Transverse section through the mid-brain. The salient features are the cerebral aqueduct (Aq), the pineal gland (P), the pulvinar (Pv), the medial geniculate body (Gm), the lateral geniculate body (Gl) receiving the termination of the optic tract, the red nucleus (R), the medial fillet (Mf) about to enter the thalamus at a more frontal level, the crus cerebri (Cr), the substantia nigra (Sn), and the issuing fibres of the oculo-motor nerve (III).

Original card