Peduncle (anatomy)

In anatomy, a peduncle refers to a stalk-like structure that connects a part of the body to another. This connection can involve supporting and conducting pathways, such as blood vessels or nerves. The term is generally used to describe a connection to a larger structure.

Specifically, the term is most commonly associated with structures in the brain. The cerebellar peduncles, for instance, are large bundles of nerve fibers connecting the cerebellum to the brainstem. These peduncles facilitate communication between the cerebellum and other parts of the brain, allowing for coordinated movement and balance. There are superior, middle, and inferior cerebellar peduncles, each connecting to different areas of the brainstem (midbrain, pons, and medulla oblongata, respectively) and carrying different types of information.

The term can also be applied to other anatomical structures where a stalk-like connection is evident, though less frequently. The emphasis is on a connecting stalk or stem supporting or conducting.