| Vastus medialis | |
|---|---|
 Muscles of lower extremity (Rectus Femoris has been removed) | |
| Details | |
| Origin | Medial side of femur |
| Insertion | Quadriceps tendon |
| Artery | Femoral artery |
| Nerve | Femoral nerve |
| Actions | Extends knee |
| Identifiers | |
| Latin | musculus vastus medialis or musculus vastus internus |
| TA98 | A04.7.02.023 |
| TA2 | 2620 |
| FMA | 22432 |
| Anatomical terms of muscle | |
The vastus medialis (vastus internus or teardrop muscle) is an extensor muscle located medially in the thigh that extends the knee. The vastus medialis is part of the quadriceps muscle group.