Legs
In biology, a leg is the part of an animal's body (most commonly in one of the even numbers of 2, 4, 6 or 8, and many more in millipedes) that separates the body from the ground and is used for locomotion.
In an extended sense, a leg is any part of an object that supports it off the ground. An example is the legs of a table or a chair.
Strictly speaking, in human anatomy, the leg only includes everything between the knee and the foot, and is a part of the lower limb.
Bones of the human leg (from hip joint to ankle joint):
Muscles of the human leg:
Muscles of the thigh
- Anterior compartment of the thigh
- *Quadriceps femoris, which is composed of:
- **Vastus lateralis
- **Vastus medialis
- **Vastus intermedius
- **Rectus femoris
- *Sartorius
- *Adductor longus
- *Adductor brevis
- *Adductor magnus
- *Gracilic
- *Pectineus
- *Gluteus maximus
- *Tensor fascia lata
- Posterior compartment of the thigh
- *Biceps femoris
- *Semimembranosus
- *Semitendinosus
Muscles of the calf
- *Popliteus
- The anterior compartment
- *Tibialis anterior
- *Extensor digitorum longus
- *Extensor hallicus longus
- *Peroneus tertius
- The posterior compartment
- *Gastrocnemius (attached to the calcaneus by Achilles' tendon)
- *Plantaris
- *Soleus
- The lateral compartment
- *Peroneus longus
- *Peronius brevis
- The deep posterior compartment
- *Tibialis posterior
- *Flexor digitorum longus
- *Flexor hallicus longus
Vasculature of the leg
The arteries
- Common femoral artery
- Deep femoral artery
- Superficial femoral artery
- Popliteal artery
- Anterior tibial artery
- Posterior tibial artery
- Peroneal artery
- Arcuate artery
The veins
- Greater saphenous vein
- Lesser saphenous vein
- Femoral vein
- Popliteal vein
- Anterior tibial vein
- Posterior tibial vein
- Peroneal vein
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