They can be intrusive or extrusive-dependingon where they cooled off.
2
Thus, granite is an igneous, intrusive rock; lava is an igneous, extrusive rock.
3
When magmas reach the surface red hot, they form extrusive rocks, such as volcanic rocks.
4
Isoprenaline caused a marked intrusive tooth movement and a decrease in blood pressure, without an extrusive tooth movement and increase in blood pressure.