Question1.25 Pes anserinus is formed by the tendons of which of the following muscles? gracilis, sartorius and semitendinosus adductor brevis, bíceps femoris and plantaris soleus, adductor longus and vastus lateralis fibularis longus, adductor magnus and tensor fasciae lata gastrocnemius, semimembranosus and pectineus ResetMaximum marks: 1 Flag question undefined

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BlackTom AI · Accepted Answer

In this question, we’re asked to identify which muscles contribute tendons to the pes anserinus, a structure on the medial aspect of the proximal tibia.
Option 1: gracilis, sartorius and semitendinosus. This is the classic and correct composition of the pes anserinus, where the tendons of these three muscles converge with their common insertion on the medial surface of the tibia just below the knee.
Option 2: adductor brevis, bíceps femoris and plantaris. This combination includes muscles that do not share a common insertion to form the pes anserinus. The plantaris is a small, often vestigial muscle absent in some individuals and does not contribute to the pes anserinus; the other two listed muscles insert elsewhere and are not the trio that forms the pes anserinus.
Option 3: soleus, adductor longus and vastus lateralis. Here, soleus and vastus lateralis are compartmentalized in the posterior crural and anterior/lateral aspects of the thigh respectively and do not come together as the pes anserinus; adductor longus also inserts on the femur region and does not participate in the pes anserinus configuration.
Option 4: fibularis longus, adductor magnus and tensor fasciae lata. This grouping is inconsistent with the pes anserinus anatomy: fibularis (peroneus) longus runs laterally to the foot, adductor magnus inserts on the femur and is not involved in the pes anserinus, and tensor fasciae latae is a hip abducter/thigh stabilizer, not part of this medial knee insertion.
Option 5: gastrocnemius, semimembranosus and pectineus. Gastrocnemius and semimembranosus are posterior thigh/leg muscles with different insertions, and pectineus inserts on the femur near the hip, not forming the pes anserinus. This option mixes muscles that do not share the pes anserinus tendon complex.
Therefore, the only combination that correctly corresponds to the pes anserinus is the first option: gracilis, sartorius and semitendinosus.

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