involuntary muscle マイ単語帳に追加

平滑筋 不随意筋

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).

意識的な制御なしに収縮する、胃、腸、膀胱、血管などの（心臓を除く）内臓器官の壁に見られる筋肉。