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sem·i·mem·bra·no·sus (mus·cle)

deep hamstring muscle of posterior (flexor) compartment of thigh; origin, tuberosity of ischium; insertion, medial condyle of tibia and by membrane to tibial collateral ligament of knee joint, popliteal fascia, and via its reflected tendon of insertion (oblique popiteal ligament) lateral condyle of femur; action, flexes knee and rotates leg medially when knee is flexed; and contributes to the stability of extended knee by making capsule of knee joint tense; nerve supply, tibial.
Synonym(s): musculus semimembranosus [TA]
References in periodicals archive ?
As the exposure is continued around the proximal tibia, the semimembranosus insertion is released.
The results showed that the adductor magnus, the semimembranosus, and the long and short heads of the biceps femoris were the most frequently involved muscles across the three phenotypes, while the gracilis and sartorius were less involved.
The fat extraction for determination of the fatty acids profile in the Semimembranosus muscle was performed according to methodology by Folch et al.
Twelve muscles (tibialis anterior, soleus, medial gastrocnemius, lateral gastrocnemius, rectus femoris, vastus lateralis, vastus medialis, semimembranosus, biceps femoris long head, adductor magnus, iliacus, and gluteus maximus) on the right leg of each subject were recorded, with symmetry being assumed for the other leg.
Previous studies [15, 19] compared the EMG activation pattern (onset time and magnitude) of hamstring and semimembranosus during different walking conditions.
Their study considered hip flexor muscles and it was found that during cycling at a 100 watt work rate, there was a significant increase in muscle activity of the tibialis anterior, gastrocnemius medialis, rectus femoris, biceps femoris, semimembranosus, and tensor fascia latae (Hug et al., 2013) when cycling with IC.
In order to study the optical properties or spectra of different tissues, two commercial meat cuts, namely, rump (Gluteous medius) and steak (Semitendinosus and Semimembranosus), were analyzed with and without the presence of the skin.
Caption: FIGURE 1: Dissection of right posterior thigh and popliteal fossa to show tensor fasciae suralis muscle (TFS: tensor fasciae suralis muscle; TN: tibial nerve; Gmh: gastrocnemius muscle, medial head; Glh: gastrocnemius muscle, lateral head; AM: adductor magnus muscle; SM: semimembranosus muscle; ST: semitendinosus muscle; BFlh: biceps femoris muscle, long head; BFsh: biceps femoris muscle, short head; VL: vastus lateralis muscle; ITB: iliotibial band).
After chilling (24 h at +4[degrees]C) from carcasses were isolated the loin (longissimus dorsi) and the total hind legs muscles (semitendinosus, semimembranosus, gracilis and adductor, gluteobiceps, biceps femoris, quadriceps femoris, vastus lateralis, vastus intermedius, rectus femoris, and tensor fasciae latae).
Hip abductors Gluteus medius Gluteus minimus Tensor fascia latae Hip adductors Adductor brevis Adductor longus Adductor magnus Gracilis Hip flexors Ileopsoas Rectus femoris Sartorius Hip extensors Bicep femoris long head Gluteus maximus Semimembranosus Semitendinosus Knee extensors Rectus femoris Vastus Intermedius Vastus lateralis Vastus medialis Knee flexors Biceps femoris long head Biceps femoris short head Semimembranosus Semitendinosus TABLE 3: Moment arm range (minimum-maximum) across a physiological range of motion for each of the studied muscle bundles in the model and corresponding published values.
The biceps femoris, semitendinosus, and semimembranosus muscles were carefully dissected to reveal the sciatic nerve and its branches.
Both cases presented with unilateral pyomyositis involving the thigh and semimembranosus muscles, respectively, and occurred in immunocompetent patients [2, 3].