Peduncle
Peduncle is a term used in various fields of biology to refer to a stalk or stem-like structure. In botany, a peduncle is the stalk of a flower or an inflorescence. In zoology, it can refer to various types of stalks, such as the eyestalk of a lobster or the stalk connecting the abdomen and cephalothorax of spiders. In anatomy, it refers to a bundle of nerve fibers connecting different parts of the brain.
Botany[edit | edit source]
In botany, a peduncle is a stem supporting an inflorescence, or after fecundation, an fruit. The peduncle is a stem, usually green, though some peduncles are more or less florally colored or neutral in color, having no particular pigmentation. In some species, peduncles are leafless, though others bear leaves, or even cataphylls, as seen in the onion family.
Zoology[edit | edit source]
In zoology, peduncle can refer to various types of stalks. For example, in some arthropods, the peduncle is the stalk attaching the cephalothorax to the abdomen. In some crustaceans, such as lobsters and crabs, the peduncle is the stalk supporting the eye.
Anatomy[edit | edit source]
In anatomy, a peduncle refers to a bundle of nerve fibers connecting different parts of the brain. For example, the cerebral peduncle connects the cerebrum with the brainstem, carrying motor output from the cerebral cortex to the brainstem and spinal cord.
See also[edit | edit source]
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