Nervous disorders | Alzheimer's cause | brain tumor | brain surgery | Stroke #biospark

🧠 Nervous Disorders | Lecture #16 | Pashto | Class 12 Biology In this lecture, we discuss some important disorders of the nervous system in a simple and concept-based way. The lecture is designed for Class 12 Biology students and explains the basic causes, effects, and major features of common nervous disorders. 📚 Topics Covered in This Lecture: 1. 🧠 Stroke & Its Types What is a stroke? How interruption of blood supply affects brain cells Major types of stroke Basic difference between the major types Effects of stroke on nervous-system functions 2. 🧠 Alzheimer’s Disease What is Alzheimer’s disease? How it affects the brain and nervous system Relationship with memory and cognitive functions Common features associated with the disease 3. 🤕 Headache What is a headache? How headache can be associated with the nervous system Common types and contributing factors Why different types of headaches may produce different symptoms 4. 🧠 Brain Tumor What is a brain tumor? How abnormal cell division can produce a tumor in the brain Types of brain tumors How a tumor can affect surrounding nervous tissue Important question discussed in the lecture: ❓ If neurons cannot normally divide, then how can a tumor form in the brain? 🔬 Concept Focus A major focus of this lecture is understanding that the nervous system contains different types of cells. Although mature neurons generally have very limited ability to divide, other cells of the nervous system can undergo cell division. This helps explain how tumors can develop in nervous tissue. 🎓 For Class 12 Biology Students This lecture is particularly useful for students studying the Nervous System and Nervous Disorders chapter. The concepts are explained in Pashto with simple biological terminology to make difficult topics easier to understand. 📌 Lecture: #16 📌 Topic: Nervous Disorders 📌 Language: Pashto 📌 Level: Class 12 Biology 📌 Channel: Bio Spark 📌 Tagline: Biology Made Easy | Crystal Clear Concept 🔑 Important Concepts • Nervous disorders • Stroke • Types of stroke • Brain and blood supply • Alzheimer’s disease • Memory disorders • Headache • Brain tumor • Abnormal cell division • Neurons and cell division • Nervous system disorders • Brain diseases 🔍 Search Keywords Nervous disorders in Pashto, nervous system disorders, Class 12 Biology Pashto, Biology Class 12 Pashto, stroke and its types, Alzheimer disease in Pashto, headache biology, brain tumor biology, brain tumor explained, neurons cannot divide brain tumor, nervous disorders lecture, human nervous system disorders, Class 12 Biology KP, Pashto Biology lecture, Bio Spark Biology. 👍 If this lecture helps you understand the nervous system more clearly, support Bio Spark by liking the video, sharing it with your classmates, and subscribing to the channel for more Biology lectures. 🔔 Subscribe to Bio Spark – Biology Made Easy | Crystal Clear Concept