Unmyelinated nerve, TEM
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Unmyelinated nerve, TEM
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. Magnification: x8, 0008, when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9241661
© MICROSCAPE/SCIENCE PHOTO LIBRARY
Axon Axons Black And White Cell Biology Cytological Cytology Fibres Histological Histology Nerve Nerve Fibre Nerves Neuron Neurone Neurones Neurons Organelle Organelles Schwann Cell Transmission Electron Micrograph Transmission Electron Microscope Unmyelinated Cells Nervous System Neurological Neurology Section Sectioned
EDITORS COMMENTS
This print from Science Photo Library showcases the intricate structure of an unmyelinated nerve, as seen through 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. The absence of myelin sheaths has significant implications for nerve impulse conduction speed. Unlike myelinated nerves that can transmit impulses at speeds of approximately 100 meters per second, unmyelinated nerves have a slower conduction rate of around 1 meter per second. This disparity underscores the vital role played by myelin in facilitating rapid and efficient communication within our nervous system. Displayed in black and white, this photograph beautifully captures the intricacies and complexities present within biological structures. With a magnification level of x8,000 when printed at 10 centimeters wide, it offers viewers an up-close look into the world of cells and neurons. As we delve into this mesmerizing image, we gain insight into neurology and cytology while appreciating the beauty inherent in scientific exploration. It serves as a reminder that even on a microscopic scale, there is immense complexity to be discovered and understood.
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