Assertion: vein's artery | /r/HasAspect | smooth muscle
Facets:
value: in their tunica media
type: LOCATION
value: to contract
type: PURPOSE
Source sentences:
text: Since smooth muscle is generally found in the media layer, this means that arteries have more smooth muscle to contract than do veins.
text: 2) muscular (distributing) arteries: Medium sized arteries that have more smooth muscle in their tunica media.