Unmyelinated nerve, TEM C016 / 5804
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Unmyelinated nerve, TEM C016 / 5804
Unmyelinated nerve. Transmission electron micrograph (TEM) of a section through axon (nerve fibre) bundles of unmyelinated nerves. Unmyelinated nerves do not have the myelin sheaths that wrap around the axons of myelinated nerves. This means the speed of nerve impulse conduction is slower, around 1 metre per second, in unmyelinated nerves compared with about 100 metre per second for myelinated nerves
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9206807
© P. NAVARRO, R. BICK, B. POINDEXTER, UT MEDICAL SCHOOL/SCIENCE PHOTO LIBRARY
Axon Axons Fibres Histological Histology Microscope Nerve Nerve Fibre Nerves Neuron Neurone Neurones Neurons Transmission Electron Transmission Electron Micrograph Transmission Electron Microscope Unmyelinated Nervous System Neurological Neurology Section Sectioned
EDITORS COMMENTS
This print showcases the intricate structure of an unmyelinated nerve, captured using a transmission electron microscope (TEM). The image reveals a section through axon bundles of these nerves, which lack the protective myelin sheaths found in their myelinated counterparts. Unmyelinated nerves play a crucial role in our nervous system, transmitting electrical signals at a slower pace compared to myelinated nerves. While myelinated nerves can conduct impulses at speeds of approximately 100 meters per second, unmyelinated nerves are limited to around 1 meter per second. This disparity in conduction speed highlights the significance of myelin sheaths in facilitating rapid and efficient communication within our bodies. The monochrome composition adds depth and detail to this microscopic view, allowing us to appreciate the complexity and beauty inherent in biological structures. As we delve into the realm of histology and neurology through this photograph, we gain insight into how our neurons function on a cellular level. Captured by P. Navarro, R. Bick, and B. Poindexter from UT Medical School/Science Photo Library, this image serves as both an educational tool for students studying anatomy and biology as well as an artistic representation that showcases the wonders hidden within our own bodies.
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