sarcomere

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Related to Sarcomeres: myofibril, H band

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.

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]

sarcomere

/sar·co·mere/ (sahr´ko-mēr) the contractile unit of a myofibril; sarcomeres are repeating units, delimited by the Z bands, along the length of the myofibril.

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.

sarcomere

[sär′kōmir]
Etymology: Gk, sarx + meros, part
the smallest functional, contractive unit of a myofibril. Sarcomeres occur as repeating units, extending from one Z line to the next along the length of the myofibril.
enlarge picture
Sarcomere

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]

sarcomere

The structural unit of a striped muscle fibre (myofibril).
Sarcomereclick for a larger image
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.

sarcomere

length-wise repeating unit of striated muscle, from one Z line to the next; length about 2.5 × 10-6 in fully extended muscle, less in shortened. See also myofibrils.

sarcomere

the contractile unit of a myofibril; sarcomeres are repeating units, delimited by the Z bands along the length of the myofibril.
References in periodicals archive ?
Tenderness, sarcomere length, basic chemical composition and components of colour in the age groups did not differ in many cases.
Analysis of correlation of hot carcass weight and pH of raw beef meat with tenderness, sarcomere length, basic chemical composition and components of colour is presented in Table 1.
Factors originated from the muscle also contribute to meat tenderness, such as intermuscular variation, sensitivity of muscle structural proteins to proteolysis, the distribution of muscular connective tissue and sarcomere length (Koohmaraie et al.
Here the structural hierarchy starts from myofibrils which are composed of repeating units of myosin and actin filaments, called sarcomeres.
While the physiology of DOMS is not completely understood, DOMS is likely related to damage of sarcomeres, ensuing swelling of damaged muscle fibers and subsequent initiation of an inflammatory response (Herbert et al.
Loss of CK can also weaken muscle structure because it helps form the tight lattice in the M-region of sarcomeres, and deteriorate the stability of contracting filaments.
Muscle biopsies have revealed that eccentric exercise causes more damage to the Z-bands in sarcomeres and myofibrils, followed by a major inflammatory reaction, loss of muscle functionality and delayed pain as compared to concentric exercise (Gibala et al.
A large anatomical [theta]p, which allows more sarcomeres to be arranged in parallel, is positively associated with MVC (Cormie et al.
It should be supposed, therefore, that within 60 min after SSE an increase in EEP can not be associated with regeneration of sarcomeres.
By design, the total capacity for tension development is enhanced in pennate muscle by having more sarcomeres arranged in parallel and fewer in series within a given volume of muscle.