# What are the quadriceps called?

The front thigh muscles is called the quadriceps femoris. Gray's Anatomy (1918) describes it as a group of four muscles on the front of the thigh: rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius.

## What it means

- A group of four muscles on the front of the thigh: rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius.
- Their tendons unite into a single tendon that surrounds the patella.
- The main straighteners of the knee.

## Action steps

1. Fill the front and sides of the thigh.
2. Arise from the hip bone and the shaft of the femur.
3. Insert through the patellar ligament into the tibia.

## Sources

- [Gray's Anatomy of the Human Body (1918)](https://www.bartleby.com/107/)

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