Stem cells play a key role in how our brains develop. Here’s how they help:

1. Neurogenesis:

   • During development, the human brain creates about 86 billion neurons, which are the nerve cells that send messages.
   • Neural stem cells change into neurons and glial cells. Glial cells support the brain’s structure and health.

2. Synaptogenesis:

   • In the early stages of brain development, more than 100 trillion synapses are made. Synapses are the connections between neurons.
   • Stem cells help these connections develop and change, which is really important for learning and remembering things.

In short, stem cells are vital for making our brains work properly and helping them grow.