Retinal rod cell, TEM C013 / 4805
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Retinal rod cell, TEM C013 / 4805
Retinal rod cell. Transmission electron micrograph (TEM) of a section through a rod cell from the retina of an eye, showing the inner segment (bottom) filled with mitochondria (green), and outer segment made up of stacks of folded membranes (purple). These folds contain the photo pigment rhodopsin. The retina is a thin tissue layer on the inner eye responsible for sight. Rod cells are long photoreceptor nerve cells that respond to dim light. They compliment cone cells (not shown) that detect colour. Magnification: x18, 000 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9195071
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Detection Eyesight Fold Folds Histological Histology Membrane Membranes Mitochondria Mitochondrion Nerve Cell Neuron Neurone Neurones Neurons Ocular Outer Photoreceptor Photoreceptors Receptor Receptors Retina Retinal Rhodopsin Rod Cell Rods Segment Segments Sight Tissue Transmission Electron Micrograph Transmission Electron Microscope Vision Visual Cells Micrography Nervous System Section Sectioned Sensory System
EDITORS COMMENTS
This print captures the intricate details of a retinal rod cell, providing a glimpse into the fascinating world of vision. Taken using a transmission electron microscope (TEM), this image showcases the inner and outer segments of the rod cell with remarkable clarity. The bottom part of the cell, known as the inner segment, is filled with vibrant green mitochondria. These energy-producing powerhouses play a crucial role in maintaining cellular functions. Above it lies the outer segment composed of stacked folded membranes, depicted in striking purple hues. These folds house rhodopsin, a light-sensitive pigment responsible for capturing photons and initiating visual signals. Situated within the retina - a thin tissue layer at the back of our eyes - rod cells are specialized photoreceptor nerve cells that excel in low-light conditions. They work alongside cone cells to facilitate our sense of sight by detecting different aspects such as color and brightness. With an impressive magnification level of x18,000 when printed at just 10 centimeters wide, this photograph provides us with an extraordinary close-up view into one tiny component that contributes to our complex visual system. It serves as a reminder of both nature's intricacy and mankind's ability to explore and understand its wonders through scientific advancements like TEM imaging techniques.
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