The third abdominal segment, the retinaculum, secures the furculum while not in use.
A group of cells that function as a single unit and share a shared structure and function make up tissue. The body processes give it shape and help to store energy and retain heat. The four sets of tissues include epithelia, muscular tissue, nerve tissue, and connective tissue.
The noun tissue derives from the Old French phrase tissu, which denotes "a ribbon, ribbon, or piece of braided fabric." Tissue is a verb that actually meaning "to weave cloth threads.
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