Smooth, Skeletal, And Cardiac Muscles
The muscular system consists of all the muscles of the body. Muscles are organs composed mainly of muscle cells, which are also called muscle fibers. Each muscle fiber is a very long, thin cell that can do something no other cell can do. It can contract, or shorten.
CK-12 (High School)
How do the body's muscles help it function?
HS-LS1-2 - Hierarchical Organization , RST.1 - Analysis & Evidence, RST.4 - Key Terms
DEPTH OF KNOWLEDGE (DOK) LEVELS:
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