smooth muscle

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. 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)
• Syn:
involuntary muscle
• Hypernyms:
muscle, musculus
• Hyponyms:
myometrium, musculus sphincter ani internus
2. muscle tissue that does not appear striated under the microscope;
has the form of thin layers or sheets
• Hypernyms:
muscle, muscular tissue
• Part Meronyms:
smooth muscle cell