Examples of myocyte in the following topics:
-
- Myocytes, sometimes called muscle fibers, form
the bulk of muscle tissue.
- The sarcolemma of myocytes contains numerous invaginations
(pits) called transverse tubules which are usually perpendicular to the length
of the myocyte.
- Each myocyte contains multiple nuclei due to their
derivation from multiple myoblasts, progenitor cells that give rise to
myocytes.
- These myoblasts asre located to the periphery of the myocyte and flattened so
as not to impact myocyte contraction.
- Each myocyte can contain many thousands of myofibrils.
-
- Muscle cells,
or myocytes, contain myofibrils comprised of actin and myosin myofilaments
which slide past each other producing tension that changes the shape of the
myocyte.
- Numerous myocytes make up muscle tissue and the controlled production
of tension in these cells can generate significant force.
- Morphologically
skeletal myocytes are elongated and tubular and appear striated with multiple peripheral
nuclei.
- Cardiac myocytes
are shorter than skeletal equivalents and contain only one or two centrally
located nuclei.
- Smooth muscle
myocytes are spindle shaped with a single centrally located nucleus.
-
- However, when multiplied by the number of sarcomeres in a myofibril, myofibrils in a myocyte and myocytes in a muscle, the amount of force and movement generated is significant.
