Limbs
BI2333-1Pectoral R
BI2333-2A
BI2333 3Brachial Plexus and Anterior A
BI2333-3-Cubital Fossa and Anterior F
BI2333-4Palm of the
BI2333-5Posterior arm and
BI2333-6-Dorsum of the hand and posterior
BI2333-7Shoulder and elbow
BI2333-8Osteology of the lower limb and gluteal
BI2333-9...
i. Biceps femoris
Largest and strongest of the 3 muscles and consists of 2 parts, the long head and the short head. Only
muscle out of the 3 that can perform a little bit of external rotation of the knee joint
Origin: L – ischial tuberosity and the caudal part of the sacrotuberous ligament, S – linea aspera (rough
line on dorsal side of femur) and lateral supracondylar line of the femur
Insertion: both unite at the popliteal fossa and insert at the head of the fibula
Function: L – extension and stabilisation of
the hip joint, L+S – flexion of the knee joint
Innervation: L- tibial nerve, S – common
(peroneal) fibular nerve, Sciatic nerve splits
to become the tibial and peroneal nerves.
ii. Semimembranosus
Origin: Ischial tuberosity
Insertion: Medial condyle of the tibia
Function: Extension of the thigh at the hip
joint and flexion of the knee joint, internal
rotation of the knee joint
Innervation: Tibial nerve
iii. Semitendinosus
Origin: Ischial tuberosity and sacrotuberous ligament
Insertion: medial aspect of the tibia on the superficial pes anserinus (found next to the tibial tuberosity)
Function: Extension of the thigh at the hip joint, internal rotation of the knee joint and flexion of the
knee joint
Innervation: Tibial nerve
Pes anserinus – (goose foot) anatomical name given to conjoined tendons at the medial aspect of the knee.
Insertion point of 3 muscles, semitendinosus, musculus gracilis and musculus sartorius.
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