smooth_muscle has definitions from the fields of anatomy,zoology
1
[ noun ] (anatomy,zoology) a muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart)
2
[ noun ] (anatomy,zoology) muscle tissue that does not appear striated under the microscope; has the form of thin layers or sheets

Related terms

muscle smooth_muscle_cell

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