inferior petrosal sinus n.
A paired sinus of the dura mater that connects the cavernous sinus with the superior bulb of the internal jugular vein.
- Inferior phrenic vein
inferior phrenic vein n. A vein that drains the diaphragm and empties on the right side into the vena cava and on the left side into the left suprarenal vein.
noun, Astronomy. 1. either of the two planets whose orbits are inside the orbit of the earth: Venus and Mercury. noun 1. either of the planets Mercury and Venus, whose orbits lie inside that of the earth inferior planet Either of the planets Mercury or Venus, whose orbits lie between Earth and the Sun. Because […]
- Inferior posterior serratus muscle
inferior posterior serratus muscle inferior posterior ser·ra·tus muscle (sə-rā’təs) n. A muscle with origin from the two lower thoracic and two upper lumbar vertebrae, with insertion into the last four ribs, whose action draws the lower ribs backward and downward, with nerve supply from the ninth to the twelfth intercostal nerves.
- Inferior pulmonary vein
inferior pulmonary vein n.