Several of the structures in the muscle cell are given special names. For example, the cytoplasm of a muscle fiber is called the sarcoplasm. Which of the following is truly a unique structure to muscle cells (not just a renamed one)?Multiple Choicecytoplasmnucleusendoplasmic reticulumtransverse (T) systemplasma membrane

What is a muscle fiber structure formed from the sarcolemma that penetrates into the cells?Multiple choice question.SarcolemmaMyofibrilsSacroplasmic reticulumT (transverse) tubules

A sarcomere Blank______.Multiple choice question.is the same thing as sarcoplasmic reticulumis the same thing as a muscle cellcontains both actin and myosincontains either actin or myosin

Deep inward extensions of the sarcolemma form a tunnel-like network inside the muscle cell known as ___________.Group of answer choicestransverse tubulessarcoplasmic reticulummyofilamentsmyofibrils

An elaborate network of membranes in skeletal muscle fibers that functions as calcium storage is Group of answer choicessarcolemmamyofibrilssarcoplasmsarcoplasmic reticulum

What causes the striated appearance of skeletal muscle fibers?Multiple ChoiceLocation of the cisternaeOrganization of components of the sarcomeresArrangement of transverse tubulesPosition of the sarcoplasmic reticulum network