1. inferior labial vein a tributary of the facial vein that drains the lower lip
  2. anterior facial vein a continuation of the angular vein
  3. superior labial vein a tributary of the facial vein that drains the upper lip
  4. anterior cerebral vein accompanies the anterior cerebral artery and empties into the basal vein
  5. anterior cardinal vein a major drainage channel from the cephalic part of the body
  6. intervertebral vein one of several veins accompanying spinal nerves
  7. arteria labialis an artery that is a branch of the facial artery that supplies the lips of the mouth
  8. anterior jugular vein arises below the chin from veins draining the lower face
  9. anterior vertebral vein a vein that accompanies the ascending cervical artery and opens into the vertebral vein
  10. inferior labial artery an artery that is a branch of the facial artery that supplies the lower lip
  11. posterior facial vein posterior branch of the facial vein
  12. intercostal vein several veins draining the intercostal spaces of the rib cage
  13. internal iliac vein a vein that unites with the external iliac vein to form the common iliac vein
  14. inferior cerebral vein veins that drain the undersurface of the cerebral hemispheres and empty into the cavernous and transverse sinuses
  15. interior live oak a small shrubby evergreen tree of western North America similar to the coast live oak but occurring chiefly in foothills of mountain ranges removed from the coast; an important part of the chaparral
  16. interminable tiresomely long; seemingly without end
  17. Mandevilla boliviensis shrubby climber having glossy leaves and white funnel-shaped flowers with yellow throats
  18. internal cerebral vein two paired veins passing caudally near the midline and uniting to form the great cerebral vein
  19. Interior Department the United States federal department charged with conservation and the development of natural resources; created in 1849
  20. interoperability the ability to exchange and use information