Noun smooth muscle has 2 senses
  1. smooth muscle, involuntary muscle - 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)
    --1 is a kind of muscle, musculus
    --1 has particulars: myometrium; musculus sphincter ani internus
  2. smooth muscle - muscle tissue that does not appear striated under the microscope; has the form of thin layers or sheets
    --2 is a kind of
    muscle, muscular tissue
    --2 has part: smooth muscle cell
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