GENERAL HISTOLOGY

Detailed explanation-1: -Sarcoplasm is the cytoplasm of a muscle fibre. It is a water solution containing ATP and phosphagens, as well as the enzymes and intermediate and product molecules involved in many metabolic reactions. The most abundant metal in the sarcoplasm is potassium.

Detailed explanation-2: -As mentioned earlier, the plasma membrane of a skeletal muscle fiber is called the sarcolemma. The sarcolemma invaginates into the cytoplasm of the muscle cell (sarcoplasm). This forms membranous tubules that pass across the muscle cells. These are called transverse tubules (or ‘T tubules’).

Detailed explanation-3: -Electron Microscopy of Smooth Muscle The sarcoplasm of smooth muscle cells at each pole of the nucleus houses mitochondria, sarcoplasmic reticulum, Golgi apparatus, and glycogen deposits. Myofilaments are also present, although they are not associated in the paracrystalline configuration as in striated muscle.