A stem or narrow part by which some part is attached to another. Cerebral peduncle, inferior, middle, and superior cerebellar peduncles connect different parts of the neuraxis. L. pellucidus, allowing the passage of light, transparent. Septum pellucidum is a thin membrane extending between the corpus callosurn and fornix. It separates the frontal horns of the lateral ventricle.
Pineal gland resembles a pine cone.
First described by Berengarius about 1500. The pons is the part of the brain stem intermediate between the medulla oblongata and mid-brain. Also known as pons varolii. Described by Varolius of Padua in 1573. L, pulvinus, a cushion.