Assertion: ampulla's muscle | /r/CapableOf | help expel semen
Facets:
value: toward the epididymis
type: TRANSITIVE-OBJECT
value: during ejaculation
type: TEMPORAL
Source sentences:
text: The prostate also contains some smooth muscles that help expel semen during ejaculation.
text: The epithelium is surrounded by a band of smooth muscle that helps to propel the sperm toward the epididymis.