Definitions for sarcomere
ˈsɑr kəˌmɪərsar·com·ere

Princeton's WordNetRate this definition:0.0 / 0 votes

1. sarcomerenoun

   one of the segments into which a myofibril is divided

WiktionaryRate this definition:0.0 / 0 votes

1. sarcomerenoun

   The contractile unit of the myofibril of a striated muscle.

WikipediaRate this definition:0.0 / 0 votes

1. Sarcomere

   A sarcomere (Greek σάρξ sarx "flesh", μέρος meros "part") is the smallest functional unit of striated muscle tissue. It is the repeating unit between two Z-lines. Skeletal muscles are composed of tubular muscle cells (called muscle fibers or myofibers) which are formed during embryonic myogenesis. Muscle fibers contain numerous tubular myofibrils. Myofibrils are composed of repeating sections of sarcomeres, which appear under the microscope as alternating dark and light bands. Sarcomeres are composed of long, fibrous proteins as filaments that slide past each other when a muscle contracts or relaxes. The costamere is a different component that connects the sarcomere to the sarcolemma. Two of the important proteins are myosin, which forms the thick filament, and actin, which forms the thin filament. Myosin has a long, fibrous tail and a globular head, which binds to actin. The myosin head also binds to ATP, which is the source of energy for muscle movement. Myosin can only bind to actin when the binding sites on actin are exposed by calcium ions. Actin molecules are bound to the Z-line, which forms the borders of the sarcomere. Other bands appear when the sarcomere is relaxed.The myofibrils of smooth muscle cells are not arranged into sarcomeres.

ChatGPTRate this definition:0.0 / 0 votes

1. sarcomere

   A sarcomere is the basic functional unit of striated muscle tissue, consisting of a regular arrangement of contractile proteins, primarily actin and myosin. It is responsible for muscle contraction and is delimited by two adjacent Z-lines or Z-discs where actin filaments are anchored. The complex interactions of these proteins allow for the shortening and lengthening of the muscle fiber, thus generating movement and force. The sarcomere's structure gives the striated appearance to the muscle fiber.

WikidataRate this definition:0.0 / 0 votes

1. Sarcomere

   A Sarcomere' is the basic unit of a muscle. Muscles are composed of tubular muscle cells which are formed in a process known myogenesis. Muscle cells are composed of tubular myofibrils. Myofibrils are composed of repeating sections of sarcomeres, which appear under the microscope as dark and light bands. Sarcomeres are composed of long, fibrous proteins that slide past each other when the muscles contract and relax. Two of the important proteins are myosin, which forms the thick filament, and actin, which forms the thin filament. Myosin has a long, fibrous tail and a globular head, which binds to actin. The myosin head also binds to ATP, which is the source of energy for muscle movement. Myosin can only bind to actin when the binding sites on actin are exposed by calcium ions. Actin molecules are bound to the Z line, which forms the borders of the sarcomere. Other bands appear when the sarcomere is relaxed. A muscle cell from a biceps may contain 100,000 sarcomeres. The myofibrils of smooth muscle cells are not arranged into sarcomeres.

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Numerology

1. Chaldean Numerology

   The numerical value of sarcomere in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of sarcomere in Pythagorean Numerology is: 7

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=sarcomere
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Sarcomere
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Sarcomere
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=sarcomere