sarcoplasm

The plasma membrane is called the sarcolemma with the cytoplasm known as the sarcoplasm.

Cl ions also diffuse into the sarcoplasm to aid the repolarization phase.

In the sarcoplasm are the myofibrils.

Within the sarcoplasm are many perpendicular myofibrils composed of smaller filaments called myofilaments.

The sarcolemma contains the cytoplasm called sarcoplasm.

On closer examination, the individual muscle fibers contained fine vacuoles formed within the sarcoplasm (Figure 4B, arrows).

Glycolysis takes place in the cytoplasm of normal body cells, or the sarcoplasm of muscle cells.

Calcium ions are then released from the sarcoplasmic reticulum into the sarcoplasm and subsequently bind to troponin.

The gene product is found primarily in the perinuclear region, the sarcolemmal membrane, and in the reticular pattern of the sarcoplasm.

When the muscle cell is stimulated to contract by an action potential, calcium channels open in the sarcoplasmic membrane and release calcium into the sarcoplasm.

The calcium ions leave the troponin molecule in order to maintain the calcium ion concentration in the sarcoplasm.

The fibre is surrounded by an outer membrane, the sarcolemma, which encloses the nucleated sarcoplasm in which the fibrils are embedded.

At this point, voltage-gated calcium channels on the cell membrane open and allow calcium ions to pass through, into the sarcoplasm of muscle cell.

The concentration of calcium within muscle cells is controlled by the sarcoplasmic reticulum, a unique form of endoplasmic reticulum in the sarcoplasm.

Exercises of 6-12 reps cause hypertrophy of the sarcoplasm in slow-twitch and high-twitch muscle fibers, contributing to overall increased muscle bulk.

Calcium ions bind to ryanodine receptors on the sarcoplasmic reticulum causing a flux of calcium ions to the sarcoplasm.

The sarcoplasmic reticulum releases its calcium ions to the sarcoplasm where it reacts with troponin and tropomyosin molecules, which are associated with actin.

The delayed opening of more Ca2+-activated K+ channels, which are activated by build-up of Ca2+ in the sarcoplasm, while the Ca2+ channels close, ends the plateau.

His name is also associated with "Krause's membranes", which are isotropic bands in striated muscle fiber that consist of disks of sarcoplasm and connect the individual fibrils.

Lehninger asserts that Kölliker was among the first to notice the arrangement of granules in the sarcoplasm of striated muscle over a period of years beginning around 1850.

The cardiac action potential spreads distally to the small branches of the Purkinje tree via the flux of cations through gap junctions that connect the sarcoplasm of adjacent myocytes.

The sarcoplasm of a muscle fiber is comparable to the cytoplasm of other cells, but it houses unusually large amounts of glycosomes (granules of stored glycogen) and significant amounts of myoglobin, an oxygen binding protein.

The fibrils become small, many mitochondria and most of the myofilaments disappear and little is eventually left beyond tracheoles, lysosomes and some granular sarcoplasm (e.g. Atkins and Farris, 1962; Bhakthan, Borden and Nair, 1970).

VX blocks the action of acetylcholinesterase, thus resulting in initial violent contractions, followed by sustained supercontraction restricted to the subjunctional endplate sarcoplasm and prolonged depolarizing neuromuscular blockade, the latter resulting in flaccid paralysis of all the muscles in the body.

They may be scattered randomly throughout the sarcoplasm or arranged between fibrils opposite the Z-disks; in the flight-muscles of the Odonata they form large slab-like structures and in the powerful fibrillar indirect flight-muscles of Hymenoptera and Diptera the giant mitochondria form conspicuous "sarcosomes".