Covers the pons as the largest part of the brainstem, lying between the medulla and midbrain, and its external features such as the sulci, cerebellar peduncles, fourth ventricle floor, facial colliculus and pontocerebellar angle. It then gives the ventral basilar and dorsal tegmental division, and lists the cranial nerve nuclei and tracts seen in caudal and rostral cross-sections of the pons.
Topic 127 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 5 sections, about 519 words (4 min of reading), with 10 flashcards.
In this note
PONS
External Features:
Development Classification
Caudal cross-section at the level of the colliculus fasciallis:
Rostral cross section at the level of the trigeminal motor nucleus:
PONS
The pons is the largest part of the brainstem, situated above the medulla and below the midbrain
Approximately 2.5 cm in the length
Its name comes from the latin word for "bridge" as it serves as a connection both cerebellar hemispheres by middle cerebellar peduncle (MCP) on each side
Its grey matter contains nuclei of the cranial nerves (V, VI, VII, VIII).
External Features:
1 Bulbopontine sulcus (sulcus bulbopontinus)
marks the transition between the medulla oblongata and the pons
