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Eye muscle, TEM C014 / 1468
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Eye muscle, TEM C014 / 1468
Eye muscle. Transmission electron micrograph (TEM) of a section through a striated muscle cell from the ciliary muscle of a human eye, showing mitochondria (dark green) and sarcoplasmic reticulum (yellow) that separates the myofibrils (light green). Basal lamina tissue and collagen (white, bottom) surround the cells membrane (purple). The ciliary muscle is a ring of striated smooth muscle in the eyes middle layer that is contracted to alter the curvature of the lens and focus light on the retina at the back of the eye. Magnification: x8000 when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9228941
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Basal Lamina Cell Biology Ciliary Body Collagen Cytological Cytology Histological Histology Inside Internal Iris Ligament Ligaments Membrane Mitochondria Mitochondrion Muscles Muscular Myofibril Myofibrils Myological Myology Ocular Ophtalmological Ophthalmology Physiological Physiology Sarcoplasmic Reticulum Sight Tissue Transmission Electron Micrograph Transmission Electron Microscope Vision
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This photo print, captured by Steve Gschmeissner from the Science Photo Library, offers a mesmerizing glimpse into the intricate world of human eye muscles. The image showcases a transmission electron micrograph (TEM) of a section through a striated muscle cell found in the ciliary muscle of an eye. The remarkable details within this TEM reveal various components that contribute to our vision. Dark green structures represent mitochondria, which play a crucial role in energy production for these cells. Meanwhile, yellow highlights indicate the presence of sarcoplasmic reticulum, responsible for regulating calcium levels and aiding in muscle contraction. The myofibrils, depicted in light green hues, are separated by this network of sarcoplasmic reticulum. Surrounding the cell membrane is basal lamina tissue and collagen shown as white at the bottom of the image. Situated within the middle layer of our eyes, known as the ciliary body or iris muscles, this ring-shaped structure consists of striated smooth muscle fibers. These muscles contract to modify lens curvature and focus incoming light onto our retina at the back of our eyes. With its x8000 magnification when printed 10 centimeters wide, this photograph allows us to appreciate both internal anatomy and physiological processes that enable sight. It serves as a testament to how biology intertwines with ophthalmology and provides valuable insights into cellular structures essential for vision function.
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