Neuromuscular junction, artwork
Wall Art and Photo Gifts from Science Photo Library
Neuromuscular junction, artwork
Neuromuscular junction. Computer artwork showing the juntion between a neuron (nerve cell, light blue) and a muscle cell, known as a neuromuscular junction. The structure of the muscle cell, also known as a muscle fibre, is also shown. The cell is surrounded by a plasma membrane called the sarcolemma (cream). Within the cell are myofibrils, bundles of actin and myosin fibres (pink) surrounded by a sarcoplasmic reticulum (yellow). The sarcoplasmic reticulum holds a reserve of calcium ions, which are needed for contraction. Mitochondria (dark blue) within the myofibrils provide the energy needed for contraction. Messages are passed from the axon of the neuron, via neurotransmitters, to the muscle telling it when to contract
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9243043
© HENNING DALHOFF / SCIENCE PHOTO LIBRARY
Actin Axon Cut Away Fiber Filament Mitochondria Mitochondrion Muscle Fibre Myofibril Myofibrils Myosin Plasma Membrane Sarcolemma Synapse Synaptic Cutouts Muscle Cell Musculature Nervous System
EDITORS COMMENTS
This artwork showcases the intricate neuromuscular junction, where a neuron and muscle cell meet. The computer-generated illustration provides a detailed insight into the structure of both cells involved in this vital connection. The light blue neuron extends its axon towards the muscle fiber, forming a synapse that allows communication between them. The muscle cell, also known as a muscle fiber, is depicted with precision. Its sarcolemma, represented in cream color, envelops the entire cell and acts as a protective plasma membrane. Inside the muscle fiber are myofibrils - bundles of pink actin and myosin fibers responsible for contraction. A yellow sarcoplasmic reticulum can be observed surrounding these myofibrils within the muscle cell. This specialized structure holds reserves of calcium ions essential for initiating contractions. Additionally, dark blue mitochondria within the myofibrils provide energy required for muscular movement. The artwork emphasizes how messages are transmitted from the axon to the muscle through neurotransmitters at this junction point. These signals prompt coordinated contractions by instructing when to contract or relax specific muscles. With its white background and cut-away style presentation, this illustration offers an anatomically accurate representation of this crucial biological process occurring within our bodies' nervous system. It serves as an educational tool to understand neuromuscular function while highlighting key components such as filaments (actin), musculature, synapses (axon), motor end plates, T tubules (T-tubule), and sacroplasmic reticulum among others.
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