Muscles
Muscle is a soft tissue of animals. Muscle cells contain protein filaments that slide past one another, producing a contraction that changes both the length and the shape of the cell. Muscles function to produce force and cause motion. They are primarily responsible for maintenance of and changes in posture, locomotion of the organism itself, as well as movement of internal organs, such as the contraction of the heart and movement of food through the digestive system via peristalsis.
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Famous quotes containing the word muscles:
“All of this,
and the curious knee-cap,
fitted above the wrought greaves,
and the sharp muscles of your back
which the tunic could not cover.”
—Hilda Doolittle (1886–1961)
“What is this beast, she thought,
with muscles on his arms
like a bag of snakes?
What is this moss on his legs?
What prickly plant grows on his cheeks?
What is this voice as deep as a dog?”
—Anne Sexton (1928–1974)
“Light
Flashed from his matted head and marble feet,
He grappled at the net
With the coiled, hurdling muscles of his thighs:
The corpse was bloodless, a botch of reds and whites,”
—Robert Lowell (1917–1977)