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Title: Nerve Ending, SEM
Caption: A scanning electron microscope picture of a nerve ending. It has been broken open to reveal vesicles (yellow and blue) containing chemicals used to pass messages in the nervous system. A nerve is an enclosed, cable-like bundle of axons (the long, slender projections of neurons) in the peripheral nervous system. A nerve provides a common pathway for the electrochemical nerve impulses that are transmitted along each of the axons to peripheral organs. Vesicles are a basic tool used by the cell for organizing cellular substances. Vesicles are involved in metabolism, transport, and enzyme storage. They can also act as chemical reaction chambers.
Category: histology
Credit: Album / Science Source
Image size: 4200 × 3353 px | 40.3 MB
Print size: 35.6 × 28.4 cm | 1653.5 × 1320.1 in (300 dpi)