🧬 Development of the Nervous System
From Fertilization to Mature Brain
🥚 Stage 1: Early Embryonic Development
🥚
Fertilization
Egg + Sperm
⬇️
🔵
Zygote
Single Cell
⬇️
📋
Ectoderm
→ Nervous System
💪
Mesoderm
→ Muscles/Bones
🫀
Endoderm
→ Organs
🧠 Stage 2: Neurulation Process
📏
Notochord
Day 17
⬇️
📋
Neural Plate
Thickening
⬇️
🌊
Neural Groove
Sides Rise
⬇️
🌀
Neural Tube
Day 21 - Closes
🧩 Stage 3: Primary Brain Vesicles
🌀
Neural Tube
⬇️
🔮
Forebrain
Prosencephalon
⚡
Midbrain
Mesencephalon
🦴
Hindbrain
Rhombencephalon
⬇️
🧠
Telencephalon
Cerebrum
🎯
Diencephalon
Thalamus
⚡
Mesencephalon
Tectum
🌉
Metencephalon
Pons/Cerebellum
🔌
Myelencephalon
Medulla
🔬 Stage 4: Cellular Processes
📈
Proliferation
20,000/min
➡️
🚶
Migration
Inside-Out
➡️
🌱
Maturation
Differentiate
➡️
🔗
Synaptogenesis
Connect
➡️
💀
Apoptosis
Cell Death
🌿 Stage 5: Growth & Guidance
🌿
Growth Cone
Filopodia
🧬
NGF
Nerve Growth Factor
🧭
Chemoaffinity
Chemical Guidance
🗺️
Blueprint
Position Based
⏰ Stage 6: Critical Periods & Influences
⚠️
10-18 Weeks
Max Sensitivity
🍼
30W - 2Yrs
Nutrition Critical
⬇️
☢️
Radiation
🦠
Viruses
💊
Drugs
🍷
Alcohol
🥗
Nutrition
💨
Oxygen
🏠 Back to PSYP610
🧠 Neuroanatomy ➡️
⬆️
🏠
⬇️