kar rahe ho? Ye NCERT Class 11 Biology Chapter 12 Mineral Nutrition ke sabse important short notes hain. Inko padh ke 1-2 Question NEET me pakke fix hain. ### *1. HYDROPONICS = Soil-less Culture* Inventor = Julius von Sachs 1860 Use = Test Essentiality of Elements + Commercial Farming Essential = Aeration + pH + Balanced Nutrients Example = Tomato, Lettuce, Seedless Cucumber Aeroponics = Roots in Air + Nutrient Mist = NASA ### *2. ESSENTIAL ELEMENTS = 17 Total* `Criteria by Arnon & Stout` 1. Element needed for Complete Life Cycle 2. Requirement Specific = No Substitute 3. Directly Involved in Metabolism **Type** **Conc.** **Elements** **Macronutrients = 9** >10 m mole/kg **C H O N P K Ca Mg S** = **C**hhotu **H**as **O**nly **P**layed **K**ing **N**ow **S**ince **Ca**lcium **Mg** **Micronutrients = 8** <10 m mole/kg **Fe Mn Cu Zn B Mo Cl Ni** = **F**or **M**y **Cu**te **Z**inc **B**ro **Mo**ney **Cl**ear **Ni**ce ### *3. MACRONUTRIENTS - ...