Layers of the hippocampus

They are the layers of the hippocampus (hippocampus proper / Cornu Ammonis) ✅

Correct, exam-perfect statement

Breakdown of the layers (deep → superficial) 🧠

1. Stratum oriens

   • Contains basal dendrites of pyramidal cells

   • Interneurons and axons

   • Lies closest to the alveus

2. Stratum pyramidale

   • Contains pyramidal neuron cell bodies

   • Principal output neurons of the hippocampus

   • Gives rise to fibres forming the alveus → fimbria → fornix

3. Stratum radiatum

   • Contains apical dendrites of pyramidal cells

   • Receives synaptic input (e.g. Schaffer collaterals)

4. Stratum moleculare

   • Most superficial layer

   • Rich in synapses and distal dendrites

   • Receives cortical input (via entorhinal cortex)

High-yield note (often tested)

• The hippocampus is archicortex → 3-layered cortex

• These layers represent subdivisions of those 3 basic layers

One-line oral exam answer

If you want, I can also:

• Compare hippocampus vs dentate gyrus layers

• Link layers to memory circuits

• Give histology slide identification tips