What are the constituents of the sarcoplasm?

-Several hundreds of ovoid nuclei aligned at the periphery of the cell, against the plasma membrane and oriented in the longitudinal direction of the cell. -Numerous and large mitochondria grouped in the vicinity of the nuclei and aligned between myofibrils. -Highly developed sarcoplasmic reticulum (SER) that forms a network participating in the sarcotubular system or T-system -Cytoskeleton formed mainly of microtubules and IFs of desmin -Lipid vacuoles and glycogen close to the mitochondria -Myoglobin red pigments which fix oxygen and deliver it to the mitochondria. -Plasma membrane is called sarcolemma and is doubled by basal lamina.