Quadriceps Anatomy: Origin, Insertion, Innervation & Action

⭐ Quadriceps Muscle Anatomy ⭐
The quadriceps muscle consists of four muscles: rectus femoris, vastus lateralis, vastus medialis, and vastus intermedius. Dive into the anatomy of each muscle below and watch the full video for an in-depth explanation.
💪 Origins & Insertions:
✔️ Rectus Femoris:
🔴 Origin (Direct head): Anterior inferior iliac spine
🔴 Origin (Indirect head): Acetabular ridge
🔵 Insertion: Tibial tuberosity via patellar ligament & quadriceps tendon
✔️ Vastus Lateralis:
🔴 Origin: Greater trochanter, intertrochanteric line, linea aspera, gluteal tuberosity, lateral intermuscular septum
🔵 Insertion: Lateral aspect of the patella & tibial tuberosity (via patellar ligament & quadriceps tendon)
✔️ Vastus Medialis:
🔴 Origin: Intertrochanteric line, spiral line (pectineal line), linea aspera, medial supracondylar line, adductor longus muscle, adductor magnus muscle, & medial intermuscular septum
🔵 Insertion: Medial border of patella, & tibial tuberosity (via patellar ligament & quadriceps tendon)
✔️ Vastus Intermedius:
🔴 Origin: Anterior and lateral surface of the femur & lateral intermuscular septum
🔵 Insertion: Tibial tuberosity via patellar ligament & quadriceps tendon
💪 Actions:
🌠 All muscles: Extends the knee joint and stabilises the knee joint
🌠 Rectus Femoris: Flexes the hip joint
💪 Nerve:
🌠 All muscles: Femoral nerve (L2, L3, L4)
💪 Artery:
🌠 All muscles: Femoral artery
Chapters:
0:00 - Overview of the quadriceps muscles
1:25 - Rectus femoris origins
2:17 - Vastus lateralis origins
4:39 - Vastus medialis origins
6:44 - Vastus intermedius origins
7:17 - Quadriceps insertions
7:55 - Quadriceps innervation
8:24 - Quadriceps actions
⭐ Want to learn more about the quadriceps? Then check out the full article on the Bodyworks Prime website:
bodyworksprime.com/quadriceps/
⭐ Need help memorizing the quadriceps anatomy? Check out these free flashcards:
🎴 Rectus Femoris Flashcards: bodyworksprime.com/rectus-fem...
🎴 Vastus Lateralis Flashcards: bodyworksprime.com/vastus-lat...
🎴 Vastus Medialis Flashcards: bodyworksprime.com/vastus-med...
🎴 Vastus Intermedius Flashcards: bodyworksprime.com/vastus-int...
#BodyworksPrime #Anatomy #Quadriceps

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