Medical term:
sarcomere
sarcomere
[sahr´ko-mēr]the contractile unit of a myofibril; sarcomeres are repeating units, delimited by the Z bands along the length of the myofibril.
Thick and thin filaments are organized into contractile units called sarcomeres. A sarcomere extends from one Z line to the next and represents the fundamental unit of muscle contraction. From Copstead, 1995.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
sar·co·mere
(sar'kō-mēr),The segment of a myofibril between two adjacent Z lines, representing the functional unit of striated muscle.
[sarco- + G. meros, part]
Farlex Partner Medical Dictionary © Farlex 2012
sarcomere
(sär′kə-mîr′)n.
One of the repeating contractile segments into which a myofibril is divided, composed of actin and myosin filaments and giving striated muscle its distinctive bands.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
sar·co·mere
(sahr'kō-mēr)The segment of a myofibril between two adjacent Z lines, representing the functional unit of striated muscle.
[sarco- + G. meros, part]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
sarcomere
The structural unit of a striped muscle fibre (myofibril).Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
Fig. 273 Sarcomere . Muscle fibrils consist of alternating groups of the thick and thin filaments (dark and light bands), the distance between two Z-membranes being termed a ‘sarcomere’.
sarcomere
that part of the muscle fibre which is contained between two Z-MEMBRANES, and is the contractile element of the fibre.See MUSCLE, I-BAND.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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