HB-025 · Muscular · Part
Thigh muscles
Also called: thigh muscles Musculi femoris
3D anatomy data Classes 6-8 · Classes 9-10 · Classes 11-12 Beginner Draft - educator review
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Parts: quadriceps; sartorius; adductor group; hamstrings
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About
Thigh muscles straighten and bend the knee and move the hip.
- 📍 Where it is
- Front, inner side and back of the thigh.
- 🧱 Structure
- Quadriceps (rectus femoris and three vasti) in front, adductors on the inner side, hamstrings (biceps femoris, semitendinosus, semimembranosus) behind, and sartorius.
- ⚙️ What it does
- Kicking, standing up, climbing, running and keeping the knee stable.
💡 Key facts
- The quadriceps straightens the knee.
- Hamstrings bend the knee.
- Sartorius is the longest muscle in the body.
✗ Stretching makes muscles longer permanently overnight
✓ Flexibility improves slowly with regular practice.
📒 Words to know
- quadriceps
- four-headed front thigh muscle
- hamstrings
- back thigh muscles
- adductor
- muscle pulling towards the midline
🏫 Related lessons
- Human body, senses and hygiene Classes 1-5
- Fitness components Classes 6-8
- Anatomy, physiology and biomechanics Classes 11-12
- Sports training and fitness testing Classes 11-12
Generic GayaGnan topic lessons. Check your own board's syllabus for the exact chapter.
🔎 Sources and credits
Catalog description: Anterior, medial and posterior compartments.
- OpenStax Anatomy and Physiology 2e, ch. 10-11 (muscle tissue, muscular system) (accessed 2026-10-30)
- 3D models: BodyParts3D (DBCLS) and the Human Reference Atlas (HuBMAP), CC BY 4.0, with GayaGnan schematics. 3D model credits
For learning only. This site does not give medical advice, diagnosis or treatment, and it does not collect any health data.