Images Dated 5th December 2002
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Choose from 26 pictures in our Images Dated 5th December 2002 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.
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Featured 5 Dec 2002 Print
ATPase muscle enzyme
Calcium pumping ATPase enzyme. Computer model of an electrostatic potential surface map of part of the ATPase enzyme that pumps calcium in and out of muscle cells and controls muscle contractions. The name ATPase refers to this enzyme's ability to break up the ATP (adenosine triphosphate) molecule and release energy. This ATPase uses the energy to pump calcium ions in and out of muscle cells, and it is found in muscle cell membranes. Calcium ions are central to the process of muscle contraction. Enzymes are catalysts and so promote reactions and are not used up. They are also proteins. Proteins are long chains of amino acids. This protein has around 1000 amino acids and about 15, 000 atoms
© PASIEKA/SCIENCE PHOTO LIBRARY
Featured 5 Dec 2002 Print
Coloured X-ray of a spinal column nerve stimulator
Spinal column nerve stimulator. Coloured X-rayof the wires (green) of a spinal nerve stimulator.The spine (yellow) runs from top to bottom, withthe pelvis at lower frame. The wires lead to thestimulator (not seen), implanted under the skinnear the lowest rib. This male paraplegic isparalysed from the waist down. The wires enter thespinal canal through a hole cut between the 4th(L4) and 5th (L5) lumbar vertebrae (L5, the firstvertebra above the pelvis, is below L4). The wiresattach to the nerve roots of the sacral vertebraeS2-4 in L5. Using an external radio transmitter, bladder, bowel and erection control is restored
© Science Photo Library
