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筋肉。胃や腸・膀胱・血管などの内臓の壁に見られる（心臓を除く）

a hollow muscular organ in the pelvic cavity of females; contains the developing fetus

女性の骨盤内にある空洞のある筋肉質の器官。胎児を育てる場所。