Baby Brain Growth! 🍼➡️🧒
📊 Brain Weight Over Time
- Newborn 🍼: 350g → Dense cells, few fibers 🧫
- 2-3 months 📅: 500g → Grey/white matter forming 🔀
- 6-8 months 📅: 660g → Clear grey/white distinction 🧠
- 1 year 🎂: 925g → Fewer cells, MORE connections! 🔗⬆️
- 3 years 🧒: 1080g → Complex behaviors emerge! 🎯
- 6-14 years 👦: 1350g → Mature cognition! ✨
👶 Behavioral Milestones
- Neonate: Reflexes (Moro, grasp, rooting) 🔄
- 2-3 mos: Visual-motor integration! 👁️💪
- 6-8 mos: Higher cognitive functions! 🧠💭
- 1 year: Interaction, stranger anxiety! 🌍😰
- Eventually: Roll 🔄, Sit 🪑, Crawl 🚼, Walk 🚶!
⏰ Critical Sensitive Period
- Brain vulnerable during rapid growth! 🧠⚠️📈
- Only during specific windows! ⏰
- Before/after = No effect! ⏪❌⏩
- Fetus depends on mother! 🤰🔗
🌍 Major Influences on Brain
🍽️ Nutrition (CRITICAL!)
- Critical Period: 2nd trimester to 1st year! 📅
- Malnutrition = Fewer cells forever! 🧫⬇️❌
- Cells need protein to divide! 🥩🧫
- IRREVERSIBLE DAMAGE! ⚠️💔
💨 Oxygen Levels
- Hypoxia = Brain damage! 💨⚠️
- Mother's circulation matters! 🩸
- Neurons die without oxygen! 💀
- Similar to mental retardation! 🧠⚠️
💪 Motor Activity
- Movement in uterus = Stronger muscles! 🤰🏃💪
- Exercise builds connections! 🔗
- Sensory responses develop too! 👂👁️
🧬 Hormones
- Critical for differentiation! 🔀
- Timing is everything! ⏰
📡 External Stimulation
- Needed for normal organ development! 💪
- Sensory deprivation = Defects! ❌💔
💊 Drugs (DANGER!)
- Teratogenic effects! ☠️
- Thalidomide = First discovered! 😴💊⚠️
- Also: Morphine, heroin, alcohol, nicotine, cocaine! 💉🍷🚬
- AVOID during pregnancy! ⚠️🤰
🦠 Viral Infections
- Measles and others damage brain! 🤒🧠
- Can cause mental retardation and blindness! ⚠️🙈
☢️ Radiation
- Damages rapidly dividing cells! ⚡🧫💀
- Growth spurt period most vulnerable! 📈⚠️
🔄 Motor + Sensory = Interactive!
- Motor stimulation → Sensory input 💪➡️📡
- Sensory input → Motor development 📡➡️💪
- They stimulate each other! 🤝
🔑 Key Takeaways
- Brain weight quadruples in first year! 🍼📈
- Fewer cells, more connections over time! 🧫⬇️🔗⬆️
- Critical periods are crucial! ⏰✅
- Nutrition is NON-NEGOTIABLE! 🍽️⚠️
- Environment shapes the brain! 🌍🧠
- Damage can be permanent! 💔❌
- Mother's health = Baby's brain! 🤰🧠