Sarcoplasm is the
A. cell membrane of a muscle fiber.
B. cytoplasm of muscle cells.
C. structural and functional unit of the skeletal muscle cell.
D. contractile thread that extends the length of the muscle fiber.
E. protein strand composed of actin or myosin.
B
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A. Myoepithelial cells B. Hair receptors C. Piloerector muscles D. Dendritic cells E. Keratinocytes
Protein digestion begins in the ________.
A. mouth B. stomach C. small intestine D. large intestine
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A. Osteocyte B. Osteochondral progenitor cell C. Osteoclast D. Osteoblast
Both depolarization and repolarization are produced by the diffusion of ions down their concentration gradient.
Answer the following statement true (T) or false (F)